Motor done for good?

1999 PONTIAC GRAND PRIX
160,000 MILES • 6 CYL • 2WD • AUTOMATIC
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TODDH24
  • MEMBER
  • 1 POST
In my 1999 grand prix there is heavy knocking from the engine, appears internal.. possibly in pistons? Also seems to be a little smoke.. seems like the engine wants to cease up. Is the motor done for?
Jan 29, 2011 at 7:59 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
It sounds like a main or rod bearing. If the oil is full, you have oil pressure, and the noise is there, that is what it sounds like. Honestly, the engine is most likely rebuildable, but chances are you would save a lot of money by getting a good used engine that would bolt righ in.
Feb 5, 2011 at 6:29 PM
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