Runs a few miles then acts like it is running out of gas

Tiny
RONALD JONES
  • MEMBER
  • 1989 CHEVROLET 2500
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
I have the truck listed above K2500 4×4 3/4 ton truck converted it to quadrajet 4 barrel carburetor new and street fire distributor which is new was running great but now goes 3 or 4 miles and acts like it's running out of gas. Sits a few minutes and cranks back up then does it again. Is it vapor locking?
Friday, February 7th, 2020 AT 1:46 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

It could be. The fuel pump on the side of the motor should deliver about 7 pounds of pressure to the carburetor. If it does not, then the fuel could boil and this is the result.

Roy
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Friday, February 7th, 2020 AT 5:19 AM

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