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Rod Knock I think.

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Old 11-02-2015, 09:38 PM
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Default Rod Knock I think.

4.0 when I first start her she is quite for about 20 seconds. Then it starts knocking like a Diesel engine. Then after it warms up a bit the knock is barely noticeable. 351,000 on my Cherokee. Any suggestions or advice?
Old 11-02-2015, 10:00 PM
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What year and which oil filter are you using?
Old 11-02-2015, 10:13 PM
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Gotta be an 88, Eh? Also, where are you?
Old 11-03-2015, 05:49 AM
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Originally Posted by cruiser54
What year and which oil filter are you using?
OEM mopar MO-090
2001
Old 11-03-2015, 05:55 AM
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Originally Posted by DFlintstone
Gotta be an 88, Eh? Also, where are you?
2001 Nashville TN
Old 11-03-2015, 07:18 AM
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Rod knock doesn't go away.

Automatic?
Old 11-03-2015, 07:18 AM
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Originally Posted by DFlintstone
Gotta be an 88, Eh? Also, where are you?
88?
Old 11-03-2015, 07:28 AM
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Originally Posted by cruiser54
Rod knock doesn't go away.

Automatic?
Yes
Old 11-03-2015, 07:45 AM
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Originally Posted by Jtgregel
Yes
Check this out:

https://www.cherokeeforum.com/f51/ho...ocking-125547/
Old 11-03-2015, 08:39 AM
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What's your oil pressure look like when this is happening?
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