Bad Intake Manifold Gasket White Smoke

I did a valve job on a friends boat. Upon closer inspection (and letting the car run, giving it some gas while in park), I noticed that there seemed to be a leak from the exhaust manifold gasket. i gave it a few mins and looked if there was anything that i could see was wrong and i dint see anything so i tryed starting it, it stumbled a lil and started up and ran fine. fine for a little while. Intake gasket is the first part to check when you have white smoke from exhaust Inside the vehicle, there is a gasket that seals the manifold to the head. The intake manifold gasket can wear down and experience leaks or gaps in the seal. I guess I am going to look at taking the intake manifold off and replacing the gaskets at my earliest opportunity. I have a mild 350 that doesn't seem to have any major mechanical problems, but its apparently way out of tune because it produces excessive white smoke out of the exhaust and the smoke kinda makes your eyes sting. Once the engine warms up to 104 degrees, it quits smoking from the tail pipe as well as when I go down the road. Smoke from engine or exhaust Inspection Service You can learn a lot about the health and well being of your car from the color of its exhaust. Could it be from the coolant that was already in the combustion chamber from before I replaced them?. Also if it was blown head gasket you would know. If the idle changes, the carb cleaner is getting pulled past the intake gaskets. A Lot of Auto's sense manifold vacuum, Nissans in particular can blow massive amounts of WHITE smoke when the vacuum diaphram ruptures thus allowing transmission fluid to suck back into inlet manifold. If you see smoke just few seconds after acceleration these are valve seals. The final, most noticeable symptom is a big cloud of smoke pouring from the exhaust, and the engine gauge showing maximum temperature after a few minutes. same problem i had. So fit new: - Spark Plugs - Air Filter - Fuel Filter - Oil Filter - Exhaust Gaskets - Intake Gaskets - Stripped and cleaned entire engine down to chambers (but not gone to pistons) - New Valve Stem Seals - Valve clearances all checked - Reground Valve Seats. The second time you did the intake gasket, did you put the gasket sealer on top of the intake gasket as shown in that diagram a few posts up? I would think that a blown head gasket would show a zero psi on two adjacent cylinders. Could it be from the coolant that was already in the combustion chamber from before I replaced them?. A Lot of Auto's sense manifold vacuum, Nissans in particular can blow massive amounts of WHITE smoke when the vacuum diaphram ruptures thus allowing transmission fluid to suck back into inlet manifold. You'll be doing the intake manifold gasket in the process, but your symptoms are almost surely HG or bad head. Now that I see the intake manifold gasket is bad I really hope this is the problem and I can put her back together again from here. Bad PCV Valve Symptoms and How to Test the PCV Valve Yourself I just got a new starter and intake manifold gasket repaired. Sent heads out to machine shop. My current thought is bad intake manifold gasket leak, and being as the fuel injectors connect with/through the lower intake, fuel in one or more cylinders. It crisped from running too hot. Any coolant leaks should be addressed as soon as possible to prevent the possibility of serious engine damage occurring due to a bad intake manifold gasket. when restarted white smoke apeared, see no leaks around head but some steam and alittle coolant leak around turbo/exaust manifold mount, and on coolant lines into turbo. There's a test that a shop can do to see if combustion gases are mixed with the coolant. The only externally visible sign of a blown head gasket would be coolant externally leaking from the head gasket. Plumes of white smoke, not the head gasket. Be careful, coolant leaking into the cylinder is what bent my rod. I don't think your head gasket is blown since if it was it would pretty much run like crap and the oil would look like crap haha. Intake Manifold Gasket Leak Symptoms. The intake manifold gasket can wear down and experience leaks or gaps in the seal. If your problem is thick white smoke coming out the exhaust pipe, most likely you have a blown intake manifold gasket. If the intake manifold gaskets leak coolant into the intake manifold the engine may overheat as a result, without any visible external leaks. These sections take the role of distribution in the combustion mixture, onward with the coolant to the separated intake port. Is it possible to get white smoke from the exhaust from an intake manifold leak on this vehicle? Would there be any difference in smoke symptoms between an intake manifold and head gasket leak?. Yes there is a problem and my guess is the intake or exhaust gasket took a powder white smoke is water vapor in the combustion chamber getting this fixed asap is a really good idea leaving it sit will cause rust and corrosion problems that will destroy expensive steel parts with rust in a big fat hurry. My 1995 Pontiac Firebird Trans Am is burning coolant in the engine and it is coming out the exhaust. Watch