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We have a Y102 that we put a 302 ignition on. The motor has been rebuilt already, and we've had trouble with intermittent or no spark since the conversion, getting progressively worse. It would start (with 5 or 6 pulls), run full for about 4-5 seconds then die out, now has no spark. No wires are cut or worn, connections are like new. Killswitch was never hooked up, still running stock setup. Want to know what to ohm out or replace... Any ideas?? Trying to get it going for Lock Haven...
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302 Ignition 6-9-17 These readings are taken from new and known good units. Ohms reading on electonics can vary up to + or - 20% Meter used was a Fluke 73 II digital auto-ranging volt-ohms meter. Voltage used for ohms testing was a consistant .729 volts Other meters with different ohms testing voltage will affect the electronics differently and give different ohms readings. Non Auto-Ranging meters may use different voltages in different ranges Non Auto-Ranging meters may reverse the polarity of the test leads in different ranges Primarily what your looking for is an open circuit that should have resistence or a close circuit that should not be. Pick up coils green-red 195.4-202.7 ohms Primary coils ground-blue 2.6-3.2 ohms Secondary coils black-white 1.9-2.1 ohms ground to end of copper core spark plug wire 5.776-6384 K ohms Transistor Unit black-red meter test leads red-black meter test leads ground-green open ground-green 2.071 m ohms ground-black open ground-black open ground-white 2.046 m ohms ground-white 2.047 m ohms ground-red 31.5 k ohms ground-red cycling on off on continuously ground-blue open ground-blue open black-green open black-green open black-white charge then open black-white open black-red open black-red open black-blue closed-0.2 ohms black-blue closed-0.2 ohms blue-green open blue-green open blue-white open blue-white open blue-red open blue-red open red-green open red-green 2.117 m ohms red-white 2.152 m ohms red-white 2.105 m ohms white-green open white-green 4.82 m ohms -
Nick I will have a spare 302 mag at Lock Haven if you can't get it running beforehand.444-B now 4-F
Avatar photo credit - F. Pierce WilliamsComment
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Depending on the electrical quality of the spacer that you needed to add under the bearing holder you may not be getting a good ground for your mag. I would try running a ground wire from the outside of the mag housing to the 102 case. Also, I always put internal star washers on all ground connections because they provide a reliable gas tight metal to metal connection.
John Adams
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I have seen these develop a bad connection through corrosion at the plug together connectors. check for continuity and look for that black oxidation, usually on the plug that goes to the coils.Comment
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