Coil issue or something else!

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Molly & Ollie
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Coil issue or something else!

Postby Molly & Ollie » Wed Aug 12, 2015 10:21 pm

I'm having a problem with sputtering / stalling. I had something similar to this happen on another cub that I own, so I figured I would follow the same recommendations (fuel, carb, tank, etc.) and the problem would be solved. But that's not the case. The tractor will run fine for 30 - 40 minutes, then sputter and stall. Once it cools down, it will run for the same amount of time and then stop. When this started I first thought it was fuel starvation or something with the carb. All of that proved to be okay. So I checked the first coil and it was bad. Replaced it with a new one. The tractor ran for about 30 - 40 minutes and then the same thing. The second coil is getting too hot to touch as well. This coil is also bad! (I tested it like the link on this site recommends)

Which brings me to my question. What are the odds that two coils would be bad? Or could there be another issue that I'm missing? Something in the wiring? A short? Loose or dirty connections? And would any of those things cause a coil to go bad and get so hot that you can't touch it? The ignition switch is not original, and I'm going to replace it soon. The owner had broken the key off and an ignition switch from a Huskey tractor was put in it's place. Not sure if that is my problem. Could this be the culprit? I can't imagine that it would start if it wasn't wired properly, but then again, that's why I'm posting this.

Oh yeah, one another thing. When I was purchasing the tractor, I inspected the wiring at the ignition switch, and the plastic connection at the switch had melted at some point in the past. Any thoughts!

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Glen
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Re: Coil issue or something else!

Postby Glen » Thu Aug 13, 2015 12:50 am

Hi,
I'm not sure what is wrong with the electrical system, but the stopping after some time can also be caused by the fuel tank cap vent being plugged. Look and be sure the hole or holes in the cap are clean and open. The original type caps in the 1950's had 1 hole on the outside, on top, and 2 little holes under them, near the gasket.
If you have the newer replacement cap from Case IH, they have vent holes too. :)

staninlowerAL
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Re: Coil issue or something else!

Postby staninlowerAL » Thu Aug 13, 2015 2:51 am

Additional information needed: What type electrical system? 6v or 12v? Original or converted? What type coil are you using as a replacement?

bythepond88
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Re: Coil issue or something else!

Postby bythepond88 » Thu Aug 13, 2015 12:00 pm

Check the voltage output from the gen/alt while running. Eddie's regulator went bad and was overcharging, which was burning up coils. On the other hand, a bad coil right out of hte box is also a possibility.
Michael Cummings
Eddie - a 1959 International Lo-Boy named after my father in law, who who bought her new.

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ricky racer
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Re: Coil issue or something else!

Postby ricky racer » Thu Aug 13, 2015 12:14 pm

Can you easily bypass the ignition switch to eliminate that as a possible issue?
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Matt Kirsch
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Re: Coil issue or something else!

Postby Matt Kirsch » Thu Aug 13, 2015 1:02 pm

Running a stock 6V coil on a 12V system without a ballast resistor is a good way to turn a good coil into a bad coil in, say, 30 to 40 minutes...

staninlowerAL
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Re: Coil issue or something else!

Postby staninlowerAL » Thu Aug 13, 2015 3:16 pm

That's part of the reasoning behind my questions.
staninlowerAL wrote:Additional information needed: What type electrical system? 6v or 12v? Original or converted? What type coil are you using as a replacement?

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Molly & Ollie
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Re: Coil issue or something else!

Postby Molly & Ollie » Thu Aug 13, 2015 9:07 pm

Thanks for all the responses. To answer some of the solutions / questions. It is a 12v coil. I actually thought that perhaps I had been given a 6v instead of a12v, but it couldn't be that simple of a solution. As far as the gas cap, I ordered a free one as soon as a bought the tractor, and it's in place. The ignition switch is going to be replaced with a new one that is specific to a cub. Never thought about the voltage regulator over-charging, thanks, that's on my agenda to check tomorrow.

staninlowerAL
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Joined: Fri Oct 29, 2010 11:34 pm
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Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: Coil issue or something else!

Postby staninlowerAL » Fri Aug 14, 2015 2:34 pm

Molly & Ollie wrote:It is a 12v coil. I actually thought that perhaps I had been given a 6v instead of a12v, but it couldn't be that simple of a solution.

Should be "12V coil with internal resistor unless you have a ballast resistor between the coil and distributor.

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Molly & Ollie
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Joined: Thu Jan 03, 2008 8:26 pm
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Tractors Owned: '53 Cub
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Re: Coil issue or something else!

Postby Molly & Ollie » Fri Aug 14, 2015 8:32 pm

Well that might just be the answer. Didn't have time to check the voltage yet, but the box for the coil does not indicate that it's has an internal resistor. Is there anyway to determine it other than the box? I did an internet search of the part # and I'm getting conflicting answers. Some say it has it, others say it does not.

staninlowerAL
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Joined: Fri Oct 29, 2010 11:34 pm
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Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: Coil issue or something else!

Postby staninlowerAL » Fri Aug 14, 2015 9:38 pm

I don't recall the voltage drop with the internal resistor but someone (I think Bob in CT) posted on this a few days ago. Sometimes 12V fed into the distributor can create problems with the condenser and/or points. I would consider changing the condenser and at least checking the condition of the points. Someone else may weigh in on this one with other opinions.

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Re: Coil issue or something else!

Postby Eugene » Fri Aug 14, 2015 9:47 pm

9 volts or less at the points.

Block the points open. Ignition on. Read voltage at the points or the terminal on side of distributor.

If the voltage reading is full battery voltage, purchase and install a Chrysler ballast resistor from you auto parts store. Much cheaper than a coil.
I have an excuse. CRS.

Jim Becker
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Re: Coil issue or something else!

Postby Jim Becker » Fri Aug 14, 2015 10:50 pm

Eugene wrote:Block the points open. Ignition on. Read voltage at the points or the terminal on side of distributor.

I think that test is always going to give you battery voltage, even with a ballast resistor in the circuit.

Eugene
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Re: Coil issue or something else!

Postby Eugene » Sat Aug 15, 2015 1:22 pm

Jim Becker wrote:I think that test is always going to give you battery voltage, even with a ballast resistor in the circuit.
Correct. Test showed full battery voltage with points open.
I have an excuse. CRS.

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Molly & Ollie
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'74 154
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Re: Coil issue or something else!

Postby Molly & Ollie » Sat Aug 15, 2015 7:48 pm

Electronic Ignition.


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