this. Common symptoms of a bad gasket are; white smoke is emitted from the exhaust pipe, bubbles in the radiator, overheating of the engine, milky white oil and significant loss of coolant without visible leaks. I took the intake manifold to my machine shop and they milled the intake to create more preload on the gasket at the bottom of the port than at the top. This is the most effective blown head gasket test and can give you a positive sign of a blown head gasket. Head gasket failures are often the result of engine overheating (which may have occurred because of a coolant leak elsewhere in the cooling system, a bad thermostat, or an electric cooling fan not working). If engines have aluminum cylinder heads on them, you can expect to have corrosion near the ports of the coolant. One of the recognizable symptoms of bad intake manifold gasket is coolant leaks. Same for the intake mainfold/gasket. There may still be a very small amount of coolant loss over this period of time, but if so, very little. New water pump last week because the pump was leaking coolant, but now I find the car is still leaking coolant, and some has gotten into the oil. These parts take the role of distribution the combustion mixture, along with the coolant to the separated intake port. would point towards an intake gasket leak. The second problem is that the plastic lower manifold gaskets (between the intake manifold and the heads) will disintegrate slowly over time. The spark plugs are NOT wet and there is white smoking coming from valve covers (next to intake manifold). 3) Thermostat went BAD and is stuck closed and the coolant could not circulate. My first thought is, "blown head gasket," but the car runs smooth as silk while in gear and driving. New radiator cap, changed thermostat, no fix. bluish white smoke from tailpipe - '06 4. same problem i had. I had the dealership replace the manifold gasket the first time at about 40,000 miles before it got to. The coolant leaking from below the exhaust flag can also be a red flag, and bubbles may form in the radiator or cooler overflow tank. And yes, the 4. turned into a gallon of coolant a week. This problem is a nightmare to me. I think, hmm that's weird. Brief video of how to diagose a blown headgasket or intake gasket. I haven't done a compression test on it yet. If the idle changes, the carb cleaner is getting pulled past the intake gaskets. If you had a cracked block you would have the coolant in the motor oil. Then do the compression test. A damaged head gasket or cracked engine block leak coolant. Still running, I'm definitely finding in research that a leaking intake manifold gasket can cause combustion gases to enter the cooling system and cause white smoke, the symptoms are almost identical to a head gasket leak. The other source of white smoke is ATF. Any coolant leaks should be addressed as soon as possible to prevent the possibility of serious engine damage occurring due to a bad intake manifold gasket. Troubleshooting an Intake Manifold Gasket. 8 mustang cause white smoke out tail pipe n water in oil. How does a new valve cover stop engine oil from entering the intake. The intake gasket provides a seal between the intake manifold and the cylinder head in a car's engine. Many are ambiguous and can represent different problems. After about 30 miles at highway speed, I will get smoke coming from engine compartment and into cabin and a bad smell I can't positively identify. I have a mild 350 that doesn't seem to have any major mechanical problems, but its apparently way out of tune because it produces excessive white smoke out of the exhaust and the smoke kinda makes your eyes sting. most of the time with a blown head gasket u will have oil and water mixed in the pan, and milky substance under the oil cap, along with excessive coolant system pressure which could rupture the radiator , however with lower intake seals leaking on 96-99 chevy 5. Head gasket(s)/cracked head(s). The most common symptoms a blown head gasket are: Your 3. White smoke out of intake is bad. If its green, its antifreeze. If I am just driving on the highway no smoke. Intake gasket is the first part to check when you have white smoke from exhaust Inside the vehicle, there is a gasket that seals the manifold to the head. Condensation well mostly disappear. These parts take the role of distribution the combustion mixture, along with the coolant to the separated intake port. Now, introduce a blown head gasket (allowing air in from the intake manifold; also the source of the white smoke, when cooling sytem pressure forces coolant into the intake manifold), and you have. I will tomorrow as soon as I put new oil in there and have the bad one all out. These sections take the role of distribution in the combustion mixture, onward with the coolant to the separated intake port. So I change the upper and lower intake manifold gaskets and now the smoke still white but smell like something got burned. White smoke when startup - White smoke coming out of the exhaust engine can signal a serious problem with the vehicle except the 2-stroke engine. After about 30 miles at highway speed, I will get smoke coming from engine