It was the ignition coil.
Had to replace the coil last fall (cracked high voltage tower). It had a generic-type coil installed. I wanted the tractor as OEM as possible. So I purchased one of the original-type coils (that have the 12 volt terminals opposite the high voltage terminal), from a company that sells restoration parts. They claimed that the coil "meets or exceeds IH OEM specifications".
Took the coil in to my IH dealer today and they tested it. It was only putting out 1/2 the voltage it should have. That explains why it missed under load. It was putting out enough during idle/light load, but didn't have the juice apparently to fire a heavy load mixture.
The "OEM" coil was made by a company that produced a lot of OEM-type IH parts for older tractors. I've noticed that their website disappeared from the Internet earlier this year. Why is it that companies put out substandard parts---especially when they claim to cater to the restoration market?
Had to replace the coil last fall (cracked high voltage tower). It had a generic-type coil installed. I wanted the tractor as OEM as possible. So I purchased one of the original-type coils (that have the 12 volt terminals opposite the high voltage terminal), from a company that sells restoration parts. They claimed that the coil "meets or exceeds IH OEM specifications".
Took the coil in to my IH dealer today and they tested it. It was only putting out 1/2 the voltage it should have. That explains why it missed under load. It was putting out enough during idle/light load, but didn't have the juice apparently to fire a heavy load mixture.
The "OEM" coil was made by a company that produced a lot of OEM-type IH parts for older tractors. I've noticed that their website disappeared from the Internet earlier this year. Why is it that companies put out substandard parts---especially when they claim to cater to the restoration market?
