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tons of white smoke after head gasket job

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Old 08-29-2010, 08:58 PM
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Default tons of white smoke after head gasket job

...this is on my 96 3.8 camaro... I had to tear down my motor to the heads recently. I dropped something in an intake port while working on the lower intake manifold. After replacing the head gaskets and getting everything back together I started it up and I got a ton of white smoke. Is it possible that somehow it is just burning off excess coolant somewhere, or did my heads not seal and I'm screwed?

Should I run it more to see if it burns off, or should I take it to the shop? I'm not going back down to the head gaskets again.

Is there some way I can puessure test the coolant system?

no, i didnt mill the heads.

Used new bolts... correct torque sequence... car runs fine, just smokes like crazy.

also... didnt smoke at first... took about a min
Old 08-30-2010, 03:59 PM
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you can buy coolant systm pressure test kit at any parts store
Old 08-30-2010, 06:34 PM
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Did you use thread sealer for those head bolts? I don't know if it matters or not, maybe someone else can confirm if that could be the issue.
Old 08-31-2010, 07:44 PM
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I grabbed a coolant pressure tester and a compression tester. I'll try them out when I have some time.

I didn't use thread sealer on the head bolts. It didnt call for that anywhere in the haynes manual....
Old 08-31-2010, 07:45 PM
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Did you check your oil to see if it looks like chocolate milk?
Old 08-31-2010, 08:21 PM
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If it has cats and coolant got into the exhaust, that will cause a lot of white smoke. It happened when I repaired my brother-in-laws 3.8 taurus. I was freaked out at first, but took it for a drive and ran it hard for about 5 miles. By the time I got home, there was no more white smoke. He has put another 100k on it since I repaired it.

He blew both head gaskets from overheating. I had the heads decked and the valves checked.
Old 08-31-2010, 11:55 PM
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i suppose its possible some coolant spilled down into the pipes when we removed the heads... or who knows when. I thought I had bags over the exhaust pipes to keep who knows what out of them, but I could be mistaken. Its probably worth it to try running it longer.

I havent run a compression test on it as of yet, but i did hook up a coolant system pressure tester, and the pressure held solid at 15 psi. Could be a good sign.

So far the oil looks fine... all I've checked is the dipstick though. I also only ran it for about 2 minutes. I suppose thats enough time for the oil to turn all dairy queen on me?
Old 09-01-2010, 07:54 PM
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it lives again - no more smoke!

http://www.youtube.com/watch?v=bWGvs5Xxz_o



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