Sorry for the long message!
Basic specs.
Farmall Super H # 20241J I was told it was manufactured in 52
Converted to propane many years ago
Converted to 12 volt approx. 15 years ago
Used for mowing (tow behind one row shredder) on 100 acre wildlife management property ? no heavy work.
Converted to electronic ignition PerTronix Ignitor approx. 2 years ago
Problem History
Electronic ignition worked great until Sept 2016 (approx. 20 months). After mowing for approx.. 3 hours in 100 degree temp. the engine stopped. No splutter, no backfire, no misfire, it just quit running. After sitting for several hours (cool down), I was able to start it and get it back in the barn. I could not start it again after that. Spoke with PerTrtronix tech support RE electronic ignition. At their recommendation I ran a bunch of tests to determine if ground was good etc. They replaced the ignition module under warranty (I was surprised at that ? they have been very helpful). Put in the new module and the tractor worked perfectly first time. In Feb 2017 (4+ months on the new module), again after mowing for 3-4 hours at about 70 degrees, the tractor did the same thing i.e. quit without a stutter. At that point I put on new plugs, wires, cap, and rotor. After that, tractor ran very poorly constantly misfiring for about 10 minutes with barely enough power to move it in low gear. It then stopped and would not start again. Double checked new sparkplug wires for contact and firing order ? everything OK. After talking to PerTronix tech support, they gave me a much more exhaustive set of tests including a bench test of the module. The tractor passed all of the ground continuity, coil resistance, and other tests. Bench test of the module showed intermittent voltage drop (it should drop four times a revolution). Intermittent voltage drop would be consistent with the occasional ?pop? I would get trying to start the tractor. Got another new module but this time when I put it on the tractor did not start. Tried two other spark coils (one new one) and no start. Currently a spark tester inserted in the coil shows a good spark from the coil when the ignition switch is turned on and when it is turned off, which to me shows the coil is good. When the engine is cranked there is a very weak spark from the coil when cranking starts and when it stops. There is no sparking during cranking. The spark tester shows no hint of a spark at any of the plug wires.
Fuel system seems Ok. Won?t start even with starter spray.
I am at my wits end. I pulled the distributor thinking to reconvert it to breaker points but thought I would post on this forum first. I will probably also have to post again when I try to get the timing right ? I was expecting a distributor shaft with a key mechanism for orientation and instead it is a continuous gear. A Kubota is starting to look good!
Thanks in advance for any help.
Basic specs.
Farmall Super H # 20241J I was told it was manufactured in 52
Converted to propane many years ago
Converted to 12 volt approx. 15 years ago
Used for mowing (tow behind one row shredder) on 100 acre wildlife management property ? no heavy work.
Converted to electronic ignition PerTronix Ignitor approx. 2 years ago
Problem History
Electronic ignition worked great until Sept 2016 (approx. 20 months). After mowing for approx.. 3 hours in 100 degree temp. the engine stopped. No splutter, no backfire, no misfire, it just quit running. After sitting for several hours (cool down), I was able to start it and get it back in the barn. I could not start it again after that. Spoke with PerTrtronix tech support RE electronic ignition. At their recommendation I ran a bunch of tests to determine if ground was good etc. They replaced the ignition module under warranty (I was surprised at that ? they have been very helpful). Put in the new module and the tractor worked perfectly first time. In Feb 2017 (4+ months on the new module), again after mowing for 3-4 hours at about 70 degrees, the tractor did the same thing i.e. quit without a stutter. At that point I put on new plugs, wires, cap, and rotor. After that, tractor ran very poorly constantly misfiring for about 10 minutes with barely enough power to move it in low gear. It then stopped and would not start again. Double checked new sparkplug wires for contact and firing order ? everything OK. After talking to PerTronix tech support, they gave me a much more exhaustive set of tests including a bench test of the module. The tractor passed all of the ground continuity, coil resistance, and other tests. Bench test of the module showed intermittent voltage drop (it should drop four times a revolution). Intermittent voltage drop would be consistent with the occasional ?pop? I would get trying to start the tractor. Got another new module but this time when I put it on the tractor did not start. Tried two other spark coils (one new one) and no start. Currently a spark tester inserted in the coil shows a good spark from the coil when the ignition switch is turned on and when it is turned off, which to me shows the coil is good. When the engine is cranked there is a very weak spark from the coil when cranking starts and when it stops. There is no sparking during cranking. The spark tester shows no hint of a spark at any of the plug wires.
Fuel system seems Ok. Won?t start even with starter spray.
I am at my wits end. I pulled the distributor thinking to reconvert it to breaker points but thought I would post on this forum first. I will probably also have to post again when I try to get the timing right ? I was expecting a distributor shaft with a key mechanism for orientation and instead it is a continuous gear. A Kubota is starting to look good!
Thanks in advance for any help.