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Tractor Talk Discussion Forum

1950 MD

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Dale Self

04-18-2008 14:36:15




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1950 FARMALL MD.The tractor starts and runs great on the gas side. The tractor has good compression, but it only runs on 2 cylinders on the diesel side. Any one have any suggestions as what to do next?
Thanks for any help and suggestions.




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jbruce

04-19-2008 06:37:12




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 Re: 1950 MD in reply to Dale Self, 04-18-2008 14:36:15  
Fairly simple injectors. I have reseated the pop off valves with lava soap and abrasive toothpaste on a WD9. She was turning around 90 hp on 2 gals fuel per hr. Had to monitor the heat guage closely.



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D Slater

04-18-2008 15:16:46




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 Re: 1950 MD in reply to Dale Self, 04-18-2008 14:36:15  
I don't know how you checked compression on gas or diesel side. You can tell if the starting valves are leaking in the cylinders by cranking engine on diesel side with gauge in spark plug holes. If no starting valve leakage there won't be compression. Another sujestion is to remove the injectors one at a time and turn injection line to install injector outside head with bucket under it and check spray compared to a cylinder not missing. You may also be able to get a idea if its a injection pump problem by cracking bleaders at injectors while running. Also if its 2 cylinders on front or rear check for proper operation of butterflies in intake manifold. Also the running valves could leak or cam and valve opening parts problem, low compression from rings cylinder wear, bad head gasket. To check compression on diesel side requires doing it at the injector holes. Sorry for stating that if you already did this.

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IaGary

04-18-2008 14:46:05




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 Re: 1950 MD in reply to Dale Self, 04-18-2008 14:36:15  
Sounds like injectors need to be check to me.

Gary



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Dale Self

04-18-2008 15:08:54




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 Re: 1950 MD in reply to IaGary, 04-18-2008 14:46:05  
Any ideal what the price of injectors maybe for these? Can they be reconditioned and if so who does this?



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Triplerange

04-18-2008 19:48:36




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 Re: 1950 MD in reply to Dale Self, 04-18-2008 15:08:54  
I'd say Gary is right.
You can usually get them cleaned up.
Got a local mechanic you trust?
I had the guy I know at CNH do it for me.
An injection pump shop would be able to do the same.



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