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Tractor Talk Discussion Forum

Poor Running JD 1944 Bspark plug type?

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Dan Dysinger

01-04-2004 17:34:15




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Thanks to Jeff and everyone else for the suggestions. I would prefer a hotter spark plug and definitly won't use a champion. It's a 1944 B all fuel with DLTX 34 carb and "C" type magneto. Service book calls for #8 champion and subs to champion D-21. But I don't like champion anyway and everyone else says don't use them. Comments like throw them in trash or use for ornaments etc. Tractor runs but I am unfamiliar with these 2cyl engines. An earlier posting answered my questions and I am going to let her warm up good and use proper and hopefully hotter spark plug to slightly improve starting and running when cold. If you Know type of AC or Autolite this is what I will use. Thanks and best regards, Dan

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DRL

01-05-2004 17:37:58




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 Re: Poor Running JD 1944 Bspark plug type? in reply to Dan Dysinger, 01-04-2004 17:34:15  
Autolite 388's work best for me. Also be sure to use wire core spark plug wires, not the newer type. Play havoc on mag ignitions.



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Joe (Wa)

01-05-2004 09:46:10




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 Re: Poor Running JD 1944 Bspark plug type? in reply to Dan Dysinger, 01-04-2004 17:34:15  
Farm equipment.



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buickanddeere

01-05-2004 05:42:07




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 Re: Poor Running JD 1944 Bspark plug type? in reply to Dan Dysinger, 01-04-2004 17:34:15  
It's the Champion tractor plugs that are resisitor, dual air gap or what ever are the problem. A plain boring no resisitor of any type Champion in a tractor is ok. Even a brand new spec B hardly idles on two cylinders. Didn't call them Johnny Poppers for nothing. Run them at rated rpm under load and they smooth out. Never realy hear of Johnny poppers here, just two cylinders. And the sound is usually refered to being a "putt" rather than a "pop".

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RAB

01-04-2004 23:24:06




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 Re: Poor Running JD 1944 Bspark plug type? in reply to Dan Dysinger, 01-04-2004 17:34:15  
Without starting a war on spark plugs, I, for one, am not saying don't use champions. Admittedly I don't buy many new plugs and only a limited range are available in the UK, but I have yet to have a 'disaster' with champion plugs. Usually I find at least one grade hotter is required as these old tractors are generally not worked hard enough to run properly on the standard grade recommended (when fuels were a lot different than nowadays). Also carbs were much newer and operators were more willing/able to tickle the carb settings, alter the cooling, adjust the timing etc.
Living with their tractors, they had to learn the best way to run trouble-free - or nearly so.
Modern tractor engines may be different, but this is, after all, a 'yesterdays' tractor forum.
Regards, RAB

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