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1987 GMC Safari engine knocking

Tiny
JFS065
  • MEMBER
  • 1987 GMC SAFARI
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
My van makes a loud knock from the drivers side when first started. After driving for 10miles it quieten down to a very light tap otherwise it runs fine. Can you help I ask this once before
Monday, February 25th, 2008 AT 5:20 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
It could be either a bad wrist pin or connecting rod bearing, drive till it dies. Requires a rebuild anyway.
Keep in mind this is a diagnosis made with your description, any mechanic can tell you what it is, if this is the right diagnosis.
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Monday, February 25th, 2008 AT 6:20 AM

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