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2001 Chevy Blazer Fuel Injector Problem

Tiny
GEORGE A.
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 90 MILES
I have 2001 Chevy Blazer. It won't start.
When I pour gas into the intake manifold, then it starts.
I changed the fuel pump and fuel filter, but it is the same.
I checked the relay and fuses and they are OK.
What should I do next?
Thanks for your help.
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Friday, September 23rd, 2011 AT 2:33 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
What is the fuel pressure reading?
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Friday, September 23rd, 2011 AT 2:49 PM
Tiny
GEORGE A.
  • MEMBER
  • 2 POSTS
Fuel pressure is about 60 62 psi for few seconds when the fuel pump is running. When fuel pump stops, it drops down to 52 54 psi right away. Please let me know what you think, thanks.
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Monday, September 26th, 2011 AT 10:10 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
You are losing pressure somewhere and you need to find out where. It could be the check valve in the fuel pump, the injectors or the regulator. You can isolate which it is by pinching off the lines at specific points ant watching what the effect is on the rest pressure drop off.
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Monday, September 26th, 2011 AT 10:14 PM

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