I need help with my 1990 k5 blazer 5.7 350 it's will start up run ruff and have to pump the gas when idling then about 4 mins later it starts to idle higher and higher then dies

Asked by olblue1991k5 Jan 30, 2016 at 07:13 AM about the 1990 Chevrolet Blazer Silverado 2-Door 4WD

Question type: Maintenance & Repair

I need help with my 1990 k5 blazer 5.7 350 it's will
start up run ruff and have to pump the gas when
idling then about 4 mins later it starts to idle higher
and higher then dies so I try and start it back up
but it won't run its getting gas and spark I don't
have anything to test the pressure on anything but
I got a new fuel filter and plugs, plug wires ,cap
,rotor Im thinking it might be the knock sensor or
egr

GuruTLGP2 answered 5 years ago

Checked every vacuum line no leaks replace fuel pump it had no pressure on the fuel rail still has no pressure on the fuel rail. And it has no fire

Mark helpful

Your Answer:

I need help with my 1990 k5 blazer 5.7 350 it's will start up run ruff and have to pump the gas when idling then about 4 mins later it starts to idle higher and higher then dies 1 Answer

I need help with my 1990 k5 blazer 5.7 350 it's will start up run ruff and have to pump the gas when idling then about 4 mins later it starts to idle higher and higher then dies so I try and start ...

1990 Chevrolet Blazer Silverado 2-Door 4WD

-

Maintenance & Repair
i a 93 k5 blazer 5.7tbi in cold weather it will not start, if i hook jumper cables up it will start but runs very rough until it warms up, then it will not idle on its own and dies at every stop. 10 Answers

i a 93 k5 blazer 5.7tbi in cold weather it will not start, if i hook jumper cables up it will start but runs very rough until it warms up, then it will not idle on its own and dies at every stop. if t...

1993 Chevrolet Blazer Silverado 2-Door 4WD

-

Maintenance & Repair
Hey Gurus, I need your help. My 95 blazer cranks but doesn't start unless I spray carb cleaner into it then it will start and run fine all day. Next day I will have to spray it again in order to start it. Any tips would be appriceated. It has a 4.3 vortex auto and 4wheel drive. Thanks for your help. 2 Answers

Cranks but no start unless I spray carb cleaner into it.

1995 Chevrolet Blazer LS 2-Door 4WD

-

Maintenance & Repair
2000 Blazer will idle but if it is given gas it dies if you can finally get it to move it will keep running till it shifts gears or goes up a hill and it loses speed then eventually dies. 2 Answers

It was hooked to a computer and he said to change fuel pump was lacking a little fuel pressure. I did and it didn't fix the blazer. So I hooked it up to a bigger size computer at a different shop...

2000 Chevrolet Blazer LT 4-Door 4WD

-

Maintenance & Repair
My 2002 Chevy Blazer is not starting, Sounds like it is fuel starved. Just filled the tank and got home fine next day it doesnt start. It turns over for a second and then wont stay on on. if i keep trying it sounds more like it isnt getting fuel. I am thinking since I let the tank get low to check m,y milage I may have picked up some gunk in the tank and cloged the line somewhere. Any suggestions on how to go about diagnosing and fixing this? 5 Answers

My 2002 Chevy Blazer is not starting, Sounds like it is fuel starved. Just filled the tank and got home fine next day it doesn't start. It turns over for a second and then wont stay on on. if i keep...

2002 Chevrolet Blazer LS 4-Door RWD

-

Maintenance & Repair

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.