compartment and into cabin and a bad smell I can't positively identify. Valve job and head gasket were done maybe 20k miles ago, probably 8 years, just before I bought it. Head gasket(s)/cracked head(s). Based on your description, it doesn’t seem like you have any of the tell-tale signs, so it would be difficult to say that it’s head gasket related. To check it, drain the oil and look for signs of contamination by the coolant. Vacuum leaks can be found with a smoke machine, soap + water or with a flammable spray. It could have a blown head gasket or a cracked head, no oil and water mixing, but water is going into the cylinders and burning to create the white smoke? Any auto parts store has a kit/tool for sale. Oil on dipstick is slightly milky. An easy do-it-yourself test for a blown head gasket is to perform a chemical test using this type of tester on your coolant to check for the presence of exhaust gases to see if this is happening in your car. If your problem is thick white smoke coming out the exhaust pipe, most likely you have a blown intake manifold gasket. Not burning oil from manifold and not coolant leak smell. most of the time with a blown head gasket u will have oil and water mixed in the pan, and milky substance under the oil cap, along with excessive coolant system pressure which could rupture the radiator , however with lower intake seals leaking on 96-99 chevy 5. If the valve seals look good I would change the intake gasket and take special care to ensure a good seal. If you buy aftermarket, it's a tossup. However, the white smoke persists it could mean that the coolant is leaking to the combustion chambers. If you want to go further into Bad head gasket diagnosing, check out our other article here: Bad Head Gasket Symptoms. If its green, its antifreeze. I guess I am going to look at taking the intake manifold off and replacing the gaskets at my earliest opportunity. A leaking intake manifold gasket can cause white smoke from the exhaust, if the engine has coolant flowing through the intake manifold. This is an expensive repair, but I have a trick. Sue, I'm not sure about your engine size, but the 3. 8 vortec Sounds like the intake gasket is bad. I am currently blowing white smoke out of the tail pipe on start up. Inside the upper intake manifold there is a wet brownish black layer of something. It would over heat a lot of smoke and run like crap. 454 mercruiser engine. Before I go any further I wanted to know if anyone could tell if it is the intake manifold or a blown head gasket. lose of coolant/white smoke from exhaust/ cant be - Automotive | DSLReports Forums, broadband news, information and community Your description is that of a blown head gasket. There's a test that a shop can do to see if combustion gases are mixed with the coolant. Usually a vac leak at the manifold gasket will affect only one cylinder and the engine will idle poorly. If the noise you hear is a fast tap or clatter near the top of the engine, it could be valve noise which would require you to have some - 1999-2005 Pontiac Grand Am. Re: Bad oil leak under intake manifold I was thinking valve guides and seals. Clean and inspect the sealing surfaces VERY closely for pitting deep enough to cause a problem (thanks early Dex-cool). never had white crud on my glow plugs but i never pull them lol, but when i did, and i did have a head gasket failure. Started having overheating issues. White smoke coming out of tailpipe? Blownhead gasket is what you might have. 2000 taurus can a bad intake gasket cause white smoke from tail pipe? changed head gaskets but broke intake manifold bolt can this cause the smoke or is the head bad Follow. Oil on dipstick is slightly milky. Based on your description, it doesn’t seem like you have any of the tell-tale signs, so it would be difficult to say that it’s head gasket related. I was hoping it was coolant burning off the engine from me filling and bleeding it, until I saw the puddle under the intake manifold was back. My current thought is bad intake manifold gasket leak, and being as the fuel injectors connect with/through the lower intake, fuel in one or more cylinders. Traced it to the vaccum pipe between the servo and the intake manifold sucking brake fluid from the servo/leaking brake master cylinder. and every other gasket/seal I could with the motor on a stand. A head gasket leaking coolant into a cylinder can foul the spark plug and create a lot of white smoke out the exhaust. Technician B is wrong because a bad head gasket would cause coolant to leak into one or more cylinders, resulting in white exhaust smoke. i replaced my stock intake(due to pos plastic leaking coolant)1998 mustang gt with the dorman intake manifold i saw now white smoke out of the. If you have white smoke coming out of the exhaust then there is water entering the combustion chamber. I think, hmm that's weird. Many times white smoke can begin after the engine has been overheated. 