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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 (2819 views)
2000 chevy blazer cranks but sometimes start Sign In

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.


Double J
Veteran / Moderator
Double J profile image

Oct 18, 2008, 1:10 PM

Post #2 of 11 (2813 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

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)


Guest
Anonymous Poster

Oct 18, 2008, 2:23 PM

Post #3 of 11 (2811 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

what is the fuel pressure supposed to be ?


Jeff Norfolk
Enthusiast
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Oct 18, 2008, 6:06 PM

Post #4 of 11 (2800 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

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 upWink
Jeff


Luisbigpoppy
User

Oct 18, 2008, 6:52 PM

Post #5 of 11 (2797 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

thanks for advice fuel pressure is at 35-40


Jeff Norfolk
Enthusiast
Jeff Norfolk profile image

Oct 18, 2008, 7:23 PM

Post #6 of 11 (2795 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

You are welcome. Us here at CarJunky aim to please!
Jeff


Double J
Veteran / Moderator
Double J profile image

Oct 20, 2008, 10:20 AM

Post #7 of 11 (2784 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

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)


way2old
Veteran / Moderator
way2old profile image

Oct 20, 2008, 3:08 PM

Post #8 of 11 (2776 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

Be careful Jim. I am practicing.SmileWinkAngelic 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


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 20, 2008, 8:11 PM

Post #9 of 11 (2772 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In


Kitty is watching as usual........

T



Guest
Anonymous Poster

Oct 21, 2008, 12:49 PM

Post #10 of 11 (2759 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

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.


Luisbigpoppy
User

Oct 22, 2008, 1:12 PM

Post #11 of 11 (2727 views)
Re: 2000 chevy blazer cranks but sometimes start Sign In

my statement above forgot to log-in


(This post was edited by Luisbigpoppy on Oct 22, 2008, 1:14 PM)






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