1988 K-5 silverado 5.7L TBI Plow truck parked for summer. now trying to prepair for the winter season. it will start then die in just a few seconds!
I have replaced the cap,rotor,wires,plugs and fuel filter. I can hear the fuel pump come up to pressure when the key is in the on position.
what else should I check?????

 

*Moved this to 'The Lounge' since it does not concern a Blazer.*

 

Check the actual fuel pressure, the pump may still be priming but it may not be able to pump the necessary capacity. It may be something as stupid as a corroded contact creating resistance and the pump doesn't run at full output.

 

thanks will check that

It is a Blazer...Silverado is the trim package!

gee whiz

 

Well - gee whiz - thanks for specifying that.

*Moved to 'Full Size K5 Tech'*

 

Bad gas? Gummed up fuel injectors?

And we can't read your mind. You must include your vehicle information. Listing a trim package without a base model doesn't cut it.

 

does it just die like you shut it off or does it start to spit and sputter then shut off

 

bogs and stops, if I pump the pedal like crazy then she'll cough and spit

when checking the fuel pressure what p.s.i. should I be looking for?

 

8-10psi

 

I didn't realize TBI ran on such a low pressure. Guess one learns something every day. At least I try to!