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Ford 9N, 2N & 8N Discussion Forum
Show Parts for Model:

Re: 8N runs rough after warming up

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Adam Brandt

03-07-2013 06:37:21
207.173.231.114



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So I have done the following to troubleshoot the issue. I removed the carburetor, fuel line, reservoir bowl and cleaned everything. The Carburetor was extremely clean - no gunk at all in it. The filters were a bit dirty. I also removed the air filter and hose assembly and ran the tractor without it, and it seemed to run great. I did notice after some time that in the clear fuel filter I have the gas would flow fine for the first few minutes, then it would drip into the filter. I dont think it is getting enough gas. Again, it will run for about 10-15 minutes then it will act like it is starving for fuel - I pull the choke out it will run for a few more seconds then dies. I have the fuel turned on all the way, so it should be getting fuel from the tank. I drained the tank and refilled it, when I drained the tank it didnt look like any large particles drained out with the gas into the collection container. I also replaced the spark plug wires with a new set of copper core ones as I did notice that a few were a bit cracked and when I ran my hand across one of them I could feel electrical shock. The ends of the spark plug wires that run into the distributor were quite dirty and 2 of them were split down the middle. When the tractor runs now it runs very well and has more power - but it will still die after 10 minutes of use. Any further ideas on what to check next?

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GB in MT.

03-07-2013 07:24:33
216.47.61.196



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 Re: 8N runs rough after warming up in reply to Adam Brandt, 03-07-2013 06:37:21  


Adam;

You say......:I did notice after some time that in the clear fuel filter I have the gas would flow fine for the first few minutes, then it would drip into the filter. I dont think it is getting enough gas. Again, it will run for about 10-15 minutes then it will act like it is starving for fuel - I pull the choke out it will run for a few more seconds then dies. I have the fuel turned on all the way, so it should be getting fuel from the tank. I drained the tank and refilled it, when I drained the tank it didnt look like any large particles drained out with the gas into the collection container. end quote!

You are right ......you do have a fuel restriction problem.!!!!

Could be in any filter, BUT my guess is......"running the fuel wide open" (which tells me that you are trying to run off the 'Reserve' section of the sed. bowl), and the reserve passage in the sed bowl is plugged up, not letting enough fuel get to the carb bowl, to run the engine!!!

Thus the 10-15 mins of run time you have stated.

MY ? would be/is.....How did you flush out/drain the tank.....through the sed bowl,...OR with the sed bowl out of the tank??????

Next.....Only open the fuel valve at the sed. bowl two full turns, then start the engine after waiting for the carb bowl to fill!!!

If that extends yer run time and or fixes yer problem,....then you have found your run-time problem........(Sed. bowl screens are plugged inside the tank!!!!!)

Just my WAG!!!!!!

Gary :roll:

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ShowMEguy

03-07-2013 06:43:20
168.215.10.102



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 Re: 8N runs rough after warming up in reply to Adam Brandt, 03-07-2013 06:37:21  
After the 10 mins have you tried to see if the igintion switch is working? By using a jumper wire across your terminal block? if that didn't narrow it down I'd probably toss in a new condenser... As I don't know of a way to really test one of those...
This post was edited by ShowMEguy at 06:44:15 03/07/13.



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