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Case Tractors Discussion Forum

darndest thing (47 Case SC)

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02-26-2008 12:31:44

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I had a forum member rebuild my intake/exhaust manifold for me last year, and the tractor sat down for a while as it was being done

When I restarted the tractor, it would not run worth a hoot.

I checked everything that I could think of, but no luck.

We finally pulled the spark plug wires one at a time and found that it was only running on 2 cylinders.

I had put new wires on it, and as a ex auto mechanic, I know how to put wires on.

ANyway, I put the wires back on and I will be darned if the crazy thing didnt start running right

I was aggravated and relieved at the same time LOL

Anyways, she runs like a champ now and I cant be happier

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Kris Golden

02-26-2008 21:19:52

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 Re: darndest thing (47 Case SC) in reply to waltham41, 02-26-2008 12:31:44  
On a related topic, I knew a fellow several years ago that was a "wheeler-dealer" and bought and sold small gas engines at old tractor shows. He was always coming up with an old two cylinder Maytag engine that had a weak coil. He would get it running on one cylinder as the coil was too weak to fire both cylinders and then remove the plug wire on the cylinder that was not firing and hold it close to the sparkplug. This would make the fire jump and somehow energize the coil enough to make it fire the plug to where it would run on both cylinders. It would run all day like that, but once shut off, that process would have to be repeated so it would fire on both. He would just leave it running and someone would buy it before the day was over. When the new owner started the engine, it would only run on one and they would come back cussing him. He"d say "it was running great when I sold it to you!" I"m not sure about now, but back then a good coil for a two cylinder Maytag cost more than a running engine!!! After he passed away, his son-n-law explained this to me and he even has an old Maytag [with a weak coil] that belonged to his father-n-law that he shows and explains to people how his wifes husband "worked them over" Maybe something like that happened to your tractor and pulling the plugwires helped the coil get fired up ?? ??

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02-27-2008 07:03:55

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 Re: darndest thing (47 Case SC) in reply to Kris Golden, 02-26-2008 21:19:52  
Kris something weird like that is what I am guessing.

Funny thing is when it was only running on 2 cylinders, it idled beautifully but as soon as you tried to put the engine under a load it just fell on its face

Now that it is running good, it doesn't idle quite as nice but pulls like a mule

go figure

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02-26-2008 20:07:39

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 Re: darndest thing (47 Case SC) in reply to waltham41, 02-26-2008 12:31:44  
You may have had a couple of stuck valves that let go when you were working on the wires. Running it even missing can warm it up enough to make stuck parts work again. Good luck.

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J Heitkemper

02-26-2008 19:12:35

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 Re: darndest thing (47 Case SC) in reply to waltham41, 02-26-2008 12:31:44  
Guess You had plug Wires hooked up wrong, <> If not ,Are You sure the Manifold is not cracked ?..keep Us posted ,, I will bet that She will go to Missing again,.. Til We found out Our manifold was Bad , One of my sc Missed So bad I told My son to paint the durn thing GREEN AND YELLOW

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02-26-2008 19:51:07

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 Re: darndest thing (47 Case SC) in reply to J Heitkemper, 02-26-2008 19:12:35  
I had the wires marked and they were on correctly. I dont know what I did, but something in taking the cap off, and hooking the wires back up made a connection that was not quite there before.

This is one of those scratch my head, and just accept that its working now and go on instances.

I hope it keeps running ok, like I said it has good oil pressure and all but one of the cylinders had 110 psi when I checked the compression, and the low one had 90 psi so I cant fuss too bad.

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Walt Davies

02-26-2008 17:07:34

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 Re: darndest thing (47 Case SC) in reply to waltham41, 02-26-2008 12:31:44  
Reminds me of the time that I was tuning a big 500 CID 6 on a truck. I pulled the wires off and the cap and then proceeded to put in new points, condenser, spark plugs and wires. when I turned it over to start there was huge bang out the 4" exhaust. The last guy had put the thing together 180 out and then timed it to run BUMMER.

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02-26-2008 18:36:00

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 Re: darndest thing (47 Case SC) in reply to Walt Davies, 02-26-2008 17:07:34  
Walt I hope it didnt hurt the motor too bad.

I have tore down motors and found sockets and extensions in the oil pan where people working on or rebuilding the motors dropped them and said to heck with it and left them.

I did it once and pulled the pan off to get my socket back :)

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