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2000 XJ 4.0L Engine Knock

Old 02-26-2019, 11:10 PM
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Default 2000 XJ 4.0L Engine Knock

So when I start up the ol girl there is an engine knock, almost sounds like a rod knock but when the engine warms up it goes away. I've been searching for the culprit but came up empty handed. Any and all "2-cents" would be appreciated.
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Old 02-28-2019, 11:03 AM
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Originally Posted by Skeeter354 View Post
So when I start up the ol girl there is an engine knock, almost sounds like a rod knock but when the engine warms up it goes away. I've been searching for the culprit but came up empty handed. Any and all "2-cents" would be appreciated.
I've never really heard of knocking going away once warmed up. How loud is this "knock'?
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Old 03-01-2019, 06:50 AM
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Probably a stuck lifter.

try this. Next time it does it, shut the engine off and wait 10 seconds. start it back up. What happens? "Knock" gone?

What brand oil filter are you using?
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Old 03-07-2019, 12:11 PM
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Just put new oil in and filter on both are Mobile 1 high milage 10w 30. I'll have to see if letting her run, shut er off, and fire her back up to see if it stops.
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Old 03-12-2019, 11:33 AM
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Originally Posted by Skeeter354 View Post
Just put new oil in and filter on both are Mobile 1 high mileage 10W 30. I'll have to see if letting her run, shut er off, and fire her back up to see if it stops.
Any luck?
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