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Unread 09-28-2009, 06:25 PM   #1
trueprimitive
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1992 YJ Wrangler 
 
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Blown head gasket? again!

I just put a new head gasket on my 4.2 about a month ago and it has run just fine until I was out ridin the other day and stopped, took the oil cap off and what do you know white residue all over the inside of the cap! I drove it home and parked it. Do you guys think the head gasket could just need to be retorqued?

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Unread 09-28-2009, 06:47 PM   #2
CjinPA
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Did you have the head checked to see if its warped?


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Unread 09-28-2009, 06:51 PM   #3
Coiz
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Some of that can occur from condensation and does not automatically mean the head gasket is shot. Crack the oil filter loose and collect the oil in a clean tub to see what it really looks like. The last time it went out what happened, was there oil in the coolant, coolant in the oil or both? Could be residual signs from the first time it happened.
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Unread 09-28-2009, 07:20 PM   #4
KMD
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Quote:
Originally Posted by Coiz View Post
Some of that can occur from condensation and does not automatically mean the head gasket is shot. Crack the oil filter loose and collect the oil in a clean tub to see what it really looks like. The last time it went out what happened, was there oil in the coolant, coolant in the oil or both? Could be residual signs from the first time it happened.
+1 solid advice. Does it taste sweet like coolant?
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Unread 09-28-2009, 09:10 PM   #5
trueprimitive
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There was coolant in the oil the first time the gasket went, and no I didnt have the head checked to see if it was warped.
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Unread 09-28-2009, 11:30 PM   #6
Coiz
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There was probably a lot of residual moisture in the crankcase and block from the first failure. You're likely seeing that condensing on the cap. Like I said, crack the oil filter or drain it all into a clean bucket. If it looks like chocolate milk, you're in trouble. If it looks clean, put it back in and run it. Might not be a bad idea to shorten the interval for the first oil change after the head gasket replacement. Extended full temperature engine runs are the best thing to help burn that off. Short trips typically compound it.
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