Chevy not starting

Asked by Jun 02, 2017 at 10:46 PM about the 1990 Chevrolet C/K 1500 Silverado 4WD

Question type: Maintenance & Repair

My 1990 chevorlet silverado k1500  will turn over
all day long but will not start! I got copression,
spark, but its not spitting fuel out the throttle body!
Iver replaced: fuel pump, pump relay, distributor
sensors, oil pressure sending unit... im stuck and i
need my truck running asap

3 Answers


Typically to get the injectors to open is they're powered by the main fuel injection relay, this provides positive battery voltage, then the ecu triggers them to earth/ground to complete the circuit. So first check for you is for 12v at the injector plug harness. Easiest test for this is with a noid light, handy little things, get them at Ebay. Unplug an injector plug, plug the noid light into the harness and crank it over, if you can see a little light pulse in the noid then the injection trigger is working if not then the injection relay or ECM is bad or wire harness or grounds, fuses ect.

Thanks for the help, i figured it out! I had a short to ground on the wire running to my smog pump.. it was laying on the exhaust manifold go figure... after all the money i spent, it was a free fix!


Glad its fixed.

Your Answer

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 855 nationwide C/K 1500 listings starting at $2,603.


Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
  • #2
    John Saffrahn
  • #3
View All

Related Models For Sale

Used GMC Sierra 1500
1,219 Great Deals out of 64,512 listings starting at $999
Used Ford F-150
3,227 Great Deals out of 220,482 listings starting at $1,200
Used Chevrolet C/K 2500
204 listings starting at $6,495
Used Chevrolet Camaro
453 Great Deals out of 31,411 listings starting at $1,450
Used Chevrolet C/K 3500
207 listings starting at $3,199
Used Chevrolet S-10
11 Great Deals out of 1,224 listings starting at $1,550

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.