TIcking!!!!!
Thread Starter
Junior Member
Joined: Dec 2009
Posts: 36
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From: Santa Barbara California
Year: 1994
Model: Grand Cherokee
Engine: 5.2L V8
TIcking!!!!!
I have a 1990 Jeep xj Pioneer I6 4.0L, has 159k I get ticking when ever i first start it! and at High RPMs! i think its a lifter prob but i dont know what to do? is there a way to tighten them? or clean out my system without having to take my head apart?
CF Veteran
Joined: Oct 2009
Posts: 2,867
Likes: 16
From: Fauquier County, Virginia
Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
It's an XJ lol. You can try running some Marvel Mystery Oil or Motor Flush through it right before an oil change per the instructions. Might help loose some sticky lifters or clogged oil passages. How loud is the tick?
CF Veteran
Joined: Mar 2009
Posts: 1,208
Likes: 1
From: Watha,NC
Year: Jeepless at the moment
Ticking is factory installed 
. Like stated try some Marvels Mystery Oil, see if it improves any. You can try some lucas oil treatment, Ive seen it help some older vehicles.
. Like stated try some Marvels Mystery Oil, see if it improves any. You can try some lucas oil treatment, Ive seen it help some older vehicles.
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