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furguson30

A

Anonymous-0

Well-known Member
Just installed 12 volt conversion kit. New alternator, coil and starter. New starter turn's over way to fast, and won't start. Reinstalled old starter, and that one turn's over at right speed but get's hot and tractor still won't start.
 
"12 volt conversion kit" ..."new coil"

Some simple checks:

What coil did you get?

If coil is marked "12 volts, no external resistor required" you have a direct 12 volt coil so DO NOT use the resistor supplied with the coil. If you do, the symptoms will be hard or no start.

If coil is marked "12 volts, external resistor required" you actually have a 6 volt coil and will need the resistor that usually comes with a kit. The resistance of + to - on coil and of the resistor should both be about 1.5 ohms. I've have seen some supplied resistors that were well above that (5-6 ohms) that caused hard or no start.

Also with alternator your system should be negative ground. Check and make sure that the - post on the coil is connected to distributor.
 
I don't believe there is such thing as starter turning too fast...

If it's not starting we need more information as to what you've checked. Spark? Fuel? Compression?

Loss of compression will "allow" a starter to turn the engine faster, but that is only a symptom, not a cause.
 
Reinstalled new starter, you were right with negative ground to coil. Bypassed new resistor and had major backfires, so reconnected and still no start. Maybe fried a wire some place?
 
Sounds like the timing is off or the firing order is wrong.

Did you have the distributor out? Could be out of time.

Did you have the plug wires out of the cap? Could be the firing order wrong.
 
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