GM Truck Club Forum banner

1994 K1500 Silverado 5.7 TBI

571 Views 13 Replies 7 Participants Last post by  BackyardMech
Engine cranks, but won't fire.

I'm 69 and this is the first older vehicle I've worked on in many moons so please bear with me as I have forgotten a lot.

I installed new plugs, wires, cap and rotor and the old rotor was stuck. I tried blaster and wiggling then decided to put a 1/4" x 1" flat bar across the flats to pry it off from the bottom. It took a lot of force and finally broke coming off. I've since read where prying it off this way can damage the distributor. Is that true?

I cleaned up the shaft for the rotor, then applied dielectric grease on to it before installing the new rotor. I also put some on each of the cap's interior contacts as well as the brass tip on the rotor. I wouldn't think so, but could any of this grease prevent it from firing?

Second issue is that somewhere along the line the tubing broke from the EGR solenoid to the carb. Could this prevent it from firing?

Would installing an HEI distributor, etc. significantly improve gas mileage?

1 - 3 of 14 Posts
Ron, welcome aboard.

Spark, fuel and air, along with compression are necessary to run.

Did you check for fuel?

The first thing I try is a spray of fuel, or starter fluid, into the throttle body.
If it starts you have a fuel delivery problem.
  • Like
Reactions: 1
Look, I'm not trying to be hard to get along with; but test parts before going out and buying a new part.
The pump may be bad; but you don't know that.
Try spraying start fluid into the throttle body and if it starts, you know fuel delivery is the problem
Then you test the fuel pressure.

Note, it may not start because the spark may now require adjustment.

And explain what changing brake lines has to do with the vehicle starting.
  • Like
Reactions: 2
My wife has bad knees and was having a really hard time getting into the truck so I dropped down two tire sizes and now have 225's on it but the speedometer is way off. Is there anything that I can do to correct it?
That's going to hurt the gas mileage. Why not go back to original tires and add running boards.
1 - 3 of 14 Posts