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Case Tractors Discussion Forum
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Case 448 Fuel/Choke issue

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JamieCase

04-26-2007 09:53:51




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So the poor mechanic I am, I decide to spray some carb/choke spray into the carb. The spray does say you can do this with the motor running. It stalls and I leave the machine alone. Now I can start it quite easily but it won"t run unless the Choke is on. I have since taken the air filter off to make sure the choke and throttle are working properly and they are. Any ideas? Killer is the machine was working until I messed with it.
I have had it running as long as 10 minutes with some choke, as soon as I remove choke it dies. Will I hurt engine with choke on? Onan 18 2 cyl engine.

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kcs

08-29-2007 20:24:05




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 Re: Case 448 Fuel/Choke issue in reply to JamieCase, 04-26-2007 09:53:51  
I have a 448 case with the same problem. It was the intake manifold. This manifold has a top and bottom half. When the tractor back fired the gasket blew out. I repaired it with red silicone.



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bradley martin

04-26-2007 11:18:50




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 Re: Case 448 Fuel/Choke issue in reply to JamieCase , 04-26-2007 09:53:51  
Speaking from experience, your high speed jet within the carb is plugged...the carb cleaner likely dislodged some carbon or other dirt. If you are lucky you can remove aircleaner and blow out the jet without removing carb from engine. Good luck.



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SteveinCT

04-26-2007 10:12:19




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 Re: Case 448 Fuel/Choke issue in reply to JamieCase , 04-26-2007 09:53:51  
If this is your tractor and you are going to keep it, I would join the Ingersoll/Case group on Yahoo. This Case board isn't for the same company. Anyways, if you have a 448, chances are you have a vacuum module on the side of the carb that operates the fuel pump. The vacuum line could be cracked, or the fuel pump might need a rebuild. Hell, I messed around and messed around with my pump until I just went and got a 2-3 GPM electric fuel pump. A lot of us do. Drop me an e-mail if you need anything more. It's a good tractor when it's running well!

Steve

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