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Farmall & IHC Tractors Discussion Forum
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Pulling a diesel to start it

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Dale

06-10-2004 10:17:44




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I posted a message earlier about my 450 diesel. Thanks to PA Steve, justin, and Jed for their nice answers.

I can't get the engine to start on gas this spring. I shut off the gas line to the carb and ran it on gas until the carb was empty last fall. I had not done that before. Now it won't start. Gas will run from the valve on the carb, so gas gets into the carb, but not into the engine.

If I put it in diesel mode by pulling the diesel lever, will the engine start by pulling the tractor in 4th or 5th gear? I've tried with the battery, but turns over slowly. Thanks in advance. Dale

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Bus Driver

06-10-2004 17:42:21




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 Re: Pulling a diesel to start it in reply to Dale, 06-10-2004 10:17:44  
While I have never pull started these particular Farmall Diesels, I sometimes pull start a 35hp Diesel with an 18hp gas tractor. Works the small tractor hard to do the job. It takes some power to pull start a Diesel.



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Bob M

06-10-2004 19:42:00




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 Re: Re: Pulling a diesel to start it in reply to Bus Driver, 06-10-2004 17:42:21  
Indeed! I've pull started my old Kenworth flatbed (290 HP diesel) several times with a Super M. Even with the KW in 9th or 10th gear the Super M will want to spin her tires soon as the clutch is let out on the truck. Fortunately the KW always starts after pulling it just a few feet.



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Farmall43

06-10-2004 12:36:00




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 Re: Pulling a diesel to start it in reply to Dale, 06-10-2004 10:17:44  
Yes, it will start by pulling it. My 400 will not start on gas either. I pull start about twice a year just to move it and get every thing lubed up until i get to it. I pull it with my 450 gas in 3rd and the 400 in 3rd. About half throttle. you will notice unburt fuel seeping out of the stack and do not wear anything white when attempting this. It will run rough at first. Just let it sit there and idle for a few minutes until the smoke clears up from white. In 80 degree wheather you will need to pull it about 100 yrds. In 60 degrees it takes about 400-600yrds.

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Haas

06-10-2004 12:19:31




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 Re: Pulling a diesel to start it in reply to Dale, 06-10-2004 10:17:44  
Some folks say you should not use starting fluid(ether) on these. However, I have started my MD a couple of times on diesel with starting fluid. It will start with the starter that way. Takes a couple of tries when the weather is warm. I doubt you could do it in cold weather. As others said, check the manifold butterflys to make sure they are sending air to the carb as they should and also that the carb float is releasing. The float is locked up in diesel mode to shut off gas flow.

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Dale

06-11-2004 06:43:49




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 Re: Re: Pulling a diesel to start it in reply to Haas, 06-10-2004 12:19:31  
Haas - How do I check the manifold butterflys to make sure they are sending air to the carb as they should? Do you take the carb apart to see if the carb float is releasing?

Thanks for all the good notes. Dale



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Bob M

06-10-2004 10:49:09




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 Re: Pulling a diesel to start it in reply to Dale, 06-10-2004 10:17:44  
Dale – It should start right up by pulling. Pull it in 5th and open the throttle about ˝ way. You’ll get some white smoke at first but the engine should start.

Tip: Set the changeover lever to gas (start) position as you begin to pull (this partially decompresses the engine, makes it easier to start spinning and lessens the chance of skidding the tires). Once the engine begins rolling move the lever back to the diesel (run) position.

To the problem of gas not getting into the engine, make sure the butterfly valves in the manifold close fully when you move the changeover lever to the gas position. Problem could also be a bit of junk plugging in the carburetor fuel discharge orifice.

Good luck!

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Randy in NE

06-10-2004 10:41:47




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 Re: Pulling a diesel to start it in reply to Dale, 06-10-2004 10:17:44  
You might have to pull it quite a distance to get the head hot enough for it to run. The purpose of starting it on gas is to get the head warm enough that the diesel/air mixture will detonate. I'm sure it will work. You just might need to pull it farther than you would expect.



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