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1998 Mazda Protege knocking

Tiny
JOEYP512
  • MEMBER
  • 1998 MAZDA PROTEGE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 149,000 MILES
My car has a knocking and a friend told me its cause a piston at one point didnt have any compression so he told me to use lucas to see if it would remove the knocking. What do you guys thing it is?
Tuesday, September 21st, 2010 AT 2:58 PM

1 Reply

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Lucas isn't going to fix your engine knock. If you have too low of compression you won't get a knock you will get a dead hole meaning that cylinder won't run. You would have to figure out which cylinder was knocking and find out if it was a spun rod bearing or what was causing it and fix it.
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Tuesday, September 21st, 2010 AT 3:07 PM

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