1997 GMC Jimmy Vapor lock

Tiny
PETE5678
  • MEMBER
  • 1997 GMC JIMMY
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 138,500 MILES
When weather is 80+, car seems to vapor lock
Saturday, June 28th, 2008 AT 5:07 PM

1 Reply

Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
Check the fuel pressure and flow rate. Also check for residual pressure. If you have good pressure but low flow the pump is going bad. If you have good pressure and flow but the residual pressure drops fast test the pressure regulator for proper operation. If the filter hasn't been changed in a while change it as well.
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Wednesday, July 16th, 2008 AT 10:27 PM

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