Question about Chevrolet Blazer

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No spark 350 chevy tbi

Just put in a new motor in my 1990 blazer put everything togeter but no spark new coil, new distributor but still no spark i have power to the coil checked all grounds really stumped please help

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  • yadayada
    yadayada May 11, 2010

    do u have power to the distributor?

  • charlene tripeltt Oct 04, 2013

    yes

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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.

Posted on Apr 23, 2009

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First off..... make sure your coil is wired up right. positive to the positive post, negitive to the distriputor. make sure you gap your points too. you wont get any spark if they are not closing enough. your gap should be around .016 at the peak of the lobe.

Posted on Jun 03, 2009

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