Suddenly won't start

Discussion in 'Small Block Tech' started by racerxjj67, Oct 2, 2018.

  1. racerxjj67

    racerxjj67 Well-Known Member

    Drove the car for a while and it ran perfectly fine. Went to start it about 1 hour later and the engine spins but won't fire up. It's getting fuel to the carb, just appears to not be getting a spark. Pulled a plug with wire connected to see if I could see an arch... nothing.

    Could it be the coil, distributer, etc. Any other tests I could do to help pin point it?
     
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    What ignition are you using? Points, HEI, Pertronix, or other?
     
  3. BuickV8Mike

    BuickV8Mike SD Buick Fan

    Let's see if it starts again when its fully cold.
     
  4. racerxjj67

    racerxjj67 Well-Known Member

    Tried it a few days later and still nothing. Engine spins won't fire.
     
  5. racerxjj67

    racerxjj67 Well-Known Member

    I originally thought it was points but a friend who looked at it when i put it back in told me it was converted to electronic ignition. Honestly, I never checked myself. Now I feel stupid.
     
  6. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    No, not stupid, more like uninformed. That's your choice though. You realize we can't help you until we know what ignition it is. Take some pictures after removing the cap.
     
  7. racerxjj67

    racerxjj67 Well-Known Member

    Will do!
     
  8. Bad Boattail

    Bad Boattail Guest

    Put the 0 degree mark on the damper in line with the timing mark pointer.
    Check if the rotor is pointing at the #1 cylinder terminal.
    If not: turn the damper 360 degrees and look again.

    If not: nylon coating on original timing sprockets is gone, too much slack on the chain and it jumped a few teeth when you were shutting the engine down.

    Edit: just read that you don't have a spark, so it's ignition related.
    Is there power on the wire that feeds the ignition coil (or + terminal at the HEI)?
     
    Last edited: Oct 2, 2018
  9. Bad Boattail

    Bad Boattail Guest

    Is this ignition still on the engine?


     
  10. BadBrad

    BadBrad Got 4-speed?

    Does the rotor spin? Sometimes the roll pin shears off and no more fire!
     
  11. racerxjj67

    racerxjj67 Well-Known Member

    Here's what distributor looks like in the car if that helps with the diagnosis. 20181004_160002.jpg 20181004_160027.jpg
     
    JStov likes this.
  12. alec296

    alec296 i need another buick

    Crank engine , see if rotor turns. Check for voltage at coil and at you ignition in distributer.
     
  13. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    Looks like a Petronix. If you have key on voltage at the coil +, you could try putting points back in.
     
  14. buick64203

    buick64203 Right wing conservative Staff Member

    I bet the Pertronix excremented the bed
     
  15. racerxjj67

    racerxjj67 Well-Known Member

    Engine turns just won't fire up.
     
  16. buick64203

    buick64203 Right wing conservative Staff Member

    Whats he's getting at is that the engine can crank but the distributor can remain still if the roll pin sheared
     
  17. Mart

    Mart '71 350 GS, almost stock

    Yep on points. Budget fix if the module is toast.
     
  18. racerxjj67

    racerxjj67 Well-Known Member

    So turn key to accessories and just use a volt meter on the + post of the coil and see if it reads anything?
     
  19. racerxjj67

    racerxjj67 Well-Known Member

    Ok, so you threw a word in there that confused me. "Module." What are you referring to? And what's the budget fix?
     
  20. racerxjj67

    racerxjj67 Well-Known Member

    Just so you know, automotive electronics confuses the hell out of me. Especially ignition stuff. So I need clear guidance.
     

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