8n tractor runs good at first then after awhile starts to sputte

check your push button starter make sure it is working,or my be the points may be stuck

The problem is the carburetor is not being choked. This tractor most likely has a manual choke. Do you see a knob which you would pull to choke the carburetor ?

Are you pulling the knob when you crank the engine ? If you are pulling knob and the engine doesn't start, the choke most likley has a broken or disconnected cable.

Charlie

warms up/dies will not start

I run one number hotter plugs in my N tractors as they tend to foul plugs.
Glad it was a simple fix.

can u send the license key for 355664007645462 this will be help from u

Verify the point gap is set right and that you are getting a good spark. Check to see if you are getting fuel to the carb.

John

It sounds like the conversion was more trouble than it was worth. I won't claim to have the solution to your problem having never worked on an 8N, but I was wondering about the capacity of the points and condenser in the distributor. If the condenser is not 12 V also, it might be causing the points to melt which would keep from getting a spark at the plugs. Check the condenser for voltage rating and also check if you are getting a spark at the plugs by unscrewing a plug, reconnecting the high tension lead, and hold the edge of the plug against the block while cranking using thick leather gloves, insulated pliers, rubber, or other non-conductive material to keep from getting shocked.

This sounds like a bad fuel pump to me. The only way to be sure is to check the fuel pressure when cold, probably around 45 PSI. Then when it get hot it will drop way down to 10 or 15 PSI. Check the pressure if you can, or change the fuel pump.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Not likely, if the battery is any good you should get several hours of run time before it dies. More likely low oil pressure cut off switch, check level or change oil if it's been awile. Or possibly an overheat cuttoff swith, check airlow and coolant if it has a radiator.

well mine is the same way but all old traktors r like that