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

2N troubles

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Res133cue

07-17-2014 11:40:01
173.88.122.137



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Seems as I get one thing straightened out another problem pops up. So here is my situation now. Starts fine and runs good for about 20 minutes running my finish mower. After that it seems to loose HP and starts to sputter. It will still run and mow decent in reverse at this point. Once. Shut off the PTO it will run and drive ok for a while before the sputtering starts with no load. Have good fuel and spark is good cold and coil is new. I observed the flywheel today and it spins fine cold, I did notice once it starts to sputter under load the flywheel turns out of balance. Once the PTO is off it turns true again. Also when the sputtering it appears that exhaust is coming back through the intake pipe. So my question is have I lost a bearing that is causing the crank to wobble and an exhaust valve to remain open? Is it just a valve sticking? Any other ideas I may have missed?

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HCooke

07-17-2014 15:24:58
70.195.64.132



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 Re: 2N troubles in reply to Res133cue, 07-17-2014 11:40:01  
I'm with Bruce, it's either a fuel problem or a spark problem. What does the spark look like when it starts to run rough? Also, is this 6 volt or a 12 volt conversion? What is the intake pipe? And how can you see the flywheel?



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Bruce (VA)

07-17-2014 12:26:54
24.125.183.11



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 Re: 2N troubles in reply to Res133cue, 07-17-2014 11:40:01  
" have I lost a bearing that is causing the crank to wobble and an exhaust valve to remain open? Is it just a valve sticking?"

If you lost a bearing that caused the crank to wobble, that engine would continue to run for about 2 seconds.

And valves don't stick open after the engine heats up.

" Have good fuel and spark is good cold and coil is new."

That's probably not the case.

Did you check for fuel and spark as soon as it started to stumble? Not five minutes later, but immediately?

Tell us exactly how you checked for fuel & spark.

It's easy to over-think these problems......90% of them turn out to be simple fuel or spark issues.

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Res133cue

07-17-2014 13:21:41
173.88.122.137



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 Re: 2N troubles in reply to Bruce (VA), 07-17-2014 12:26:54  
Checked fuel by removing the drain plug on the bottom of the carb. Checked for spark with my inline spark checker. When it starts to stumble air is going in the intake and what smells like exhaust is blowing out of it.



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Bruce(VA)

07-17-2014 14:47:55
24.125.183.11



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 Re: 2N troubles in reply to Res133cue, 07-17-2014 13:21:41  
Did you check spark and fuel as soon as it began to stumble?



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Res133cue

07-20-2014 10:48:03
173.88.122.137



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 Re: 2N troubles in reply to Bruce(VA), 07-17-2014 14:47:55  
So on start up it has a strong regular spark to all the plugs. Once it starts to stumble the spark is still strong but not regular any more. I was only able to check 3&4 but I figure 1&2 must be doing it as well. So condenser, points or coil? The coil is brand new out of the box back in May. The distributor cover and rotor button are brand new last month. I have a video but I am not sure how to attach it to this post.

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Bruce (VA)

07-20-2014 10:57:22
24.125.183.11



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 Re: 2N troubles in reply to Res133cue, 07-20-2014 10:48:03  
As Harold asked........

Is the tractor 6v or 12v?

" So condenser, points or coil?"

In order of probability:

1. Ignition switch

2. Points

3. Condenser

4. Loose/corroded bad wiring

5. coil

Jump the ignition switch & see what happens. If that doesn't work, time for new points & a condenser.

" The coil is brand new out of the box back in May. The distributor cover and rotor button are brand new last month. "

So.......you replaced the parts least likely to fail (coil, cap & rotor) and ignored the points? Or did they look ok? Did you check the gap?

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