oil in intakerunners
#1
oil in intakerunners
I have a 1996 with a 396cui Golen engine.My truble is wery sooty sparkplugs on nr 5,7,8.When i pulled off my intakmanifold it was a lot og oil in the intakrunners.I have deleted egr and pvc on the manifold so no oil comes in here.When i connect my hp tuner i can see the pcm is adding 25% fuel. What can this problem be.
Morten
NORWAY
Morten
NORWAY
#2
Melting Slicks
Member Since: Feb 2009
Location: Oklahoma City OK
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St. Jude '10
I'm not a pro but I was reading a post with a similar problem where a blown intake gasket was discovered allowing oil to come in via the lifter valley. It seems to me it was on a 383 engine and may have been ported heads/intake leaving thinner gaskets. I can't remember the post or I would send a link. I think they talked about a way to test for the leak also. That may be something to look into but I wouldn't go taking anything apart just yet.
#3
Team Owner
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St. Jude Donor '05
You need some kind of pcv system on the car do you have them on the valve covers at least?
#4
Melting Slicks
I had the same symptoms from a bad intake gasket. The gasket was deformed around the intake port on #7 alloying oil to be ingested from the lifter galley. It also caused a vacuum leak that was read by the O2 sensor as a lean condition.