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Old 03-30-2019, 01:16 PM
Brandon_b Brandon_b is offline
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Trying to bench spark wiring wrong?

I got a early model atomic 4. Used been sitting for 4 year and fot it home i wired it up half fast to try to see if i get spark and to check compression.
I ran a ground from battery to ground bolt on starter
A positive to starter solenoid from battery as seen on diagram then I just decided to run a jumper wire from Battery positive to coil positive I have brand new coil points condenser I took the distributor cap off to watch the points see if I get Spark I get nothing am I missing something i jumped the motor wit jumper cable to starter solenoid and grounded to the block that was my way to get it to crank
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Old 03-30-2019, 08:21 PM
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ndutton ndutton is offline
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Your description of temporary wiring sounds to me like it should work. Things to check:
  • Voltage test between the small coil + post and an engine block ground. Should read battery voltage.
  • Proper dwell setting of the points. If they're not opening and closing you will get no spark.
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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Old 03-30-2019, 10:19 PM
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If you leave that jumper from the battery to the coil on all the time, I would be concerned that you would burn out the coil.

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Old 03-31-2019, 01:38 AM
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The points might not be conducting. They may need to be filed before they will conduct electricity.

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Old 04-01-2019, 12:30 AM
Sam Sam is offline
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I'll second John's suggestion. My early A4 points need a couple of light passes with a point file or emery cloth every spring after just a 6 month lay up hibernation. After 4 years... probably needs it for sure.
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