Quote:
Originally Posted by Jamesp
Bank 1 and Bank 2 too lean
Installed a new AOS during the rebuild as there was oil in the intake tubes
Took the oil filler cap off at idle and there was a little vacuum in the crankcase. 2 fingers and little effort maybe three or four ounces of force to get the cap off, as it was definitely getting pulled by a vacuum when it was removed and installed.
I searched this forum and believe I am looking for a fairly substantial vacuum leak.
Anyone have experience with this?
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The codes are for overly lean conditions on both banks, which would be indicative of an intake air leak in the main intake area (throttle body, plenum connector hoses, etc.) as it affects both sides of the engine.
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