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1988 cherokee 4.0 engine noise

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Old 12-14-2014, 06:06 PM
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Default 1988 cherokee 4.0 engine noise

I have a1988 Cherokee with a new jasper engine so I was told by the previous owner still has the tags on it it makes a knocking sound when cranking and right after it starts then goes away after rev it up I am thinking flex plate
Old 12-14-2014, 07:06 PM
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Originally Posted by mrjeep88
I have a1988 Cherokee with a new jasper engine so I was told by the previous owner still has the tags on it it makes a knocking sound when cranking and right after it starts then goes away after rev it up I am thinking flex plate
Worth a check.

What brand of oil filter are you using now?
Old 12-14-2014, 11:34 PM
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Knocking while cranking aint' the filter!
Old 12-14-2014, 11:57 PM
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Originally Posted by DFlintstone
Knocking while cranking aint' the filter!
If it's a dry start, it might be.
Old 12-15-2014, 06:46 AM
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Originally Posted by DFlintstone
Knocking while cranking aint' the filter!
"and right after it starts"
Old 12-15-2014, 03:28 PM
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I haven't changed the oil in it yet it was just changed before I bought it but it has a wix filter on it I only gave 400 for the jeep
Old 12-15-2014, 04:10 PM
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Great start.
Old 12-15-2014, 04:21 PM
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Plenty of money left over to fix that knocking "Jasper" engine.
Old 12-15-2014, 04:23 PM
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Originally Posted by Firestorm500
Plenty of money left over to fix that knocking "Jasper" engine.
I'd be looking for some screw-up from the installation.
Old 12-15-2014, 04:50 PM
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Yeah the Cherokee is a common vehicle around here everyone has one or has had one I bought it and hadn't heard it run before it had a bad fuel pump and they said it had some lifter noise but that is no lifter and it has been sitting about 3 years
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