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Engine Tick
Hello Everyone, first post.
1991 Jeep Cherokee 4.0 HO 4x4 Briarwood 200000 miles
Ticking coming from valve cover, around #1 sparkplug.
Tried to isolate by pulling spark plugs, one at a time, while running. I heard this can tell you if this is hydraulic lifter or oil pressure issue. No difference in ticking noted. Getting strange readings from oil guage (up and down). Absolutely no tick when first started cold, ticking starts after 2 minutes and gets worse until sounding loud.
I did change oil (no difference noted)
My guess is oil pump. Could someone help diagnose please? Before I spend $350 on oil pump replacement, or spend a dirty day under my Jeep
Thanks!
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