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  • 1983 atc 70 no spark

    i got a atc 70 with no spark. filed points and am having trouble setting them. is there a trick to this? also we think the coil might be bad to. does anyone know the ohms for the coil? also the spark plug wire? also what should the compression be?


  • #2
    I recommend you download the manual and work in from the plug backwards.
    Some of the simplest things can cause problems

    Its just that the manual tells you all the measurement values for the ohms and the voltages.

    An example Ignition Coil:
    Primary Terminal to ground - 1.35 -1.65 ohms
    Primary Terminal and plug cap - 7.65 - 9.35 ohms

    170 +/- 21 PSI, Service Limit 127 PSI.