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Help No spark

Discussion in 'The Garage' started by jk5blazer, Feb 20, 2005.

  1. jk5blazer

    jk5blazer 1/2 ton status

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    I just bought an 84 k5. I knew it wasn't running. The guy said it wasnt getting any spark. Any suggestions would be great. I got it for $750.00. It was a fellow firefighter. So I dont mind spending a little money to get it fixed. Thanks
     
  2. adamforsythe

    adamforsythe 1/2 ton status

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    Hello,

    first off check to see if any of the wires on the dizzy are disconnected. How old is the dizzy?
    Thanks
    Adam
     
  3. riggz

    riggz Registered Member

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    where in alpharetta are you located? im in roswell. maybe we could hook up sometime and help each other out. :) send me a PM.
     
  4. sweetk30

    sweetk30 professional hooker Premium Member

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    check for power on big pink wire at dist cap . need 12v at key on and in crank mode.
     
  5. goldwing2000

    goldwing2000 Guest

    If that's good, pull the top off the cap and check the wires to the coil.
    If those are good, check the wires from the cap to the module.
    If those are good, check the wires from the module to the pickup coil.
    If those are good, then you have either a bad coil, bad module or bad pickup coil. When checking wires, don't just look at them and assume they're good. These wires like to break internally. You'll need an ohmeter to do it right. Attach to both ends of the wire and wiggle it around to check for internal breaks.

    Most auto parts stores can test the module. Be sure they test it three or four times in a row to make sure it warms up.
    If you have that ohmmeter, you can check the coil and pickup coil yourself.
    The coil should have around .5 ohms between B+ and ground and... crap, forgot the number... 20Kohms? from the output pad on the bottom to ground.
    The pickup coil should be like .5-1.0 ohms between the wires.

    I've had every single one of those things go wrong at some point. There might also be a problem with major corrosion on the cap & rotor. Be sure those are new before doing anything else.
     
  6. jk5blazer

    jk5blazer 1/2 ton status

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    thanks ill give it a try.
     

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