Question about 1990 GMC S-15 Jimmy

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Coil distributor plugs wires all fire but irregular at the #1 and wont start did I jump my timing chain or is it more likely the module on the distributor ? adjusting my distributor doent change anything for the better either. and the little bit it does turn over is very weak , like an emphysema exhale for an engine.

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  • sentnl13 Mar 09, 2009

    I had thought so too but I had it running and then she just wont start I think that its actually a bad module or pickup coil under the distributor cap. Wont know till I get a multi meter.

  • sentnl13 Mar 09, 2009

    also I just fould A chiltons now which helped in this process but any more advice is welcome too.

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  • 1,055 Answers

Probly ,find the top center mark on the crank pully,line it up with the inicator,pull off disturbiter cap,rotor should be lined up with num 1 plug wire or extact oppisit, any place else and you have jumped time

Posted on Mar 09, 2009

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Hello Nummy.

If you have spark at the coil the module is OK. The module fires the coil.
Your problem then becomes the ignition wires, the distributor cap or the rotor.
These are the items that carry the high voltage to the spark plug.
There is also the possibility the spark is jumping off at the coil itself when all is hooked up.
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