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Farmall & IHC Tractors Discussion Forum
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460 Gas runs rough

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Greg J

03-22-2004 09:16:21




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I have a 460 that just started running rough. The last plug (toward the steering wheel) seems to be the culprit. When I take the plug wire off, the engine runs the same. There is spark when I hold the wire near ground.

What size sparkplug socket does it take to get the plugs out? I have several but none fit.

Also what plugs should go in this thing. I've had the tractor for 17 years and it has always run great. The nearest IH dealer who has serviced the tractor has gone out of business.

Besides the plugs what else could cause this? This is in S. Iowa

The tractor will run under load with the choke partially pulled out, but with reduced power. It would not pull a 10ft disk fully in the ground saturday.

Any help would be appreciated.

Greg

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Greg Johnston

03-24-2004 08:08:36




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 Re: 460 Gas runs rough in reply to Greg J, 03-22-2004 09:16:21  
Thank you for the suggestions. I appreciate it.

greg



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Joe Evans

03-22-2004 11:24:28




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 Re: 460 Gas runs rough in reply to Greg J, 03-22-2004 09:16:21  
We have found that Autolite and AC plugs perform better than Champions do in an older tractor's lower voltage ignition system. Try these.



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r4etired

03-22-2004 19:21:41




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 Re: Re: 460 Gas runs rough in reply to Joe Evans, 03-22-2004 11:24:28  
Check compression, They were bad for burning valves, also try a Champion D-21 in that hole



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Aces

03-22-2004 10:21:05




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 Re: 460 Gas runs rough in reply to Greg J, 03-22-2004 09:16:21  
Greg you need a 7/8" deep socket with a thin wall so with todays sockets you may have to grind the out side of the socket to get it on the plug I only found on the would fit with out grinding and that one is 40 years old a sears and the newer ones did not fit. You need a plug like a D18Y



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