2020 firing problem

mb58

Member
My 2020 shows fire all the way to the coil, but I have no spark at any of the plugs. What should I change? Plugs? Rotor? Points and condenser?
 
If you have fire out of coil wire, the points and condenser are most likely fine. Rotor, cap and wires would be only thing between coil wire and spark plugs. If cap does no show a trace replace rotor. Make sure rotor is engaged on flat spot / notch on shaft and push clear down on shaft and not slipping on shaft?? DW
 

You say it has "fire all the way to the coil". Depending on what you mean by that, the correct answer to help you will be different. Does you mean you have confirmed 12 volt primary power to the small primary terminal on the coil, or does it mean you get a spark out of the coil wire if you hold the distributor end of the wire close to the block when cranking the engine over.

Is this something that just happened on a running tractor you have had a while and been using? Or is it something you just got? Has it been setting a while?
 
If there's good fire out the coils top HV tower but none to any plugs, I suspect the distributor cap (insure its down in place correct, no moisture or cracks) or the rotor (insure its good and in place and isn't shorted out to the shaft) or the coil wire from coil to cap is bad. If the points or condensor or coil were bad the coil wouldn't be firing.

John T
 

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