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Discussion Forum

Re: Super C.... Fouling Plugs

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Les Repair

09-24-2001 17:57:28

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If you don't pull the tractor very much there are also D23 plugs. These are pretty hot, but they will work. Your parts store will probably tell you there is no such thing, but there is.

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Jere Hummelgaard

09-25-2001 03:03:05

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 Re: Re: Super C.... Fouling Plugs in reply to Les Repair, 09-24-2001 17:57:28  
My Dad's Super C had the same problem. Hydraulic fluid was also disapearing. He gained oil in the crankcase (A LOT)! The seal on the gear shaft of the hydraulic pump was leaking, the crankcase would over fill by as much as 1 gallon and build up pressure enough to blow hydraulic fluid past the piston rings (weak rings) and foul the plugs. I replaced the seal and all the problems including the fouling plugs have gone away.

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09-25-2001 06:26:35

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 Re: Re: Re: Super C.... Fouling Plugs in reply to Jere Hummelgaard, 09-25-2001 03:03:05  
The fouling of the plugs, is a dry soot type foul. There is no apparent wet type oil deposit. I am going to install the hotter plugs today, I found D-21's, no D-23 available locally. I will post progress. It seems that this problem is pretty common. I forgot to add that the engine has been converted to 12v. I have also installed new ignition wires.

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09-25-2001 14:25:05

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 Re: Re: Re: Re: Super C.... Fouling Plugs in reply to Mark, 09-25-2001 06:26:35  
Changed out plugs, using D-21's. tractor runs a lot better. Exhaust still has some black "rich" smelling smoke. I tried to adjust idle screw, but it seems to still produce black smoke no matter how much I screw it in? Checking the plugs, they have some black soot on no.'s 2-3 & now 4. Like I said, it runs a lot better, but will only be a matter of time until these plugs foul??

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J.D. Humm

09-27-2001 15:00:03

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 Re: Re: Re: Re: Re: Super C.... Fouling Plugs in reply to Mark, 09-25-2001 14:25:05  
We used to farm with gas powered IH tractors in the 60's. Really didn't have fouling trouble back then. I think the reason was we actually pulled those tractors hard and the higher engine temperatures prevented plug fouling. Of course if you needed a ring job they would foul anyway. Seems like when the big diesels took over and our gas tractors went to lighter duty is when we started having plugs foul frequently. Heck we even used to plow with Super C's and never had plug trouble. For some reason it seems the 6volt Super C we have runs better than the 2 12v Super C's we have. It also starts just as easy if not easier. Thinking of switching the other 2 back. If everything is in good shape a 6 volt system will start the tractor ok, even in cold weather.

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