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2001 Blazer takes 2-3 second to start

Tiny
BRALLEN
  • MEMBER
  • 2001 CHEVROLET BLAZER
92,000 4X4 4.3L
Never any fuel system work besides new fuel filter a few years ago. The following problem started a few weeks ago. My Blazer used to start as soon as the key was turned, now if it sits for any length of time it cranks for 2-3 seconds before starting. I doesn't smoke at all either way. If I turn the key to on and let the fuel pump run until it sounds like it stops, about 3 seconds, then crank, it starts instantly. Any ideas before I start troubleshooting? Thanks.
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Sunday, July 29th, 2007 AT 5:41 PM

3 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Does it run rough when it starts? Could be a weak fuel pump or the pump bleeding down pressure. If it runs rough it could be a blown fuel pressure regulator in the intake plenum
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Monday, July 30th, 2007 AT 11:36 AM
Tiny
BRALLEN
  • MEMBER
  • 2 POSTS
It runs perfect all the time. Gas mileage is the same as it always has been. The pre-described problem is the only thing wrong with it. Thanks for replying.
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Monday, July 30th, 2007 AT 3:37 PM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Have the pump checked with a manual gauge, could be bleeding down causing excessive cranking
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Monday, July 30th, 2007 AT 3:53 PM

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