Mechanics

ENGINE KNOCK

1996 Mazda 626

Engine Mechanical problem
1996 Mazda 626 4 cyl Front Wheel Drive Manual 170000 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
Avatar
Harle11
July 10, 2010.



Hi
Could try replacing rod bearings on #1 piston. Need to drop oil pan


http://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

Docfixit
Jul 10, 2010.