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Old 11-22-2008, 04:33 PM
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1939 ford flathead need help!!

i'm having a hard time getting a hot fire at the coil wire, i got a new 6-volt coil, set points at .17, got 6-volts going to the + side of the coil, has small spark but not enough to fire a spark plug.

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Old 11-22-2008, 06:51 PM
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you didn't mention if it is 6 or v8 .If it is a 6 the points should be set at .025" a v8 has duel points and and should be set with a degree wheel or on a dist. machine , also you didn't say weather you installed a new condenser.
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Old 11-23-2008, 08:11 AM
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The '39 Ford flathead was 6 volt with positive ground. You have the coil wire reversed from what it should be. The wire coming from the ignition switch should be connected to the (-) terminal of the coil. The wire from the coils (+) terminal will then go to the distributor. Replace the condenser. Cheap to replace and will make a major difference if the one in it now is bad. The point gap should be .016-.022. For new points set them at the .022 setting as the fiber pad will wear down fairly quick during the first 1000 miles. Plugs should be set at .025.
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