Cherokee is Misfiring and "hiccuping" - Page 2 - JeepForum.com

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post #16 of 20 Old 05-04-2013, 04:47 PM Thread Starter
cavalier
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So, if I do a compression test and get readings between 120 and 150, then do you guys reckon getting the head rebuilt without touching the block/pistons/rings, despite the high mileage?

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post #17 of 20 Old 05-04-2013, 04:52 PM
79chiefs
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Did you do dry, or wet compression test?

99WJ Laredo I6-A 2wd
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post #18 of 20 Old 05-04-2013, 05:00 PM Thread Starter
cavalier
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Quote:
Originally Posted by 79chiefs View Post
Did you do dry, or wet compression test?
Dry comp test, but I didn't pull all the plugs. Is that necessary? Or can I just pull one at a time?
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post #19 of 20 Old 05-04-2013, 05:21 PM
79chiefs
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Pull all plugs then do it so if pressure moves from one to another you have better readings, the wet test will tell you if you will have to touch anything other than the head.

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88XJ-Building on a budget.
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post #20 of 20 Old 05-04-2013, 05:50 PM
tjwalker
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Quote:
Originally Posted by cavalier View Post
I'm not sure it needs to be that high. I think 31 psi is the spec.
You're correct. Fuel pressure spec varies with different years on the XJ.

For your 92, 31 psi is the spec at idle.

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Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
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