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Farmall & IHC Tractors Discussion Forum
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1971-444 gas starts cold / dies after about 1/2 hr

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Farmalfamily

03-10-2007 16:56:40




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I have replaced the dist coil a couple of times - runs great at first.
I even changed position from horizontial to vertical - (early coils got hot and lost cooling oil via coil wire connection).
New points, condenser, cap, wires, plugs twice, and rotor.
I do not suspect carb. - when runnig it is strong.
when cold starts great.
Any help is appreciated.
Thanks BBB




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Owen Aaland

03-10-2007 19:04:58




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 Re: 1971-444 gas starts cold / dies after about 1/ in reply to Farmalfamily, 03-10-2007 16:56:40  
The coil on your 444 should be a 6 volt coil. There is no external resistor so it looks like it should be a 12 volt but unless someone has changed the wiring harness that is not the case. The resister is actually the wire that runs between the ignition switch and the I terminal on the solenoid. This wire is a steel stranded wire, not copper. Withn the tractor running there should be about 6 volts at the solenoid terminal.

The only IH tractors I have seen that use a 12 volt coil are Cub Cadets and those with electronic ignition instead of points.

If the ignition wire goes from the switch to the coil and then to the solenoid you need an external resistor. If the ignition wire goes from the switch to the solenoid and then to the coil there should be a steel wire in the harness between the switch and the solenoid and no external resistor is used.

One problem with this design is when a strand or two breaks the wire can get hot enough at the break to damage the harness. Almost burned up my 2444 when this happened.

IH used the same type of wire for the resistor for the alternator on motor trucks when they switched from 10DN to 10SI alternators.

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IH2444

03-11-2007 10:04:36




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 Re: 1971-444 gas starts cold / dies after about 1/ in reply to Owen Aaland, 03-10-2007 19:04:58  
Owen, Thanks a bunch for that info, am rewiring my 2444 and could not find any resistor for the coil anywhere. But the measured resistance of the coil said there had to be one somewhere.



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L.C.Gray

03-10-2007 19:03:40




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 Re: 1971-444 gas starts cold / dies after about 1/ in reply to Farmalfamily, 03-10-2007 16:56:40  
Could possibly be a bad condenser. I had a Cub doing about the same thing. I had replaced/cleaned/reset everything but the condeser. Finally replaced it and have never had another minutes trouble.



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georgeky

03-10-2007 17:01:27




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 Re: 1971-444 gas starts cold / dies after about 1/ in reply to Farmalfamily, 03-10-2007 16:56:40  
Try a coil you know is good. It sure sounds like it is coil. Make sure it is a 12 volt coil. More than once I have bought a new coil that was no good.



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Gary in Mozarks

03-10-2007 18:57:17




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 Re: 1971-444 gas starts cold / dies after about 1/ in reply to georgeky, 03-10-2007 17:01:27  
Sounds like a coil to me too, Make sure you have a resister in the line if it does not have an internal resister. Coils are really six volt even when they say 12. Running 12v to a coil will burn them out in short order. The only other thing I can think of is a foreign body in the fuel tank. I had a 504 one time that had a dead mudd dobber in the tank and his bottom would stop the flow when he got to the outlet.

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georgeky

03-10-2007 20:45:08




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 Re: 1971-444 gas starts cold / dies after about 1/ in reply to Gary in Mozarks , 03-10-2007 18:57:17  
I was refering to what they sell as a 12 volt nowdays they have a built in resistor.



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