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1996 Mazda 626 Engine Knock

Tiny
HARLE11
  • MEMBER
  • 1996 MAZDA 626
  • 4 CYL
  • FWD
  • MANUAL
  • 170,000 MILES
I have an engine knock on a 96 Mazda 626 4 cyl 170k mi. Can't afford another car or engine right now. Any ideas? Thanks

Tried:
- If I pull the lead from the no. 1 cylinder, knock goes away.
- Changed oil, spark plugs, leads to spark plugs
- Tried Lucas oil additive
- Precision Auto diagnostics: said noise from lower engine bearings
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Saturday, July 10th, 2010 AT 12:27 PM

1 Reply

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
Could try replacing rod bearings on #1 piston. Need to drop oil pan


https://www.2carpros.com/forum/automotive_pictures/198357_Graphic_511.jpg

. Remove rod cap ueswood or plastic like chop stick probe top bearing out replace coat new bearings with Lithium grease. This is only a try no way to know if it will work depends on how scored crank journal.
Hope this helps
Thanks for donate
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Saturday, July 10th, 2010 AT 1:38 PM

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