Low compression one cylinder? - JeepForum.com

 
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post #1 of 2 Old 07-26-2002, 05:45 AM Thread Starter
jaybyrd
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Location: Ottawa, Canada
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Low compression one cylinder?

Bad exhaust lobe on camshaft???????????
90 psi on 1st cylinder of I6 4.0L, all the rest are 120 psi.
Haynes says no more than 30 psi variance and it runs well, just looking for ideas into the root cause.

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post #2 of 2 Old 08-15-2002, 06:50 PM
94gclimited
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If you haven't yet try some Restore. I have used this stuff in my Jeep with 120k and it made a difference in power. I've heard of people who had a couple cylinders with so bad of compression the engine wouldn't stay running and a can of this stuff fixed it. For about 7 bucks its worth a try.
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