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'94 Chevy Silverado V6 loss of power

Tiny
N2THEFIRE
  • MEMBER
  • 1994 CHEVROLET SILVERADO
Hello - I have a 1994 Chevrolet Silverado, 4.3 V6 with 180,000 miles.

When accelerating, I get a lot of hesitation and if I press the gas too much at this point, it actually pops or "backfires". Also, sometimes when I kill the truck, it "diesels" or "runs on" for a bit before stalling. From time to time it will also die on me. I have changed: PCV valve, plugs, wires, cap/rotor, fuel filter checked for operation. I have been told to change the module under my distributor and the EGR valve. I'm feeling like by the time I find this problem, every changeable part on my truck will be new LOL. Hoping someone here can give me some input.

Thanks :)
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Monday, March 27th, 2006 AT 4:48 PM

1 Reply

Tiny
BURRBRIAN
  • MECHANIC
  • 158 POSTS
There is one thing that comes to mind when I read this and that would be timing? backfire and run-on are symptoms of timing being too far advanced, if that is okay these trucks had problems with the fuel pump. Here is a guide to help you test it which it should above 48 PSI.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Here is how to change the fuel pump pout if you find the pressure being low. Check out the images (below). Let us know how it goes
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Monday, March 27th, 2006 AT 6:37 PM

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