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Old 04-30-2011, 09:11 PM   #1
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Lifter Noise

I have an 88 Wrangler that I bought a couple of months ago. Put 3,000 miles on it and changed the oil. Put pennzoil 10-30 with a fram filter. It has started making a lot of lifter noise that it was not making before the oil change. The noise is pretty much all the time when not in the gas or at least I can't hear it when I'm in the gas.

I'm thinking the Jeep spent some time (probably 5-10 years) sitting before the guy I bought it from resurrected it. It has good oil pressure and runs fine.

Thinking maybe the fresh oil loosened some crude up that has now gummed up the lifters. Has anyone had any luck running a flush thru the engine? or should I just swap out the camshaft and lifters? Seen lots of post on here saying that the jeeps are noisy on the top and and don't want to get into the engine only to have a new cam and lifters make the same noise.

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Old 05-03-2011, 03:22 PM   #2
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Try an engine flush or sea foam. Mine rattles And knocks too.
Noisy bugger

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Old 05-03-2011, 03:47 PM   #3
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Try putting a quart of ATF in the oil
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Old 05-03-2011, 04:41 PM   #4
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Mobile 1 works good for my jeep. Everybody's jeep is different though. The jeep engine is known to be a noisy engine. Both my jeeps rattled and ticked.
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Old 05-03-2011, 05:57 PM   #5
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Pull the valve cover off and make sure all rockers are getting oil to the top before considering cam and lifters. Pull off a couple of the rockers and check for wear etc.....Another thought.. The PO could have also slipped in some STP or similar stuff to quiet the lifters
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Old 05-04-2011, 11:10 PM   #6
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The thinner the oil the more you will hear the valve train noise even more so in a vehicle with lots of miles. If it ran quiet before the change and you have good pressure then don't worry about it. On your next change try running 10w-40 and that will probably quiet it down. If you had the noise before some mystery oil or a quart of ATF added to the oil for a few hundred miles before you change it again would clean it up and free a sticking lifter. The 10-40 is ok to run in it especially in the warm summer months.

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