1990 GMC Safari vapor lock

Tiny
APULLEN
  • MEMBER
  • 1990 GMC SAFARI
  • 291,296 MILES
I can start my van no problem and run it as long as I want but when I turn it off I can not start it back up until I let it cool down. I have been told this is being caised by vapor lock which I don't know what that means and if it is how do o fix this issue. Or what causes should I look for.
Wednesday, June 5th, 2013 AT 9:54 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Vapor lock is the result of the fuel in the fuel lines overheating and causing a blockage in the system. As far as the problem, you need to check to see if you have both spark and fuel to the engine when it doesn't start. One will be missing and then you will know what system to focus on.
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Wednesday, June 5th, 2013 AT 10:08 AM

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