41 9N is 12v and I checked the air cleaner and there is no blockage. Charged battery and reinstalled and still nothing. The las t time this happened it turned out to be the breaker plate. Put in new one and it started. Breaker p[late is only a month old. Nothing is messed up in carb, just checked that. I gues she doesn"t like the cold weather.
old
Well-known Member
- Location
- Camdenton Missouri
Good spark at all 4 plugs as in it will jump a 1/4 inch gap or more??? If yes hold your hand over the air intake of the carb with the air cleaner unhooked and see if it tries to start that way. You should also gt a good suction on your hand and maybe even some gas on your hand
I recently resolved a poor spark issue. Originally, my spark only jumped about 1/8". Using 25kV/inch as a guideline, that is only ~3,000 volts.
Here was the situation: my 1945 6V Ford 2N restoration project resulting in painted surfaces which (accidentally) including the mating regions between the distributor/engine block/mounting bolts. I measured 27 ohms between the engine block and the distributor mounting plate: that"s not good.
After removing some of the paint from the contacting surfaces, it now reads 0 ohms.
A follow-up high-voltage check produced a spark jumping just over 1/2" which is about 13kV. The photo shows my bench test setup, however, I used the same "adjustable-gap spark-plug tool" on the tractor to resolve this issue.
The point is: make sure there is a good ground (or in my case, 6V positive) electrical connection between the assembled parts. We normally only focus on the wires/brass post connections; or at least I did. Hope this idea helps you!
Here was the situation: my 1945 6V Ford 2N restoration project resulting in painted surfaces which (accidentally) including the mating regions between the distributor/engine block/mounting bolts. I measured 27 ohms between the engine block and the distributor mounting plate: that"s not good.
After removing some of the paint from the contacting surfaces, it now reads 0 ohms.
A follow-up high-voltage check produced a spark jumping just over 1/2" which is about 13kV. The photo shows my bench test setup, however, I used the same "adjustable-gap spark-plug tool" on the tractor to resolve this issue.
The point is: make sure there is a good ground (or in my case, 6V positive) electrical connection between the assembled parts. We normally only focus on the wires/brass post connections; or at least I did. Hope this idea helps you!
Hec In Omaha
Member
Dave,
If you have spark at all plugs, I would say its too cold. My 49 8N wont start if it drops below freezing unless I do the following. I have to place magnetic heaters (two of them) on the intake manifold. I normally due this at least a couple of hours before I need to use the tractor. Then twenty minutes before I get on the seat I will take one of the heaters off the intake manifold and stick it on the side of the carb bowl. I know that this doesn"t sound like a good idea but it always works. Just make sure you don"t have any fuel leaks and the fuel valve is off! I do this especially after I have flooded out the engine.
Remove the carb intake hose and see if fuel runs out of it. If it does she"s flooded. The fuel vapor from the carb is probably condensing back to liquid form in the cold intake manifold. Will it even try to start using starting fluid?
Good luck
Hec
If you have spark at all plugs, I would say its too cold. My 49 8N wont start if it drops below freezing unless I do the following. I have to place magnetic heaters (two of them) on the intake manifold. I normally due this at least a couple of hours before I need to use the tractor. Then twenty minutes before I get on the seat I will take one of the heaters off the intake manifold and stick it on the side of the carb bowl. I know that this doesn"t sound like a good idea but it always works. Just make sure you don"t have any fuel leaks and the fuel valve is off! I do this especially after I have flooded out the engine.
Remove the carb intake hose and see if fuel runs out of it. If it does she"s flooded. The fuel vapor from the carb is probably condensing back to liquid form in the cold intake manifold. Will it even try to start using starting fluid?
Good luck
Hec
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