Loud knock from engine, believe upper end

Ed Owner Gillette, Wyoming Posted   Latest   Edited  
Question
Driveability
2005 Chrysler Pacifica 3.5L 4-spd
Knocking Noise From Engine

Vehicle was brought in with a loud knocking noise. Sounded like probable upper end noise. Removed the valve covers and found a failed rocker arm on the rear bank. Replaced the rocker arm and now it has a loud knocking that will come and go. Sounds like a lifter but scared to rev engine to try to prime the lifter. Anybody had similar experience with these engines?

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Rusty Owner/Technician
Oakham, Massachusetts
Rusty Default
 

I'd want to make sure the base oil pressure is adequate first and then check supply to the valve train

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Michael Mobile Technician
Clinton, Utah
Michael Default
 

Hi Ed, Long time no see. Could you provide a sound file or video with the noise? Thank you, -Mike

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