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Ford 9n

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junderhill123

New User
I have a ford 9n, it has an after market carb and ran well but has
been parked for probably a year. Last time it ran good but after
putting any sort of load on it for more then 30 minutes it would
shut off, so I parked it and now a year later, have plans on
getting it running again. I put new plugs and wires on and have
good spark on all 4. I drained the gas and put new gas in it and
am getting gas to the carb, if I pull bolt out of the bottom it will
run steady. But the tractor will not start. What is the next step?
 
The needle and seat is bad and or float is full of gas. Just trash that aftmk paper weight carburetor and get a Marvel Schebler carburetor. This site sells them, ebay has them too.
 
It's NOT a fuel issue, it's electrical. Your battery is likely dead if you have letting tractor set not running for a week or longer without having a float charger attached. Yank it and take to a local ALT/GEN Shop to be tested. While it's out, go thru entire wiring system using you Manuals and documents. Is it 6V/POS GRN or have gone over to the 12V dark side? Either way, if system is not wired correctly you will continue to have non-starting issues. There are but 1 or 2 correct ways to wire and a hundred incorrect ways. Know which is right.


Tim Daley (MI)
 
Not enough diagnostics to make a claim yet. Spark to all 4 cylinder sounds good. Fuel into carb sounds good, ....but is fuel getting into cylinders? Too much fuel, flooding & drowning plugs in liquid gasoline? Not any atomized gas into cylinder? Try a light shot of starting fluid at air intake. They will run on vapor from propane torch, too. Over a long period insects such a dirt dobbers can clog an air passage/cleaner....maybe remove the hose between air intake and carb. Is gas dripping out of bottom of carb when you try to start it? Have you tried with zero or little choke?
 
The cylinders are all dry, not getting anything on the plugs at all.
And I have tried starting with little to no choke at all same
results.
 
I actually have two marvels that need rebuilt. Is this something pretty simple to do yourself or do I need to send it off somewhere?
 
See if it will run on starting fluid or propane before condemning carb. You don't know if it is a carb problem, yet.
 
(quoted from post at 07:44:18 06/01/23) See if it will run on starting fluid or propane before condemning carb. You don't know if it is a carb problem, yet.
Click to expand...

If it still won't start with starting fluid etc. Hold you hand over the intake and feel for good vacuum.
 
(quoted from post at 11:36:00 06/01/23) I actually have two marvels that need rebuilt. Is this something pretty simple to do yourself or do I need to send it off somewhere?
Click to expand...

simple.
 
Tim, I went over the electrical this evening. I have 5.9 volts from the top of the coil to the resistor. Everything else I tested has good readings.
 
(quoted from post at 19:28:26 06/01/23) Tim, I went over the electrical this evening. I have 5.9 volts from the top of the coil to the resistor. Everything else I tested has good readings.
Click to expand...
ou said that you had good spark at all 4, so you ought to forget the voltage measurements. Clearly you don't have both good spark AND 5.9 v from top of coil to resistor as that is nothing but a wire! You can't have both.
 
5.9V static on a 6V battery is a severely depleted battery. Take battery to a GEN/ALT shop and have it tested on their machine. Bad? Invest in good brand new one - DEKA/INTERSTATE/EXIDE/DURACELL are typical. Bargain house brands like from tsc, wally-world, k-mart, bob's batteries R us auto-world usually have poor life spans.


Tim Daley (MI)
 
(quoted from post at 07:34:45 06/01/23) It is a 12v system, I have went through all of it and everything seems to be wired correctly.
Click to expand...

OK, it is converted to 12V that SEEMS to be wired correctly.

A non starting tractor needs a few accurate tests to begin troubleshooting, not SEEMS like tests.
You say it has spark, how did you check? Will it jump a 1/4" gap on a spark tester?
You say you removed the "bolt" which should be a pipe plug on the bottom of the carburetor and it runs steady. How long to fill a pint jar?
 
(quoted from post at 11:18:34 06/02/23)
(quoted from post at 07:34:45 06/01/23) It is a 12v system, I have went through all of it and everything seems to be wired correctly.
Click to expand...

OK, it is converted to 12V that SEEMS to be wired correctly.

A non starting tractor needs a few accurate tests to begin troubleshooting, not SEEMS like tests.
You say it has spark, how did you check? Will it jump a 1/4" gap on a spark tester?
You say you removed the "bolt" which should be a pipe plug on the bottom of the carburetor and it runs steady. How long to fill a pint jar?
Click to expand...
.............and, what in the world does he mean by this statement??!!
"I have 5.9 volts from the top of the coil to the resistor."
 
(quoted from post at 07:34:45 06/01/23) It is a 12v system, I have went through all of it and everything seems to be wired correctly.
Click to expand...
I didn't understand the 5.9V either but I saw the 12V system mentioned.
 
(quoted from post at 11:07:03 06/03/23)
(quoted from post at 07:34:45 06/01/23) It is a 12v system, I have went through all of it and everything seems to be wired correctly.
Click to expand...
I didn't understand the 5.9V either but I saw the 12V system mentioned.
Click to expand...

i'm guessing with points closed. clarification is underrated :)
 
(quoted from post at 07:34:45 06/01/23) It is a 12v system, I have went through all of it and everything seems to be wired correctly.
Click to expand...

So, 12 volt system with 1/2 the power from the 12 volt (are you sure?) battery. No wonder she aint-a firing off.

If you have a 12 Volt, Neg ground system in the 9N, with a 12 Volt battery that's only putting out 1/2 the power then try this:

Unhook the weak battery from the tractor.
Pull your Daily Driver next to the old girl and carefully jump her from the not running daily driver's battery.
That should turn the Old Girl over with a GOOD 12 Volt battery spliced in from the daily driver.
If she runs well then shut everything down and go to your favorite car parts store to actually check it first before probably replacing it - or - try charging the low battery for a few minutes (say 20 or so) from the daily driver's charging system. If the low battery revives you're Golden.
 
We haven't heard from junderhill123 since June 1st. I'm thinking he got it running and isn't coming back.
 
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