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48-8N Running Rough

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Clay-8N's

08-06-2002 14:22:41




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Bought this tractor about a week ago.12 volt system.Been setting up for a year.Put new coil,points,condenser,battery,carb-kit.But still runs ruogh at all speeds.If I pull the choke out about a third of the way it smooths out.I thought about a vacuum leak and pulled the manifold off but it looked okay.Changed gaskets while I was there.Also I moved the timing screw all the way down and it seemed to help some.Thinking now maybe a stuck valve.What do you guys think???

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Clay-8N's

08-07-2002 14:26:42




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 Re: 48-8N Running Rough in reply to Clay-8N's, 08-06-2002 14:22:41  
You Guys are the best.Pulled the fuel sediment bowl completely out of the tank and it was plugged solid.Bought a new one ,put it in and it runs almost perfect.I think some new plugs and rotor cap will do the trick.Thanks ALOT!!

Clay



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Dave OH

08-07-2002 20:48:41




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 Re: Re: 48-8N Running Rough in reply to Clay-8N's, 08-07-2002 14:26:42  
Glad to hear it runs now. Don't forget the filter in the elbow on the carb.
Also I am a "Gum Out" freak.
I found that a few tanks of gas with half a bottle of "Gum Out" perks the tractor up.
Dave OH



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Dave OH

08-06-2002 21:40:09




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 Re: 48-8N Running Rough in reply to Clay-8N's, 08-06-2002 14:22:41  
Dirty fuel filters! There are three. In the fuel tank, in sediment bowl and in the elbow at the carb.
Pulling out the choke creates a higher vacuum pull from the fuel system.
Dave OH



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Wayne

08-06-2002 18:27:36




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 Re: 48-8N Running Rough in reply to Clay-8N's, 08-06-2002 14:22:41  
Run a compression check to see if the valves are working. I have had a lot of problems with sticking intake valves with the gas we have today and especially if setting awhile. Also look for a blown head gasket, not really blown but Fords warp heads regularly. Look for poor compression on adjacent cylinders. Ignition is the first place to look but you said you went over that.



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Rusty

08-06-2002 18:26:08




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 Re: 48-8N Running Rough in reply to Clay-8N's, 08-06-2002 14:22:41  
This is not going to help your tractor. But your tractor has the same symptoms mine has. Think it is a fuel problem but nothing has completly fixed it. The reason I say it is a fuel problem has to do with the choke. The tractor will not start with the choke pulled out. But the choke makes no or little changes with the tractor running. My tractor that runs good fires right up when the choke is pulled out. But dies if you pull the choke out once it is running. Maybe some of the tractor experts can help both of us.

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Dave OH

08-06-2002 21:45:52




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 Re: Re: 48-8N Running Rough in reply to Rusty, 08-06-2002 18:26:08  
The one that runs will die if you pull the choke out when it is running because you are flooding it!
Dave OH



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Rusty

08-07-2002 16:32:33




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 Re: Re: Re: 48-8N Running Rough in reply to Dave OH, 08-06-2002 21:45:52  
Thanks for that info. Must have a fuel supply problem on the one that runs with the choke pulled.



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