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90 c1500 4.3 wont start. new fuel pump, filter, relay, plugs, wires, cap and rotor, and distributor module. hoping pushrod can tell me what to do next.
1990 Chevrolet 1500 Pickup

90 c1500 4.3 wont start. New fuel pump, filter, relay, plugs, wires, cap and rotor, and distributor module. Hoping pushrod can tell me what to do next.

(1990 Chevrolet 1500 Pickup)
As I was driving it kinda sputtered a couple of times at road speed, like a fuel filter with trash in it. Then it started running like a plug had gone bad, then it lost power and cut off. Everything but the valve stem caps are new. Lol. Please help
What seems to make the problem better or worse? New parts haven’t changed anything. It sounds the same as when it does. Turns over great but won’t start
How long have you had this problem? Two days. Have replaced everything I can think of by reading old pushrod posts
Tags: chevrolet, 1500 pickup
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1 answer & 7 comments
Popular Answer
on April 28, 2019

IF you have checked out the other answers you should see how to test for ignition spark .. Has that been done?
Sign in to reply
on April 28, 2019
I checked for spark at the plugs but haven’t checked the coil wire yet. I have spark at the plugs. I will check the coil wire after work tomorrow. I don’t have anyone to turn the truck over for me or I would do it right now. Thanks for the help pushrod
on April 28, 2019

*Very carefully* add a small amount of fuel to the throttle body - try starting engine.

IF engine starts or attempts to start - problem is within the fuel delivery system.

IF engine does not respond to added fuel - problem is within the ignition system.

[ There is still the distributor pick-up coil that may be the culprit ]

▪️ While engine is cranking - spark from coil should easily jump a 3/4 inch air gap to a metal ground - you should get that same spark from plug wires ▪️
on April 28, 2019
I did have help for a few minutes yesterday and it is spraying fuel into the throttle body. I will try adding fuel when I do the coil spark check tomorrow. When you say ignition system are you referring to the distributor, or the timing? Thanks
on April 28, 2019

Do the spark test as stated and post results.
on April 28, 2019
I did replace the module that is under the distributor cap as well
on April 28, 2019

Yes - I read that part - I still need to know the results of the spark test as stated above.

Spark should be blue in color and produce an audible pop while testing.

A sick yellow spark that will not jump a 3/4 inch gap is totally insufficient!

Possibilities include weak failing ignition coil - OR - the pick-up coil inside the distributor.

Good luck!
on April 29, 2019
I’m getting spark at the coil
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on April 28, 2019

IF you have checked out the other answers you should see how to test for ignition spark .. Has that been done?
Sign in to reply
on April 28, 2019
I checked for spark at the plugs but haven’t checked the coil wire yet. I have spark at the plugs. I will check the coil wire after work tomorrow. I don’t have anyone to turn the truck over for me or I would do it right now. Thanks for the help pushrod
on April 28, 2019

*Very carefully* add a small amount of fuel to the throttle body - try starting engine.

IF engine starts or attempts to start - problem is within the fuel delivery system.

IF engine does not respond to added fuel - problem is within the ignition system.

[ There is still the distributor pick-up coil that may be the culprit ]

▪️ While engine is cranking - spark from coil should easily jump a 3/4 inch air gap to a metal ground - you should get that same spark from plug wires ▪️
on April 28, 2019
I did have help for a few minutes yesterday and it is spraying fuel into the throttle body. I will try adding fuel when I do the coil spark check tomorrow. When you say ignition system are you referring to the distributor, or the timing? Thanks
on April 28, 2019

Do the spark test as stated and post results.
on April 28, 2019
I did replace the module that is under the distributor cap as well
on April 28, 2019

Yes - I read that part - I still need to know the results of the spark test as stated above.

Spark should be blue in color and produce an audible pop while testing.

A sick yellow spark that will not jump a 3/4 inch gap is totally insufficient!

Possibilities include weak failing ignition coil - OR - the pick-up coil inside the distributor.

Good luck!
on April 29, 2019
I’m getting spark at the coil

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