problems with Silverado 94

Asked by Mar 17, 2016 at 01:00 AM about the 1994 Chevrolet C/K 1500 Cheyenne Standard Cab SB

Question type: General

Last month I change the fuel pump on my
Silverado 94 I connected all wires and hoes in the
pump the truck turned on but like 2 weeks back it
was weird because all of a sudden started dying on
me while it was running and before it used to dying
on me but when you try turning on it turned on but
now when it's dyes it do doesn't want to turn on I
have to put starter fluid in the carburetor and it'll
run but yesterday and today i did the same thing
and I have trouble starting it .it started and I have
to be stepping on the gas so it wouldn't turn off
some people have told me it was the distributor or  
the  carburetor I was wondering could it be the fuel
pressure to but I want to get a second opinion oh
really be glad if you would help me thank you
appreciate

8 Answers

95,025

Did you replace the fuel pump relay when you did the pump? If not I would try that first. If still having problems try pulling the codes, see if there is a sensor malfunction, possible TPS or MAP. HTH

71,355

Spraying starting fluid down the TBI and it starts then is an indication of a fuel issue. It would be good idea to check the fuel pressure, it should be 9 to 13 lbs. If it is not you want to pinch (block off) the fuel return line to see if the pressure rises. If it does then the problem may be the fuel regulator in the TBI. It would be best then to have it rebuilt with new injectors also. It is fairly easy to do.

71,355

To make sure the fuel pump is running just turn the key to the on position and listen for the fuel pump to run. It should. Otherwise do as tennisshoes says with the relay.

How do i check the pressure

I checked already the pump is working. But now how do I check the fuel pressure

71,355

You can rent a fuel pressure gauge from the parts store, it needs to have the fittings to hook up to the line running to the TBI & into the TBI. Your checking on the pressure line. Cycle the key on, or turn the truck on and observe the pressure reading on the gauge. Should be 9 to 13 lbs. Turn the key off and watch and see it the fuel pressure drops.

It can it be a tbi senser

95,025

As I stated above it could be, but best to check the flash codes so you don't just start throwing parts at in hopes that you inadvertently fix the problem, a lot of times it is a circuit problem and not a sensor.

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