92 xj rear main seal
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From: archbald pa
Year: 1992
Model: Cherokee
Engine: 4.0 ho
Originally Posted by DFlintstone
^^^OK..."Huston, we have a problem".....^^^
I'm not seeing that 1/2 inch vent working right with brake line. Maybe I missed something? You want a good 3/8"+ (ID)("interior diameter") line to the air cleaner, that is not kinked. (from the FRONT of the valve cover). I'm not sure how importand the rear CCV line to the vacuum on the manifold is at 200K. It's a metered "vacuum leak" from the intake manifold to the crankcase, via the rear of the valve cover. Maybe a new engine at idle might use that for circulation? Anyway mine, (and yours), needs a good sized vent from that front hole. 1/2 inch into the air cleaner is fine.
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From: archbald pa
Year: 1992
Model: Cherokee
Engine: 4.0 ho
Its breathing just fine there for the 5th time are no leakes other than the rms itwas leaking thats why it was changed i must have torn it although your addvise was good and helped a bit its not the problem
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Joined: Aug 2011
Posts: 10,489
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From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
OK, yea good point on the groove. I just wanted to point out there is allot of lateral thrust on the main bearings, and a crank can move a bit and make it harder to seal. With 200K that's not unrealistic.
The CCV valve has a little 2.4mm, (or 2.6) orifice, and a small tube to the intake manifold. The other vent needs to be a large tube, free and unrestricted to the air cleaner. If the air cleaner gets gunky, then there are options. (that don't involve restricting it)
Glad you got her handled....
The CCV valve has a little 2.4mm, (or 2.6) orifice, and a small tube to the intake manifold. The other vent needs to be a large tube, free and unrestricted to the air cleaner. If the air cleaner gets gunky, then there are options. (that don't involve restricting it)
Glad you got her handled....
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