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Engine rattle/knocking noise

Tiny
JOHN JIMENEZ
  • MEMBER
  • 2006 PONTIAC G6
  • 3.9L
  • AUTOMATIC
  • 18,000 MILES
TThe car was working fine then out of nowhere it started to smoke as if was overheating. I turned the car off and when I turned it back on there was a rattling or knocking noise.
Thursday, December 28th, 2017 AT 8:26 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Sounds as if the engine has failed with a main or big end bearing running dry, check oil level and oil pressure with a mechanical gauge, but often when the knock starts the damage has been done, you may be up for a replacement engine, but do the checks first just to be sure what you are facing.
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Saturday, December 30th, 2017 AT 4:39 AM

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