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TOPIC: 1957 Mercury Mark 75 No spark

1957 Mercury Mark 75 No spark 2 months 1 week ago #133397

  • MetallHed
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Ok still plugging along on this motor.. replaced timing belt, fuel pumps, plugs, lower end lube, impeller.

Pumps fuel and water. Turns over fine.

Starter button doesn't work and no spark on all cylinders. Are these related problems? I don't read power at the coils or resistors but there is continuity. I have power at the solenoids. Solenoids turn motor when hooked up directly to battery.

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The following user(s) said Thank You: dave bernard

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1957 Mercury Mark 75 No spark 2 months 1 week ago #133411

Could be a broken wire in the external wiring harness

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1957 Mercury Mark 75 No spark 2 months 1 week ago #133413

  • MetallHed
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Would the controls and external wiring harness be worth it to rewire completely?

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1957 Mercury Mark 75 No spark 2 months 1 week ago #133414

do a ohm test to see IF a wire is broken.

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