Question about 1996 Jeep Grand Cherokee
Check and verify that you have good oil pressure...good is 30psi or above at idle hot. Then,If after checking the rocker arm assembly you find no wear and all rockers travel about the same distance with no variations when cranking the engine (otherwise you may need a cam or lifter)
You can try using marvel oil added to the crankcase, then follow up with lucas additive about a week later. (remove the filter and drain it if there isn't enough room...you don't want to over fill it my more than a pint.) If that does not work then likely a lifter has internal wear and needs to be replaced.
If when you checked pressure it was low then likely you have worn crankshaft bearings. Aside from replacement there is no cure for that.
Posted on Oct 14, 2010
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Posted on Jan 02, 2017
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