8L GM car or mini-van is overheating. Smell the smoke. You'll be doing the intake manifold gasket in the process, but your symptoms are almost surely HG or bad head. There may still be a very small amount of coolant loss over this period of time, but if so, very little. if it is for sure coming from the intake manifold: i said the gasket because even if something was smoking, it should not escape from under your intake manifoldthat should be sealed tight (where smoke cant come out). The most common symptoms a blown head gasket are: Your 3. and no, nothing is definate yet. first it was #2 misfire. (1) Water condensation from a blown and leaking head gasket: This gasket is the seal between the cylinder head and engine block. Cold/slightly warm air blowing from the heater and dirty/oily coolant would point toward a head gasket issue. 7 Vortec, you will normally have an external engine oil/coolant leak, and or mysterious coolant loss with no external leak, which. The reason it's not a blown head gasket is because head gaskets holds in pressure, therefore when a head gasket lets go, it releases pressure into the engine or causes coolant to leak into the oil passages. Once that was completed, we re-assembled the intake manifold with those same Print-O-Seal intake gaskets and a new set of spark plugs and the engine immediately stopped using oil. This is for a 4 cyl Nissan Frontier 2. Usually a vac leak at the manifold gasket will affect only one cylinder and the engine will idle poorly. I guess I am going to look at taking the intake manifold off and replacing the gaskets at my earliest opportunity. If your problem is thick white smoke coming out the exhaust pipe, most likely you have a blown intake manifold gasket. It was smoking really bad, white smoke, it was clearly burning antifreeze. These were also revised not too long ago to use higher temperature rubber around the coolant ports, making them more resistant to failure as well. If you buy aftermarket, it's a tossup. Valve job and head gasket were done maybe 20k miles ago, probably 8 years, just before I bought it. A bad head gasket could cause coolant in combustion - and/or could cause exhaust in the coolant system. Its white smoke coming from around the 02 sensor area and i wouldnt think there should be any reason a 02 sensor should be making it smoke. There are several ways to tell that you have a bad intake manifold gasket. At worst, white smoke may indicate an internal engine coolant leak, usually due to a blown head gasket, a bad intake manifold seal, or a cracked block or heads. I’ve been working on my 199 buick lesabre custom 3800 w/ 160K for a while now. This is the most effective blown head gasket test and can give you a positive sign of a blown head gasket. If it was oil it would be a blueish color. Head gasket(s)/cracked head(s). oil clean , pressure test cooling system shows internal leak looking at truck for a buddy evidence of slight intake leak at lf area ( common ) more diagnostics i guess, been a long time since i seen bad head gaskets on these engines. The gasket could be broken down by exposure to heat or chemicals like coolant that have direct contact with the manifold. The smell may sometimes be accompanied by faint smoke. Other possible causes of blue exhaust smoke include: piston wear, worn valve seals, a dirty or non-functioning PCV valve, worn piston rings, an intake manifold gasket leak, worn engine oil seals and possibly even head gasket. White smoke accompanied by a sweet smell signals that oil is leaking to the cylinders. [email protected]! Definitely burning coolant. A month or so prior I did the upper intake plenum gasket and throttle body gasket. I don't think a bad intake manifold gasket would cause it, but a bad or blown head gasket certainly would. If I'm not mistaken, this causes coolant to enter the intake manifold and either burn off or hydrolock the engine (depending on how bad the leak is). 4L van (or car, pick up, SUV) is overheating. I don't think your head gasket is blown since if it was it would pretty much run like crap and the oil would look like crap haha. This article will describe the steps involved in replacing your E46 intake manifold gasket. Now that I see the intake manifold gasket is bad I really hope this is the problem and I can put her back together again from here. 0 ohv motor is notorious for having warped heads, cracked heads or bad head gasket issues. If your problem is thick white smoke coming out the exhaust pipe, most likely you have a blown intake manifold gasket. White smoke is blowing out of the exhaust manifold and a little from the rocker cover. My 1995 Pontiac Firebird Trans Am is burning coolant in the engine and it is coming out the exhaust. or even a lower injector oring. When this happens, the engine gets overheated due to the leakage of coolant, gas, and air. This mixing results in contamination of engine oil are ultimately resulting in white exhaust smoke with some sweet odor smell. A smoke machine can pressurize the intake manifold and put smoke or vapor into the system. White smoke coming from the exhaust could indicate that a head gasket has blown or there is a cracked cylinder head. Upper intake gaskets: If you buy the GM upper intake manifold, these will be included in the box. tons of white smoke after head gasket job I had to tear down my motor to the heads recently. Car has 73000 miles only. Generally, when this