Question about 1996 Chevrolet Silverado 2500

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No spark i have a 96 chevy silverado 1500 with the 4.3 in it. one day i went out to start it up and it wouldnt start. wasnt getting any spark..changed the plugs, wires, cap, rotor, ignition module, timing chain, and even the computer still nothing. Any ideas?

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  • Thomas Tabron May 11, 2010

    Have you changed the distributor? That is my gut feeling.

  • Anonymous Mar 23, 2014

    Changed distributor, rotor, cap, wires, module and coil pack, getting weak spark to coil help

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Possibly the crank sensor.

Posted on Jun 02, 2009

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Here are a couple of ideas. However, I think you've already covered most of them.

1. Remove the distributor cap and crank the car. If the rotor turns you're ok. If it doesn't turn then that's you're problem and you will probably need to change a timing belt/chain. (already done this)
2. Check the spark from the ignition coil by pulling the coil wire from the center of the distributor. Use an alligator clip to attach a short wire to the coil wire contact. Bare the other end of this short wire and set it up so it's sitting very close to the engine block. Turn off the lights and try to start the car. You should see a spark jump from this wire to the block. If you don't see a spark it's likely your ignition module (already changed) or ignition coil (could this be it?)is bad.
3. If you have a spark maybe it's not getting to the plugs. You may need to replace the distributor cap and rotor. (already done this) You can test if the plugs are sparking by pulling one, re-attaching the spark plug wire and seeing if you get a spark when you try to start the engine in the dark. Please note, the metal threads of the spark plug need to be shorted to the engine block to complete the circuit during this test.

Posted on Jun 02, 2009

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