No Fire on a 540's
11-02-2008, 07:52 PM
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11-04-2008, 12:18 PM
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It's odd that both of them now won't fire. Were you parts swapping between motors? If so what was the last part you swapped over? Here is a pic of the old style distributor sensor, the new one style has molded in wires, and should come with a 'kit' to adapt if you have the stud style. Again this was on an HP500, pretty simple ingnition system.
11-04-2008, 01:50 PM
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It's odd that both of them now won't fire. Were you parts swapping between motors? If so what was the last part you swapped over? Here is a pic of the old style distributor sensor, the new one style has molded in wires, and should come with a 'kit' to adapt if you have the stud style. Again this was on an HP500, pretty simple ingnition system.
11-04-2008, 03:23 PM
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What is some more background on the issue? Did it just up and decide not to start one day? Batteries holding a good charge still? If you pull the coil plug off the coil, does it cross arc from the center post? Or if you have a helper you could hold the coil wire off the distributor some and see if it will arc across. Just use some insulated channel locks to hold the coil wire, it will give you a good shock. But if you aren't getting spark there, then work backwards, which it sounds like you already are.
Pictures of your setup definitely would help.
Pictures of your setup definitely would help.
11-04-2008, 03:31 PM
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11-05-2008, 07:14 AM
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You probably have checked this but I will throw it out there make sure the main harness plug on the engine is pushed on all the way and I put a hose clamp around it if there's not one now. You can use a grounded test light to check for spark at the coil center tower with the coil wire removed have someone crank it over and hold the test light a 1/4 inch from the metal connector in the coil if there is spark you may want to ohm the coil wire and also check the rotor for a hole burned through the top of it allowing the spark to go to ground.
11-10-2008, 08:15 PM
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another thing that I have seen happen on more than one occasion. sounds like with what engines you describe, you most likely have a billet camshaft(roller cam). It is possible that you have eaten up a dist. gear due to wear on a bronze gear, or you were running a steel gear that is incompatible. Make sure the rotor feels "tight" when you wiggle it. then observe it while you are cranking it over to make sure it is spinning.
