Question about 1988 Chevrolet G30

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1988 Chevy Van No Spark

A new engine was dropped in a Chevy Step Van...
The person that put it wired the plugs wrong, so I changed them and got the truck started...
As soon as I parked it outside, I rev'ed the engine a couple of times and it died and will no longer start.
It has a TBI and both injectors are spitting gas into the throttle body, but there is no spark at all from either the coil or the distributor.
I replaced the coil, and still nothing. It is still spitting out gas, but there is no spark from anything.
There is over 12v going into the coil and distributor as well.
Could it be the ICM as well?

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  • shthappens78 Apr 15, 2009

    voltage is regular 12v battery voltage

  • shthappens78 Apr 15, 2009

    anyone with a solution to this one yet?

  • Richard Scordino May 11, 2010

    What is actual voltage at the coil? How much over 12v?

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  • Chevrolet Master
  • 1,051 Answers

Have you put a spark plug fire tester on the plug wire and verified there is no fire at the plugs or do you just figure because it is getting gas if must be an issue with the fire. I ask this because the age of the truck it may have a plugged converter or muffler on the truck and if one of them are plugged it won't allow the engine to pull the fuel into the cylinders and fire. You can remove the 02 sensor ahead of the cat and the truck will start if one of them is plugged up. The truck will not run well but it will start and run ruff. Hope this helps.

Posted on Apr 10, 2017

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SOURCE: no fuel no spark 1990 k5 blazer 350

Take off the distributor cap. Check the star wheel that is splined to the distributor shaft that the pick-up coil uses. Make sure this wheel is not loose on the distributor shaft. It is right above the pick-up. If it is loose, replace the distributor. This is a common problem. If it needs one, all the part stores stock the distributor.

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SOURCE: no spark 350 chevy tbi

You need power on both sides of the coil with key on engine off. With test light on neg side of coil you should get flashing light with engine cranking. No flashing indicates no trigger from ign module. No flashing can also mean the pick-up is faulty. To check pick-up dissconnect from module and use analoge meter set on ohms.Check meter movement during crank. If o/k check rotor for burn through.and change module.

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SOURCE: Help w 1994 chevrolet truck

disconnect the batt. is your fuel pump running check fuse listen for it

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SOURCE: 1987 chevy s10 2.5l tbi will not start. changed

That eliminates the crankshaft and camshaft position sensors. Have you checked the fuel injector itself for an open winding or stuck valve plunger? There should not be a steady 12 volts to the injector--if good injector, it would be spraying fuel steadily into the throttle body. But at least the engine should try to run if poorly. Take the injector out, dry it off with air, and intermittently apply 12 volts to one terminal while grounding the other. You should hear a click from inside every time you touch 12 volts. If not, replace it. If it does, it may be plugged with debris. Try blowing through it in reverse with compressed air.

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SOURCE: 1987 Chevrolet S-10 Pickup1987 chevy s10 2.5l tbi

Check the trottle body postioning sensor...

Posted on Jul 19, 2009

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