Noise in the valve cover
10-05-2016, 04:19 AM
#1
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Location: Pasquotank, NC
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Year: 1990
Model: Cherokee
Engine: 4.0
Noise in the valve cover
Sounds like lifter noise from the back of the engine in the valve cover area when the engine is warmed up. Not sure how to diagnose a lifter, will dig into this deeper. If it is a lifter, replace them all on the stock cam? I've read that some 4.0s have lifter bores large enough to pull lifters w/o pulling head. All the bad luck I've had on this thing, maybe I'm due for some good luck. Also, would it be worth swapping in a new, more performance oriented cam at the same time? Not looking for a lumpy idle, just a minor improvement if I have to swap it anyways. 1990 4.0l daily driver status. I have another vehicle if this one needs to be laid up for a week or so for repairs.
10-05-2016, 08:29 AM
#2
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
FYI, only on the 2.46 four cylinder could you remove and replace the lifters without removing the head.
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