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Discussion Starter #1
When you first start the car, it doesnt matter what time of day ( rainy, damp, etc) it will blow out a SOME white smoke out the muffler. Also it will let out some water - it does NOT look like aint-freeze. Just water.


But here is the thing, if you let it idle for around 10 minutes, it will go away - the white smoke, water, everything. Is this a sign of a bad head gasket - or maybe the head was milled inncorrectly? We got the head rebuilt by professionals and a new head gaket... what could be the problem? We torqued the 10 head bolts to spec too
 

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How many miles are on the new head? Generally right after a rebuild a motor/head will smoke some due to the assembly grease. Have you changed the oil since the rebuild?

Also how much water is coming out of the exhaust? A little bit is normal due to condensation that forms when the exhaust cools down from the previous drive.
 

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Discussion Starter #3

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Well condensation/moister in the exhaust system will cause white smoke... in the mornings and at night depending on the weather conditions and how long the car has been sitting... this is normal. Once the car is warmed up and all the water/condensation is out of the exhaust system then the smoke is gone... also normal.

If the smoke continues after the fact the car is warmed up... then the recondition/rebuilt head either has some bad valve stem seals or the valve guides were not set/sitting correctly. Most people in my area who have sent their head to a head exchange to get rebuilt or got a recondition one has smoked since they put it on the car. Most head exchange places don't know how to build a DSM head correctly.
 

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What does it smell like? Does it smell like oil or does it just smell normal? Did you use ARP grease on everything or something similar? This grease allows for an accurate torquing of the studs or bolts, whichever you have.
 

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Discussion Starter #6
It smells just like a regular car exaust... we did use ARP greese on the head bolts but how would that make it smoke?
 

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Its not that hard to figure out what is wrong with your car... Time for a new HEADGASKET. White Smoke out exhaust, bad coolant = blown headgasket... Does your car seem slower?, do a compression test on all 4 cylinders.
 

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I have 3K on my new head gasket and its already leaking.
Just because its new doesn't mean you did it right.
Luckily mines a pin leak and it might use a cup of water in a month.
It doesn't show up in compression tests but you can smell burnt water in the exhaust after I pound on it. :rolleyes:
 

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WhiteFwdsm said:
Well condensation/moister in the exhaust system will cause white smoke... in the mornings and at night depending on the weather conditions and how long the car has been sitting... this is normal. Once the car is warmed up and all the water/condensation is out of the exhaust system then the smoke is gone... also normal.

If the smoke continues after the fact the car is warmed up... then the recondition/rebuilt head either has some bad valve stem seals or the valve guides were not set/sitting correctly. Most people in my area who have sent their head to a head exchange to get rebuilt or got a recondition one has smoked since they put it on the car. Most head exchange places don't know how to build a DSM head correctly.

i agree. water from the tailpipe is completely normal. what is the temperature outside? its possible its only moisture turning into steam from the exhaust temp being warmer than the exhaust pipe. when the pipe warms up, the smoke is gone.
 
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