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no stinking spark!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by coolhandluke, Dec 21, 2001.

  1. coolhandluke

    coolhandluke 1/2 ton status

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    Dallas Texas
    Ok, somehow I don't have any spark, and thus, no running, where do you start trying to figure out what's wrong?

    83 k5 originally diesel, now 350, 700-R4 12 bolt rear, 33x12.50 BFG Trails (yuck), desperately seeking a lift
    sometimes nothing is a real cool hand
     
  2. shawnboy

    shawnboy 1/2 ton status

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    Toronto, Canada, eh.
    coil to cap wire, wires to coil, rotor nfg, cap nfg
    Shawnboy.

    <font color=red>If you are having too much fun it's probably illegal.</font color=red>
     
  3. ArrowheadK5

    ArrowheadK5 1/2 ton status

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    Just had this problem, first thing I did was take off the dist cap and rotor, both were scorched. Damp weather pushed them over the limit and they stopped working together. Also check wiring, etc, as stated above. Good luck, season's greetings!

    The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
    --Thomas Jefferson
     
  4. ricka

    ricka Registered Member

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    As suggested, check the distributor cap and rotor for visible signs of wear.
    These are cheap enough that if you have had them long enough, buy new
    ones as part of a tune up. Try these and if that doesn't solve the problem,
    go deeper. I'll bet it's the HEI ignition module - a $20 part. Buy two and keep
    one spare for next time this happens. If it's not the module, it the distributor
    base isn't picking-up a signal.

    -------
    Rick Anderson (rick.d.anderson@tektronix.com)
    Tektronix, Inc. Beaverton, OR 503-627-2630
     
  5. JIMS_WYO_K5

    JIMS_WYO_K5 Newbie

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    Had same problem in my '83. Working with the distributor did nothing for it. It was a bad connection on the spark control module behind the glove compartment. I could reach up there and tug on the harness and away it would go. I ended up jumping the box out and it has never happened since. Hope that helps.

    Jim from WY
     
  6. RedDwarf

    RedDwarf 1/2 ton status

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    Module in the distributor could be bad too. They go bad pretty much all at once. You can have your coil tested at an auto parts store, but I don't think they will be able to test your module, so make sure you've checked everything else good before you replace it.
     

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