Slow starting

1999 CHEVROLET
12,000 MILES • 5.7L
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MARK805MS
  • MEMBER
  • 1 POST
Turn key starter turns engine over for four seconds slowly comes to life I step on throttle and it feels as though its flooded for a moment. Then all catches up to speed an it runs great. Sometimes I can smell raw gas on start up. Once in a while after the truck has sat over night and has not been fired up that morning. Walking by I smelt raw gas but saw no leakage?
Sep 21, 2016 at 3:27 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,554 POSTS
Hey Mark,

I would check the fuel pressure regulator because is sounds like the diaphragm is blown, here is a guide that will help you.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator


Please let us know what you find so it will help others.

Best, Ken

Sep 25, 2016 at 1:14 PM
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