seals were damaged, then the coolant will flow out over the seal. I had the dealership replace the manifold gasket the first time at about 40,000 miles before it got to. 8L GM car or mini-van is overheating. Oil on dipstick is slightly milky. bluish white smoke from tailpipe - '06 4. Sent heads out to machine shop. Usually the intake manifold doesn't fail, it's the gasket that goes bad. These were also revised not too long ago to use higher temperature rubber around the coolant ports, making them more resistant to failure as well. New radiator cap, changed thermostat, no fix. If you accelerate and blue smoke continues until RPM is high all the time these are rings. The OEM routing moves water from that port to a metal tube that is welded to a 2nd tube that flows crankcase air to the intake tube. If the idle changes, the carb cleaner is getting pulled past the intake gaskets. If you want to go further into Bad head gasket diagnosing, check out our other article here: Bad Head Gasket Symptoms. I am fairly certain that the intake manifold has no coolant in it. I don't think a bad intake manifold gasket would cause it, but a bad or blown head gasket certainly would. A bad head gasket could cause coolant in combustion - and/or could cause exhaust in the coolant system. The white smoke is the coolant leaking out of the engine and winding up in the oil passages, due to a bad head gasket. Generally, when this seals were damaged, then the coolant will flow out over the seal. If you accelerate and blue smoke continues until RPM is high all the time these are rings. The spark plugs are NOT wet and there is white smoking coming from valve covers (next to intake manifold). Along with not having the smell of gas vapors. fine for a little while. If you have white smoke coming out of the exhaust then there is water entering the combustion chamber. Then white smoke from exhaust and under the hood, no smell this time, and a lot less smoke than last time. If you find oil inside your intake manifold, replace the crankcase breather valve. After completion engines ran fine. [email protected]! Definitely burning coolant. Once the engine warms up to 104 degrees, it quits smoking from the tail pipe as well as when I go down the road. never had white crud on my glow plugs but i never pull them lol, but when i did, and i did have a head gasket failure. Vacuum leaks can be found with a smoke machine, soap + water or with a flammable spray. The intake manifold gasket can wear down and experience leaks or gaps in the seal. After about 30 miles at highway speed, I will get smoke coming from engine compartment and into cabin and a bad smell I can't positively identify. Once that was completed, we re-assembled the intake manifold with those same Print-O-Seal intake gaskets and a new set of spark plugs and the engine immediately stopped using oil. It does not always happen, although the times it did, my car was on a steep incline pointing upward. Most E46 models utilize a runner profile-style gasket for the intake manifold. Discuss How to detect Lower Intake Manifold Gasket Leak ??? in the alt. Then do the compression test. Is a definite sign of running rich. This is the most effective blown head gasket test and can give you a positive sign of a blown head gasket. When it fails it will cause coolant to enter in to the intake manifold and be burned in the combustion chamber causing a loss of coolant and white smoke from the tail pipe. Upon closer inspection (and letting the car run, giving it some gas while in park), I noticed that there seemed to be a leak from the exhaust manifold gasket. You could have a bad intake gasket/timing cover gasket etc. Very strong odor. White smoke out the tailpipe means you're burning up coolant so it's leaking into the combustion chamber. Yes there is a problem and my guess is the intake or exhaust gasket took a powder white smoke is water vapor in the combustion chamber getting this fixed asap is a really good idea leaving it sit will cause rust and corrosion problems that will destroy expensive steel parts with rust in a big fat hurry. A leaking intake manifold gasket can cause white smoke from the exhaust, if the engine has coolant flowing through the intake manifold. So, the intake manifold gasket is the seal that connects the intake manifold to the engine. -Check your intake manifold gasket where your exhaust gas recirc. A head gasket leaking coolant into a cylinder can foul the spark plug and create a lot of white smoke out the exhaust. I did a valve job on a friends boat. Intake manifold gaskets can be made of paper, rubber, metal, and sometimes a combination of the three. It can be a blown head gasket (which is common to have two adjacent cylinders involved, the gasket blows between them). The lower intake manifold gasket is what usually leaks. There may still be a very small amount of coolant loss over this period of time, but if so, very little. If I'm driving through town it tends to start smoke after I have been sitting at a stop light for a couple minutes. Though with the above observations mentioned I was wondering how possible is it for the intake manifold gasket to fail resulting in coolant to