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No Spark Issue... Needing help!

Discussion in 'The Garage' started by 74BBPowerHouse, Dec 30, 2006.

  1. 74BBPowerHouse

    74BBPowerHouse Registered Member

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    Have a 454. Had it going like a month ago (cause it has a blown tranny) just to hear it rumble and well it ran for 30 seconds and then died. Cranked and cranked. Nothing. Gas in the carb and still nothing. So I went and replaced the cap, rotor and ignition coil. put it on top dead center according to the harmonic balancer. Crank it over and still nothing. So i took out the number 1 plug and grounded it on the header. NO F'n spark! The wire going into the distributor is not getting any juice either. PLEASE HELP!:doah:
     
  2. adamforsythe

    adamforsythe 1/2 ton status

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    Check your wires. not plug wires but main wires running to your dizzy. If thats not it try seeing if any of your other wires are getting spark. yea sounds dumb but who knows. I just ran into this problem with my 350. But my plugs where bad.
     
  3. FOR MUD

    FOR MUD 1/2 ton status Premium Member GMOTM Winner

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    You gotta have 12volts going into the dist.
     
  4. n1iic

    n1iic Registered Member

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    Yeah, check fuses in the fuse box. Otherwise, find a wiring schematic and follow it back.

    Did you double check your voltage checking tool on the battery? It's a bitch to follow a problem when the tool doesn't work correctly.:D
     
  5. FOR MUD

    FOR MUD 1/2 ton status Premium Member GMOTM Winner

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    Or not pushed in all the way.
     
  6. 74BBPowerHouse

    74BBPowerHouse Registered Member

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    i have no juice at the battery wire at the dist. and no spark on the #1. Its not 180* out because the thing ran fine. Just crapped and died on day. The plugs are all off by one on the dist cap when lined up on TDC. The guy who helped with my motor said the dist is one tooth off.
     
  7. 74BBPowerHouse

    74BBPowerHouse Registered Member

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    what fuses could be bad in the block for that? There is not an ignition on if i recall. Just terminals to have power when the ignition is on. im ready to rip out my hair over this. GRRR
     
  8. FOR MUD

    FOR MUD 1/2 ton status Premium Member GMOTM Winner

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    Won't it be easier to put the dist in the right place so the plug wires would be in the right place? If you don't have 12 volt to the dist, it won't run.
     
  9. 74BBPowerHouse

    74BBPowerHouse Registered Member

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    Sure... but it ran before i dont get it.
     
  10. FOR MUD

    FOR MUD 1/2 ton status Premium Member GMOTM Winner

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    Try running a jumper wire from the battery to the dist.
     
  11. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    I'm assuming you checked for this with the key in the ON/RUN position? If not then re-check with the key in the ON/RUN position. If you have 12+ then you have either a bad module or a bad pick-up coil. The pick-up coil is different from the ignition coil. The pick-up coil is located inside the distributor and you must pull the distributor and take it all the way apart to change it.
     
  12. 3 on the tree

    3 on the tree 1/2 ton status

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    Make up a jumper wire from the hot side of the battery, to the dist. If it fires and runs right, then start tracing the orig hot wire to the dist. Sounds like you just did some owrk on the engine. Maybe the dist wire got pinched, and shorted out, or got hot and shorted.
     
  13. BlaKK54Speed

    BlaKK54Speed 1/2 ton status

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    i would make sure all of your plug wires are ran correctly, that sounds a little funny to me. i have never heard of having plug wires one place off becuase of the distributor being in the wrong place. i would find out why you dont have 12 volts at the distributor wire before trying to replace it with another hot one. make sure its not ground out/blown fuse or anything else wrong with it first. just my 2 cents
     
  14. 74BBPowerHouse

    74BBPowerHouse Registered Member

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    What fuse would control that? Is it hidden in the wiring on the firewall?
     
  15. 74BBPowerHouse

    74BBPowerHouse Registered Member

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    And yes the key was on.
     
  16. Jason4x4

    Jason4x4 1/2 ton status

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    I think the power to the inside of the cab, which would then go to the ign switch to the coil, comes from the wires on the battery side of the starter, there is fusible links down there which might be bad.
     
  17. BlaKK54Speed

    BlaKK54Speed 1/2 ton status

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    there is a fuse in the fuse block (inside cab) labeled IGN check that one. check them all while your at it, they are fairly easy to see once your down there anyway.
     
  18. BlaKK54Speed

    BlaKK54Speed 1/2 ton status

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    on your firewall there will be a block with 2 posts, random wires branching from both of them, they are all hot power wires. one is connected to the battery all the time, make sure none of them look old/burnt. there will be a jumper wire from one terminal to the other, make sure its still good/conducts electricity.
     
  19. 74BBPowerHouse

    74BBPowerHouse Registered Member

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    There are two fuses on that block where the fire wall is. They look good. Ive looked at the ones on the fuse block itself numerous times.... theyre just all glass fuses
     
  20. BlaKK54Speed

    BlaKK54Speed 1/2 ton status

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    right you should be able to see if any of them have burnt out elements in them....... the fuses on the firewall may be bad, take a multimeter and make sure they conduct
     

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