1997 GMC Jimmy Vapor lock

1997 GMC JIMMY
138,500 MILES • 4 CYL • AWD • AUTOMATIC
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PETE5678
  • MEMBER
  • 1 POST
when weather is 80+, car seems to vapor lock
Jun 28, 2008 at 5:07 PM
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SWILLIAMS
  • CAR REPAIR CONTRIBUTOR
  • 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.
Jul 16, 2008 at 10:27 PM
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