Question about Chevrolet 1992 Chevrolet Blazer S10/jimmy S15 Radio

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Why am i getting bad feul pressur?

92 chevy s10 blazer 4.3 vortec not getting good fuel pressur replaced feul pump feul pump relay and pig tail its not leaking feul anywhere could it be a bad computer also replaced distributer and i know it is out of timenot sure if that would mess with the feul pressur

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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SOURCE: 1991 chevy s10 blazer

Check the fuse under the dash. Did you replace the inline fuel filter? If not, you could loosen the line going into the filter then turn the key to the on position. The pump should run for about 2 seconds then the relay should kick off. Turn off the key for approx. 5 seconds then cycle key back on and the pump should cycle again. If you get a 2 second burst of fuel each time then the pump is cycling. Install a new fuel filter and check the grounded wire by the tank. Hope this helps. :)

Posted on Nov 03, 2008

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GM Elec
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SOURCE: 92 Chevy Suburban Electrical Fuel System

I assume the fuel pump fuse is good?
The only time voltage will be sent to the fuel pump will be the first 2 to 3 seconds if the starter is not engaged. You will want to crank the engine over and check for voltage on the load side of the relay, circuit #30 at the relay.
Let me know after you check.
Regards,

Posted on Feb 23, 2009

  • 116 Answers

SOURCE: 1999 chevy blazer wont start

THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Posted on Apr 11, 2009

  • 139 Answers

SOURCE: fuel pump pressure specs

The fuel pump specs are 14 psi. and 20 gallons an hour.

Posted on Sep 08, 2009

  • 541 Answers

SOURCE: My 4.3 vortec engine in my s10 blazer won't start

try the ignition module. if it is bad it does not send the signal for the the throttle body injectors to spray feul.

Posted on Oct 23, 2009

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I have a 92 chevy blazer 4.3 vortec eng. central port injection not tbi it has no injector pulse do you think its the cam sensor?


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1999 chevy blazer wont start


THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Apr 11, 2009 | 1999 Chevrolet Blazer

1 Answer

My 94 blazer wont start


I have the same problem with my 95 blazer I have heard that it is the fuel pressure regulator. That is the next part I will be replaceing.

Good luck to all.

If any one finds any thing out please let me know!

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