oil leak?
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Senior User
Joined: Jul 2006
Posts: 202
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From: Hamburg PA
oil leak?
has anyone else had a problem with oil seeping out from under the valve covers when pulling a load or a long grade? does its sound like the gasket is junk or are the bolts just coming loose? they look to be 12-point bolts to me but does any1 know the size off-hand?thx
Posting Guru
Joined: Sep 2007
Posts: 2,207
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From: Las vegas
Have you serviced your CDR lately? it sounds like you are getting excesive presure in your crank case maybe cdr maybe blow by. It could be loose bolts or a bad gasket too. Its only when pulling a load?
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Senior User
Joined: Jul 2006
Posts: 202
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From: Hamburg PA
CDR i havent touched yet.. and its mostly when loaded or pulling a hill at higher speeds you can smell it burning on the exhaust manifolds
Lead Driver
Joined: Nov 2003
Posts: 6,900
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From: Campbell River, B.C.
Valve cover bolts were 1/2" on mine, U joint comes in handy for the rear bolts near the firewall.
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Senior User
Joined: Nov 2007
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From: McFarland, WI
I had this problem on my 87 6.9L after a long hard off road trip. Turned out that my CDR valve was all gummed up and full. This caused alot of pressure and my gasket blew out. I got a new set of gaskets and soaked my CDR Valve in gas.Havent had the problem since and ive ran it pretty hard since. Probably worth it to clean the valve out anyways
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Senior User
Joined: Apr 2006
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From: Everywhere, USA
The Vaule cover bolts on my 7.3L are 6 pt. definately not 12 pt. I think the 12 pt. bolts are on the manifold.....Still don't understand why engineers like 12 pt. bolts, but I am just a dumb *** electrician.