enter the combustion. If you see this, then it means the seal will not hold and will be susceptible to leakage. The easiest way to check for a blown head gasket is very simple. If it is down on those two cylinders - it is a blown head gasket. Gaskets are subject to extremely high temperatures and pressures. Traced it to the vaccum pipe between the servo and the intake manifold sucking brake fluid from the servo/leaking brake master cylinder. The pipe your fighting with goes to the water by pass. The Chevy 3. Smell the smoke. A Lot of Auto's sense manifold vacuum, Nissans in particular can blow massive amounts of WHITE smoke when the vacuum diaphram ruptures thus allowing transmission fluid to suck back into inlet manifold. White smoke is blowing out of the exhaust manifold and a little from the rocker cover. If you find oil inside your intake manifold, replace the crankcase breather valve. Well, I just fixed the oil leak out of the rear seal of my intake manifold. Intake manifold gaskets can be made of paper, rubber, metal, and sometimes a combination of the three. 454 mercruiser engine. Cold/slightly warm air blowing from the heater and dirty/oily coolant would point toward a head gasket issue. The lower intake manifold gasket fails and leaks coolant into the engine oil. bluish white smoke from tailpipe - '06 4. Could it be from the coolant that was already in the combustion chamber from before I replaced them?. Probably didn't smoke before because hardly any oil was making It to the top of the head since the gasket was backwards. Re: Bad oil leak under intake manifold I was thinking valve guides and seals. I've seen the gasket burn up there (when oem) and cause a small amount of smoke/exhaust leak under/next to the intake manifold. Title says it, I replaced intake manifold gaskets and head gaskets, still getting huge amounts of white smoke. I don't think a bad intake manifold gasket would cause it, but a bad or blown head gasket certainly would. Yes there is a problem and my guess is the intake or exhaust gasket took a powder white smoke is water vapor in the combustion chamber getting this fixed asap is a really good idea leaving it sit will cause rust and corrosion problems that will destroy expensive steel parts with rust in a big fat hurry. White smoke is coming out of the tail-pipe and it smells like. The intake manifold gasket on some engines can leak, resulting in coolant entering the chamber and burning white. Right? Well my question is could it also be a intake manifold gasket?. If the noise you hear is a fast tap or clatter near the top of the engine, it could be valve noise which would require you to have some - 1999-2005 Pontiac Grand Am. After completion engines ran fine. Any coolant leaks should be addressed as soon as possible to prevent the possibility of serious engine damage occurring due to a bad intake manifold gasket. Edit: I found a shop that will do it (ASE certified) for flat rate labor plus machine shop fee ($60) and I bring the parts. The fix, involving replacement of the upper plastic (composite) intake manifold, gaskets, and peripherals is costly; but much less expensive than replacing the engine, which will have to be done if this repair is not completed. The large amounts of white smoke at startup (similar to a Seafoam treatment) and the rough idle have pretty much been eliminated. According to your posts, it could either be a blown head gasket or a modulator diaphragm. The most common symptoms a blown head gasket are: Your Ford 4. Could be a bad intake manifold gasket seal so that the intake port sucks oil from under the intake past the gasket and into the cylinder. Head gasket(s)/cracked head(s). I dropped something in an intake port while working on the lower intake manifold. Unfortunately, in the event that there is loss in the integrity of the gasket, then there is the possibility that it may no longer prevent the seepage of coolant into the chamber. This costs less than $50AUD plus labour. Based on your description, it doesn’t seem like you have any of the tell-tale signs, so it would be difficult to say that it’s head gasket related. Started having overheating issues. which would cause the pressurized air to be pushing out the little crease making a weird noise. The spark plugs are NOT wet and there is white smoking coming from valve covers (next to intake manifold). The reason it's not a blown head gasket is because head gaskets holds in pressure, therefore when a head gasket lets go, it releases pressure into the engine or causes coolant to leak into the oil passages. I’ve been working on my 199 buick lesabre custom 3800 w/ 160K for a while now. Then do the compression test. If the ratio is not perfect, combustion does not happen easily and it puts more pressure on the engine to work harder. replaced plugs (which were HORRIBLE and need it) and coil packs. A few pieces of information about the car:-Motor swap to JDM 7M-GE last summer-I tore the head off and replaced the head gasket etc. It may leak and allow the coolant to enter the intake port, the crank case, or it can drip down the side of engine on the outside. [This message has been edited by craigsfiero2007 (edited 