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2000 chevy blazer cranks but sometimes start
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Luisbigpoppy
User
Oct 18, 2008, 12:49 PM
Post #1 of 11
(3485 views)
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2000 chevy blazer cranks but sometimes start
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good spark, good fuel pressure sometimes it starts others it wont. when it wont start i spray carb clean or gas in throttle will run as long as i continue to spray if spray stops engine will cut off. when it does start it will run at good speed unless i punch the gas. i really have to ease the throttle. no engine codes given. im lost. need experianced advice. thank you. Luis former ASE. former long time.
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Double J
Veteran
/ Moderator
Oct 18, 2008, 1:10 PM
Post #2 of 11
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Re: 2000 chevy blazer cranks but sometimes start
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Check the connector back at the fuel pump module itself.These are known for corrosion/connection problems and the replacement pumps come with a new wiring connector to repair it with.
Sound to me like a faulty pump and wiring connector.
Thats where i'd start looking
Jim
(This post was edited by JIM N on Oct 18, 2008, 1:18 PM)
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Guest
Anonymous Poster
Oct 18, 2008, 2:23 PM
Post #3 of 11
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Re: 2000 chevy blazer cranks but sometimes start
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what is the fuel pressure supposed to be ?
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Jeff Norfolk
Enthusiast
Oct 18, 2008, 6:06 PM
Post #4 of 11
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Re: 2000 chevy blazer cranks but sometimes start
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50 - 62 psi. It will run on much less, 35 or so , but not very well. I agree with Jim the fuel pump sounds suspect. Very common on these trucks. So common I know the fuel pressure requirments without looking it up
Jeff
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Luisbigpoppy
User
Oct 18, 2008, 6:52 PM
Post #5 of 11
(3463 views)
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Re: 2000 chevy blazer cranks but sometimes start
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thanks for advice fuel pressure is at 35-40
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Jeff Norfolk
Enthusiast
Oct 18, 2008, 7:23 PM
Post #6 of 11
(3461 views)
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Re: 2000 chevy blazer cranks but sometimes start
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You are welcome. Us here at CarJunky aim to please!
Jeff
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Double J
Veteran
/ Moderator
Oct 20, 2008, 10:20 AM
Post #7 of 11
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Re: 2000 chevy blazer cranks but sometimes start
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Hey Jeff,
They told you when you joined that We "Aim to please" here at Carjunky?
Way2Old told me he was " Pleased to take aim" when i joined!
(This post was edited by JIM N on Oct 20, 2008, 10:25 AM)
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way2old
Veteran
/ Moderator
Oct 20, 2008, 3:08 PM
Post #8 of 11
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Re: 2000 chevy blazer cranks but sometimes start
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Be careful Jim. I am practicing.  My apologies to the original poster. This may be a slight hi-jacking.
Click here Jim or anyone else.
Being way2old is why I need help from younger minds
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 20, 2008, 8:11 PM
Post #9 of 11
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Re: 2000 chevy blazer cranks but sometimes start
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Kitty is watching as usual........
T
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Guest
Anonymous Poster
Oct 21, 2008, 12:49 PM
Post #10 of 11
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Re: 2000 chevy blazer cranks but sometimes start
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checked connecters all looked good. readings at connecters within specs.fuel pressure specs were supposed to be within 70-90. replaced fuel pump, runs great. thanks again.
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Luisbigpoppy
User
Oct 22, 2008, 1:12 PM
Post #11 of 11
(3393 views)
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Re: 2000 chevy blazer cranks but sometimes start
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my statement above forgot to log-in
(This post was edited by Luisbigpoppy on Oct 22, 2008, 1:14 PM)
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