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Knocking noise

Tiny
BARRON ALLIEN PEGGY
  • MEMBER
  • 2003 FORD WINDSTAR
  • 168,000 MILES
All these have been put into still knocking. We have put new push rods, crank shaft bearings, rod bearings, oil pump, timing chain, gears and lifters. Still making this sound.
Sunday, May 13th, 2018 AT 5:38 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

The other thing it could be is a broken piston. You can tell by removing a spark plug wire one by one and see if the knock either goes away or goes down in intensity.

Also, a cracked flywheel will also cause a noise. It breaks from a failed main bearing. Since you replaced them, I would still check then anyway.

Roy

https://www.2carpros.com/articles/engine-noises
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Monday, May 14th, 2018 AT 1:40 PM

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