01-30-2014). Have an '05 Pontiac Aztek with the GM V6. Well, if you are getting white smoke, that tends to say coolant is burning. A good amount of whitish-bluish smoke emits from my exhuast which appears that the motor is burning either oil or coolant although the coolant levels are fine, and the oil appears good also. If I am just driving on the highway no smoke. White smoke is blowing out of the exhaust manifold and a little from the rocker cover. An easy do-it-yourself test for a blown head gasket is to perform a chemical test using this type of tester on your coolant to check for the presence of exhaust gases to see if this is happening in your car. Brief video of how to diagose a blown headgasket or intake gasket. Then white smoke from exhaust and under the hood, no smell this time, and a lot less smoke than last time. The smoke coming out of exhaust pipe are white and smell kinda sweet/gassy because the lower intake manifold gasket was broken and coolant got into intake valve. Yo, so i got the oil changed a few days ago today driving home i notice the low oil light on over and engine shook a little plug was gone got more oil and a plug refilled and in startup white smoke came from the exhaust drives ok I'm at about 25k and got tuned notice now it doesn't kick as much from a stophope it's my imagination, could a gasket have blown?. If I do a compression test should it read >low on >one or two cylinders and would this be conclusive, or with an engine >this >old would it be a waste of time and money? What else could cause >coolant to >get into the engine? Bad intake manifold gasket? > >Thanks. If engines have aluminum cylinder heads on them, you can expect to have corrosion near the ports of the coolant. Any sort of burning smells should be checked out as soon as possible to make sure. Over time the gaskets harden from heat or they swell from oil contamination. There are several ways to tell that you have a bad intake manifold gasket. The gasket could be broken down by exposure to heat or chemicals like coolant that have direct contact with the manifold. If I am sitting at a light it doesn't smoke until I accelerate, then when I take off, enough smoke comes out to smoke out an intersection. Symptoms of a Bad or Failing Exhaust Manifold Gasket. I am currently blowing white smoke out of the tail pipe on start up. Sue, I'm not sure about your engine size, but the 3. The main question remains though - head gasket or not? How likely is it really that it's both?. White smoke out of intake is bad. If you buy aftermarket, it's a tossup. Very strong odor. This can also be caused by a leaking intake manifold gasket. 0 carb mercruiser and everything seems to be running fine except alot of white smoke while im running it in the driveway. A head gasket leaking coolant into a cylinder can foul the spark plug and create a lot of white smoke out the exhaust. The other thing I could see being the issue is the coolant hoses on the manifold. please help, my timming was off alittle and was getting some detnotation, temp went high so i pulled over to cool off. Negative Vehicle Performance A fault in the exhaust manifold can also present as negative performance in the vehicle. These sections take the role of distribution in the combustion mixture, onward with the coolant to the separated intake port. Intake manifold gaskets can be made of paper, rubber, metal, and sometimes a combination of the three. White smoke is definitely "water" or coolant per say. When this happens, the engine gets overheated due to the leakage of coolant, gas, and air. The tell-tale signs of a blown head gasket would be water/coolant getting back into the engine oil and/or white smoke coming from the exhaust pipe. Overheating Engine. A Lot of Auto's sense manifold vacuum, Nissans in particular can blow massive amounts of WHITE smoke when the vacuum diaphram ruptures thus allowing transmission fluid to suck back into inlet manifold. If the valve seals look good I would change the intake gasket and take special care to ensure a good seal. The white smoke is the coolant leaking out of the engine and winding up in the oil passages, due to a bad head gasket. Unfortunately, in the event that there is loss in the integrity of the gasket, then there is the possibility that it may no longer prevent the seepage of coolant into the chamber. same problem i had. 2L Intake Manifold gasket Coolant bypass tube Job gone bad Post by mdm6713 » Mon Mar 09, 2015 5:01 pm So my truck, ran fine before I started this, considering myself a capable mechanic I thought I could complete the job of removing the intake to swap the gaskets at the same time replace the L shaped metal coolant bypass hose that began to. Symptoms of a Bad or Failing Exhaust Manifold Gasket. It's leaking from the right side of the engine, where it would be expected to if it's a bad intake manifold gasket. You'll be doing the intake manifold gasket in the process, but your symptoms are almost surely HG or bad head. Leaks allow the coolant and motor oil to mix together. White smoke usually indicates steam. Several months later one engine started blowing white smoke. Plumes of white smoke, not the head gasket.