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Farmall & IHC Tractors Discussion Forum
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Cold starting my H

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Guff

01-02-2007 13:02:57




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Hello fellow old tractor guys. I have 1951 H that acts up on me during cold starts. When I shut er down I always close the fuel valve and let her idle till she dies. Then I pull the exhaust stack off and wrap the motor area with a tarp to keep the snow out. When I went to start her the other day to remove some snow, it was about ten degrees and had a little over 3 feet of snow on the ground and the H. The engine caught right away but reved up to a high RPM. I had not touched the throttle and was barely choking it. I shut er down becase I was afraid it might bend a rod or something. I did this several times, each time letting some of the heat transfer to the rest of the engine. Finally I started raising and lowering the loader to put a load on the motor and slow down the RPM. Eventually it warmed up and started idling and responding to the throttle. Anybody out there know what's going on ?

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Guff

01-04-2007 09:56:37




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 Re: Cold starting my H in reply to Guff, 01-02-2007 13:02:57  
Thanks for the tips guys. I would love to park her inside, but haven't been able to convince my wife that we need a barn... a question on the governor, I have never opened it up, should I pull the cover off and spray some WD-40 in there? Also do I need to have a new gasket ready? This high rev condition has occurred in past winters, when I need to plow it usually takes one to two hours so the motor is definitely getting warm. Not sure if she has a thermostat, I have to look into that... As far as the block heater, I keep her parked up on the hill so I can dodge the snow drifts on my way down to the drive way, no power up there.
Thanks again !
Guff

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Hugh MacKay

01-03-2007 14:29:24




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 Re: Cold starting my H in reply to Guff, 01-02-2007 13:02:57  
Guff: When the tractor does this, just shut it down and go over the governor with a propane torch. One of the other respondants touched on your problem, not bringing tractor up to working temperature often enough in cold weather. This is something that accumulates from a lot of short runs.



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El Toro

01-02-2007 16:18:36




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 Re: Cold starting my H in reply to Guff, 01-02-2007 13:02:57  
It would help your starting if you had a block heater to preheat the engine. Hal



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anicholson

01-02-2007 14:04:55




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 Re: Cold starting my H in reply to Guff, 01-02-2007 13:02:57  
I agree with Tom W also, Running the tractor long enough to get it fully warmed up is imporatant for removing moisture/condensation. Every third time it is operated in the winter, it needs to be up to temp. Also check the operation of your thermostat, if it is missing, or stuck open, the tractor will never come off of the cold end of the temp scale. It needs to do that. To get it warm, cover the radiator intake at the grill to limit air flow.
Another idea (if it races up again) is to heat it with a hair dryer for 15 minutes at the governor. That is the curve sided box in front of the carb.

I would not cover the engine if it outside. They seem much more prone to condensation when covered because they stay cold when ambient air can condense on/in them. Covering the exhaust is manditory, but not the entire unit. Putting it inside is often preferable, but not always practical/possible. JimN

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Nat 2

01-02-2007 13:53:21




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 Re: Cold starting my H in reply to Guff, 01-02-2007 13:02:57  
Tom W is probably on to something. If enough moisture ends up in the governor case, it would stand to reason that the mechanism would freeze up.

Since the mechanism would be frozen with the weights pulled in, the governor would automatically open the throttle more and more, desperately trying to seek equilibrium.

I promise not to get started ranting about the injustice of leaving an old Farmall out in the weather, tarped or not.

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City-Boy McCoy

01-02-2007 13:42:15




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 Re: Cold starting my H in reply to Guff, 01-02-2007 13:02:57  
One sure symptom of a lean condition is higher revving. Try shutting off the gas but not running it dry next time. And when you do fire it up next time, when/if it does rev up, pull the choke rod out and don't be so quick to push it all the way back in. Then, play that choke rod like it is a fiddle bow and you are Charlie Daniels. The carb may be icing up a little and leaning things out. This may be a cold weather (lean) problem that will go away in the Spring.

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Tom Windsor

01-02-2007 13:13:58




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 Re: Cold starting my H in reply to Guff, 01-02-2007 13:02:57  
you are describing some pretty cold conditons. Do you suppose the govenor was iced up? Sounds like it was stuck and you thawed it out.

TW



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