Posted by Steve@Advance on June 01, 2020 at 15:37:47 from (24.182.105.128):
In Reply to: Failure to start posted by DennisH on June 01, 2020 at 13:35:40:
Do you have a volt meter, preferably an analog, or even a test light?
Connect the meter/light from the ignition side of the coil to ground.
If it has a neutral start switch, put the transmission in gear to disable the starter. If no neutral switch, remove one of the small wires from the solenoid.
Turn the ignition switch on. You should have power at the coil.
Turn the switch to start and watch the meter/light. It should have power when in the start position. Try it several times, the voltage should be steady and never drop.
If that tests good, the wiring and switch are good.
Reconnect the starter. Remove the coil wire so it wont start. Give it a crank and watch the voltage. It will drop somewhat but should remain reasonably high. If there is a resistor, try testing on the ignition switch side of the resistor. With a volt meter the reading needs to stay above 9 volts.
If it is dropping too low, there is not enough power left to make a spark.
Could be weak battery, bad connection, too small battery cables, or a dragging starter.
Feel the cables and connections for hot spots, all the way to the starter.
Have the battery load tested. How's the charging system?
And it could be just in need of a good tune up, plugs, wires, points, anything else about the ignition system that appears to need attention. A good ignition system will give a blue hot 1/4" spark at the plug end of each plug wire to ground when cranking.
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