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Case Tractors Discussion Forum
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allis b firing on one STILL

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gary case

12-12-2006 12:56:26




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well i took care of the manifold leaks with cleanig and a new gasket. it only will run on #3 or #4 some times just # 3. i've pulled the mag and retimed it twice,to the motor and the points,checked cap,rotor,points,wiring,new plugs. it started messing up a little bit before i parked in the garage. let sit for 1 or 2 months. went to start it and had trouble ever since. it starts right up and sounds like a (excuse me)a john deere. it just doesn't make sence. i didn't check comp. and i didn't check if a sticky valve. think the mag just got bad? help please.

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gary case

12-13-2006 16:25:34




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 Re: allis b firing on one STILL in reply to gary case, 12-12-2006 12:56:26  
thanx, yes i checked the firing order so many times, even took the book to the plug wires thinking, "you know i'm in my 50's now could be seeing backwards or something". BUT, i think it's got to be electrical. i'm ready to go see a friend about borrowing a mag. that'll eliminate that. i learned that in the Army. just keep replacing parts, it's got to get better. only there you didn't have a budget. i'll get her though,and i'll get back to you's thanx again gary

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C. Amick

12-13-2006 09:30:38




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 Re: allis b firing on one STILL in reply to gary case, 12-12-2006 12:56:26  
Sometimes even new condensers are bad right out of the box. Have you attached a spark plug to each wire and grounded the plug against the block to make sure each plug is firing? You don't have some bent push rods do you? and it's Okay if your an AC guy.



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gary case

12-13-2006 09:26:07




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 Re: allis b firing on one STILL in reply to gary case, 12-12-2006 12:56:26  
thanx men, i changed the wires that were on it when it ran great,no change. i took the rotor cap off and i was off on lining up the two gears,so i fixed that. so, now it's hitting on #1 instead of #3 or #4. i can take all but the #1 plug wire and it still sits there and runs. i've got new points,condencer,coming,i hope soon. then i'll start all over again. this is what happens when you don't want all these extra parts sitting around and sell e'm. for sure your going to need a mag,carb,starter one of these day's.

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BCnT

12-13-2006 08:16:25




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 Re: allis b firing on one STILL in reply to gary case, 12-12-2006 12:56:26  
replace the condensor and if it has carbon wires replace them with COPPER WIRE's



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mike's600

12-13-2006 04:27:05




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 Re: allis b firing on one STILL in reply to gary case, 12-12-2006 12:56:26  
I have the same problem,new head, mag,and carb.I got another head to try. There may be a crack in the intake portion of the head between 3 @ 4 cly.
May not get any gas to fire. I had spark compression, but no gas. Sounds crazy still working on the problem.



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gary case

12-13-2006 06:33:07




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 Re: allis b firing on one STILL in reply to mike's600, 12-13-2006 04:27:05  
sorry i guess i didn't switch back to the allis discussion forum. but anyways i'm getting plenty of gas to the othe cyl's the one hitting is dry but carboned up. i even let it run throttled up for a short thinking it would burn excess gas out, but still nothing. i took my mag in last night to warm and dry thinking it might have a crack or something, well going out now to put it back on. will follow up on results. i sure don't want to do as much work as you did. i wish now i would have not sold my other mags,starter,and carbs. there good just to have on site to change to try to eliminate some problems.

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mike's600

12-13-2006 15:19:36




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 Re: allis b firing on one STILL in reply to gary case, 12-13-2006 06:33:07  
The bad thing is we got the tractor stuck, got it running, but would not fire on number three. I figured it needed a rebuid. one rebuilt engine,same problem as before.Hope you figure it out



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Gene Dotson

12-12-2006 13:37:18




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 Re: allis b firing on one STILL in reply to gary case, 12-12-2006 12:56:26  
Gary;
Are you certain you are using the right firing order? Tt is a right hand rotation and the firing order is 1-2-4-3. Many confuse AC with the standard firing order of 1-3-4-2... Gene



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