| Al Smith | -- 11-10-2009 @ 9:59 AM |
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Is there an easy way to check to see why my '42 COE has no spark ?? Coil is OK and my flathead ran until suddenly quit. Oh yeah -- need to know that it was running on 12 volts. Im sure you realize how tough it is to remove the distributor on a COE. thanks
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| supereal | -- 11-10-2009 @ 11:35 AM |
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Al: Check to see that power is reaching the coil input when the ignition switch is on. If you are using a six volt coil on 12 volts, it is likely that the coil has burned up, or the points have. The six volt coil runs on a nominal 3.5 volts due to the resistor between the coil and the switch. If you have power to the coil, put an ohmmeter between the input wire to the distributor and ground with the switch off and turn the engine. You should see the points open and close. Either coil or point failure can cause your problem. I agree that working on a COE can be tough, but they are great trucks, anyway.
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| Al Smith | -- 11-24-2009 @ 11:58 AM |
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An update -- thanks to "supereal's" test advice my COE distributor checked out OK. The condenser was bad. Nice thing about flathead distributors is the outside location of the condenser so that you can test it and change it without removing the distributor -- pretty tough to do on a COE truck. Come to think of it most flathead distributors are buried aren't they. My test was conducted with a 1 1/2 volt light bulb continuity tester. It tested shorted with the condenser in but tested OK after I removed the condenser. The light blinks nicely when the engine is cranked -- thanks.
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