Re: Tune up gone bad

Posted by John T on June 04, 2007 at 11:47:26 from (66.244.83.147):

In Reply to: Tune up gone bad posted by Kyle in NY on June 04, 2007 at 09:09:15:

Kyle, heres part of my troubleshooting procedure, the part which might help you in case the points or the condensor are shorted out or theres a short in the lil stud where the wire from the coil passes through the side of the distributor which wires to the points. It only requires a simple DC test lamp.

3) Next, place your voltmeter or test lamp over on the coils low (to distributor) terminal side, turn her on and crank the engine over.

4) A test lamp there should flash ON (when points are open) and OFF (when points are closed) as the engine is cranked slowly.

5a) If the lamp never comes on there, the coils primary is bad/open,,,,,,,,,,or the points are never opening,,,,,,,,,or theres a shorted/bad condensor (remove its lead to points and see if lamp comes on, if so, bad shorted condensor or its wiring),,,,,,,,or the points wire is shorted,,,,,,,,or the distributors side pass thru stud is grounded (use ohm meter to test that),,,,,,,,,or the points may have a shorted spring.

5b) If the lamp never goes off as engines cranked, the points are not closing or are bad,,,,,,,,or the wire or circuit is missing from the distributor to the points,,,,,or the distributors not well grounded to the tractor.

She cant fire the coil unless its low side is getting a conductive ground return path via closed points and then the circuit is open when the points open.

Be sure the condensor or its wiring is NOT shorted out and see if the lite comes on (when points open) with the condensor disconnected. If removing the condensor makes her spark, replace the condensor.

John T

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