Oil on top of valve cover
Thread Starter
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Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Oil on top of valve cover
We all get tired of the oil film/leak on top of our 4.0 Jeep aluminum valve covers. Many times the biggest culprit is the loose fitting oil filler cap. Here’s a real easy fix:
Remove the plastic oil filler cap and wrestle the original rubber gasket from it using a small pick or screwdriver.
Make a duplicate of the gasket out of an old bicycle inner tube using scissors and a knife or razor blade.
Install the duplicate on the cap first, and then the original over top of it.
It will be a tight fit on the valve cover the first time, and may require some persuasion with a pair of pliers, but will get easier with time.
Remove the plastic oil filler cap and wrestle the original rubber gasket from it using a small pick or screwdriver.
Make a duplicate of the gasket out of an old bicycle inner tube using scissors and a knife or razor blade.
Install the duplicate on the cap first, and then the original over top of it.
It will be a tight fit on the valve cover the first time, and may require some persuasion with a pair of pliers, but will get easier with time.
Thread Starter
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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