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2N engine questions/hard to start/missing on one cyl

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rd99

07-29-2007 14:27:36




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I need some help diagnosing these problems. Needing starter fluid to start for the first time, and an occasional mis-fire.

A week ago my grandfather went out with me and we started up the 2N which hadn't been started in about 15 years.

The only thing we needed to do was adjust the gap in the distributor since there wasn't any gap.

After that it started up with the help of some starting fluid.

For a bit it sounded like it wasn't firing on one of cylinders, but then that cleared up. (It did that on it's own we didn't do anything to it)

In the last week the tractor has been running for about 5 hours total time. In the mornings I've had to use starter fluid to get it going, but after that I could turn the tractor off and it would start without any starter fluid help.

Yesterday I went over and loaded the tractor and 3 implements on a trailer to haul to my house. Right at the end it sounded like it was misfiring again on one cylinder occasionally.

I towed it home yesterday, it got rained on during the trip.

After we got home I attempted to start the tractor on the trailer and it wouldn't start.

I took out a plug and didn't see any spark. I took out another plug and I did see a spark but it wasn't sparking on every 4th cycle like it should. The plugs were really fouled looking and were pretty old.

Today I went and got a set of new HC-12 spark plugs and gapped them to .025 and put them in. And it again started with the help of some starting fluid. But it still sounds like it's occasionally missing on one cylinder.

Thanks

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Sean (TX)

07-30-2007 17:00:47




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to Dunk, 07-29-2007 14:27:36  
Automotive automatic transmision fluid



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rd99

07-30-2007 16:17:29




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to Tom N MS, 07-29-2007 14:27:36  

old said: (quoted from post at 21:56:58 07/29/07) ... Also tranny fluid cleans up rust, and other crude that maybe in the engine and thats why it helps with the rings and the valves. On some engines I fill the cylinders with tranny fluid and also fill the exhaust manifold but on the N series you can't do that.


What type of transmission fluid should I use? The GL-1 or something else?

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rd99

07-29-2007 17:18:46




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to arthur ward, 07-29-2007 14:27:36  

Dunk said: (quoted from post at 20:10:00 07/29/07) The miss is probably a sticky valve, the tranny fluid may possibly help that, also running it may help that after the tranny fluid.

It may also be a crudded up carb, a bad wire, or more things.


Thanks for the help.

I'll report back after I do the tranny fluid method.

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rd99

07-29-2007 16:59:44




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to Wasgd4u, 07-29-2007 14:27:36  

old said: (quoted from post at 17:40:35 07/29/07) Sitting that long it probably has rings that are stuck to the pistons so its low on compression and thats why you need the starter fluid to get it going. I would pour in about a 1/2 cup of tranny fluid in each cylinder and let it sit a day or 2. Be sure to put the plugs back in finger tight to keep dirt etc. out of the cylinders. Then after a day or 2 pull the plugs and turn the engine over to clear out the tranny fluid and then try to start it.


Thanks for the help.

Do you think that might also be why it's occasionally not firing on one or a couple of cylinders? It seems to want to miss on a lower RPM more than on a higher RPM, though it does still miss a little on higher RPM.

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old

07-29-2007 18:56:58




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to rd99, 07-29-2007 16:59:44  
Well think about it lower RPM means less speed to build up higher compression so yes sticking rings will cause that. Plus at high RPM your oil pressure is up higher and that oil helps fill in the gaps from sticking rings so yep makes since doesn't it. Also tranny fluid cleans up rust, and other crude that maybe in the engine and thats why it helps with the rings and the valves. On some engines I fill the cylinders with tranny fluid and also fill the exhaust manifold but on the N series you can't do that.

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Dunk

07-29-2007 17:10:00




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to rd99, 07-29-2007 16:59:44  
The miss is probably a sticky valve, the tranny fluid may possibly help that, also running it may help that after the tranny fluid.

It may also be a crudded up carb, a bad wire, or more things.



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rd99

07-29-2007 16:54:58




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to gahorN, 07-29-2007 14:27:36  

ZANE said: (quoted from post at 19:05:45 07/29/07) Old points distributors don't like moisture. Not at all!



I was thinking that was part of the problem, it was a pretty hard rain for a bit while I was towing it.

I'll probably be getting in touch with you soon for a zane thang, once I get the engine running well and look at a few other things on it.

I'll need to look at the hydraulics. When I lift it's a little choppy, not a smooth motion like going down is.

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ZANE

07-29-2007 16:05:45




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to rd99, 07-29-2007 14:27:36  
Old points distributors don't like moisture. Not at all!

Several ways to dry it out. Best is pure oxygen blown into the distributor. Especially the distributor cap. Of course without the engine running!

Brake cleaner is good too to dry up the distributor if it is wet.

WD 40 can be used outside the distributor to dry the cap but don't use it inside the distributor. Poings don't tolerate any oil residure.

Zane

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old

07-29-2007 14:40:35




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 Re: 2N engine questions/hard to start/missing on one cyl in reply to rd99, 07-29-2007 14:27:36  
Sitting that long it probably has rings that are stuck to the pistons so its low on compression and thats why you need the starter fluid to get it going. I would pour in about a 1/2 cup of tranny fluid in each cylinder and let it sit a day or 2. Be sure to put the plugs back in finger tight to keep dirt etc. out of the cylinders. Then after a day or 2 pull the plugs and turn the engine over to clear out the tranny fluid and then try to start it. Also the plug you may want to try is the auto light 437 people say they are better then the champs are.

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