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kavik 01-07-2012 03:53 PM

Video of my engine noise- thoughts?
I'm worried it may be a lifter or something.

Semper Fi!

2005JGC 01-07-2012 10:36 PM

Re: Video of my engine noise- thoughts?
Its REALLY hard to tell but there really sounds to be some bottom end knocking to that, the 4l is a VERY noisy motor and it can run forever with horrible piston slap and noisy lifters, but there is a low knocking that sounds to be about the right speed for a connecting rod, I could be wrong, been wrong before... and that said worn bearings can be your low oil pressure concern.

FlyinRyan 01-07-2012 10:53 PM

Re: Video of my engine noise- thoughts?
The 4.0s had a problem with cracked exhaust manifolds and IIRC the 96+ blocks have a problem with piston slap/wrist pins. Many end up grenading

kavik 01-08-2012 08:18 AM

Piston slap / rods...that's my concern. I know they added 5w30, I'm gonna drain it out and put in 10w 40, see if that helps. I think worn bearings may very well be playing a part in this.

How do i check for exhaust leaks?

Semper Fi!

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