Timing light will not pick up on #1

Discussion in 'Engine Topic' started by 76 camaro car 1, Aug 22, 2011.

  1. 76 camaro car 1

    76 camaro car 1 Veteran Member

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    For some reason or another My timing light will not pick up on the #1 cyl. Someone on here said I could use I think it was #6 to time the car. If I use #6, do I time the car as if I were using #1 ? Thanks
     
  2. Todd80Z28

    Todd80Z28 Moderator Staff Member Lifetime Gold Member

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    Should be the same, as both are at the same rotational angle on the crank.
     
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  3. theflash

    theflash Veteran Member Lifetime Gold Member

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    If it's not working on #1 why would it work on any other plug wire? Check to see that the magnet didn't fall out of the end of the pick up that you clamp around the plug wire.
     
  4. John Wright

    John Wright Veteran Member Lifetime Gold Member

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    Plug is dead on number 1....it won't fire the light if there is no fire on number 1.
     
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  5. theflash

    theflash Veteran Member Lifetime Gold Member

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    Then you have other problems to address before you use a timing light.
     
  6. bfmgoalie

    bfmgoalie Veteran Member

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    I always look to be educated........The spark is passed through the wire to the plug, doesn't the timing light pick up the spark as it travels to the spark plug? I know nothing about electrical stuff.
     
  7. John Wright

    John Wright Veteran Member Lifetime Gold Member

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    If the spark doesn't jump the gap at the plug...nothing has happened.

    You can also check the temp of the header tube at number 1 to see if there is any action going on there.
     
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  8. bfmgoalie

    bfmgoalie Veteran Member

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    Does that mean when the rotor is pointing at the #1 cylinder and ready to "fire", no spark will proceed down the wire because the spark doesn't jump the gap at the plug?
     
  9. John Wright

    John Wright Veteran Member Lifetime Gold Member

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    Where will it go? the circuit must be completed before any electrons can pass by.
     
  10. John Wright

    John Wright Veteran Member Lifetime Gold Member

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    Let me see if I can explain the way that I think things are happening with the timing light.

    When the spark has an atmosphere ionized enough to allow electrons to travel the distance across the gap at the plug end to find the ground the plug fires. As these electrons find the ionized path across the gap and start jumping the gap more electrons behind them follow. This is current flow. While the current is flowing through any conductor, there is a magnetic field set up around the conductor(ie plug wire). The timing light pickup detects this field and fires the light. So if there isn't any current flowing(no electrons moving across the gap), there is no magnetic field around the plug wire so the timing light will not fire.
     
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