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where's the spark? Blazer won't start.

  #1  
Old 03-25-2016, 11:12 AM
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Angry where's the spark? Blazer won't start.

92' K-15 Blazer. No spark, won't start. Charged battery, new coil, rebuilt distributor, new distributor cap, fuses are fine, new computer. Tried new spark advance control module. Wires have been tested with test light and are okay. Scratching my head. I have no clue what to do next. Don't think it is getting spark to coil or distributor. It will crank but won't turn over. New fuel fillter. HELP!
 

Last edited by Rorie Anne Parker; 03-25-2016 at 11:17 AM.
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Old 03-26-2016, 06:52 AM
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Originally Posted by Rorie Anne Parker View Post
92' K-15 Blazer. No spark, won't start. Charged battery, new coil, rebuilt distributor, new distributor cap, fuses are fine, new computer. Tried new spark advance control module. Wires have been tested with test light and are okay. Scratching my head. I have no clue what to do next. Don't think it is getting spark to coil or distributor. It will crank but won't turn over. New fuel fillter. HELP!
What abouT the ECM?If you have a bad/defective ecm it will prevent the engine from firing up.Also have you ever changed out the fuel pump yet?You may want to run a fuel pressure test.
 
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Old 03-27-2016, 09:18 AM
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the ignition modules in the older chevys used to go out all the time and would cause it not to spark but im guessing that should have came with the new distributor

its possible it could be the computer. when i bought my 1990 the computer was screwed up making it misfire. i was lucky enough to be a hoarder and had one laying around i could slap in the truck
 
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Old 03-28-2016, 03:16 AM
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Originally Posted by abig84 View Post
the ignition modules in the older chevys used to go out all the time and would cause it not to spark but im guessing that should have came with the new distributor

its possible it could be the computer. when i bought my 1990 the computer was screwed up making it misfire. i was lucky enough to be a hoarder and had one laying around i could slap in the truck
You are right the older ignition modules would go out from time to time.My fathers 1982 Silverado quit on us one cold Louisiana nite.He was tired of them burning out.So he went out and bought the 1990 chevy step side pick up.It had the last generation of the 5.7 liter 350 engine.That truck used to smoke both back tire`s dry or wet road.
 
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