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Farmall & IHC Tractors Discussion Forum
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450 Farmall

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Jeff

02-08-2004 11:04:42




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I recently purchased a 450 farmall gas. When I test drove the tractor, it seemed to run fine, I had it running for about a half hour. I brought it home and I filled it up with gas. Now it runs good for about 10 miutes and then it starts missing. I cleaned the sediment bowl, and there was not much in it. I drained the gas out of the bottom of the carb, I checked the points gap, they were fine, I checked the spark plug gap, that was fine also, but the front two spark plugs seemed a little wet, with oil or gas. My friend has a 560 gas and he said they had the same thing, and they used some lead additve and that cured their tractor. Does anyone have any other suggestions??

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sod

02-09-2004 23:14:35




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 Re: 450 Farmall in reply to Jeff, 02-08-2004 11:04:42  
I had the same symptoms on mine when I first got it. Flakes of rust kept on plugging the top of the sediment bowl/bottom of the tank.
make a cylinder out of aluminum screen and fasten it to the top of the bowl. It should fix you up for about 50 cents.
good luck
sod



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Jamesc

02-09-2004 05:29:16




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 Re: 450 Farmall in reply to Jeff, 02-08-2004 11:04:42  
I had the same thing happen to my super C last summer. I rebuilt then replaced the carb, but nothing. I tried everything. Finally one day I shined a bright spot light into the gas tank and saw a dead bumble bee floating around in the bottom. It would cover the hole and restrict but not stop fuel flow. Once I removed it, the tractor was fine. It worth a look.



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Jon

02-08-2004 15:35:30




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 Re: 450 Farmall in reply to Jeff, 02-08-2004 11:04:42  
sound like you have a crack in the block my 450 used to do that it cracked in the water jacket. Somone left water in it and and then drained it in the summer when it was warm and then what would happen when the block got hot and the antfreeze started boiling it would boil thru the crack and into the block and it would sould like a back fire. You might be able to take the head off and buy a new head gasket and then when you have the head of clean the surface were the head sits see if you have any cracks if not pull pistons 1 and 3 and then look and fell for any cracks. That is usally were they crack the most. If not pull the other two pistons just to make sure. When you put the pistons back make sure you dont mess up they bearins on the bottom of the rod make sure evry piston you pull right after you take it out the bottom peice goes righback on the rod if you mix them all up the engine rods are junk. Also when putting the engine back together make sure that the noch inside the rod were the crank rides is pointing towards the cam or to the side with your distributor is. How much did you pay for the thing and were do you live if you live near by maybe I can come over and help you out or call you and help you out over the phone. It can be fixed. E-mail me and let me know at grahammacdonald@cox.net

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GRP

02-08-2004 14:09:28




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 Re: 450 Farmall in reply to Jeff, 02-08-2004 11:04:42  
Check the coil. I've had the same thing happen to me on 2 different tractors, an Oliver and a farmall. They would run for 30 minutes or so then you couldn't start em if you towed 100 miles.

It's an easy thing to check, just go borrow one from another tractor or freind or something. Try it out.



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kjm

02-08-2004 13:40:34




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 Re: 450 Farmall in reply to Jeff, 02-08-2004 11:04:42  
Jeff, Take out the Champion spark plugs and put in anything else,that cured my Super C. lol kjm



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the tractor vet

02-08-2004 13:14:18




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 Re: 450 Farmall in reply to Jeff, 02-08-2004 11:04:42  
Try a tank of hightest i think you'll like it , for some unknowen reason they run a lot better and don't foul the pulgs as hightest (93) octain burns cooler and longer. .



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dhermesc

02-08-2004 11:59:24




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 Re: 450 Farmall in reply to Jeff, 02-08-2004 11:04:42  
If everything appears clean and firing OK try leaning out the carb with the main set screw. Had a similar problem with my 350.



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CNKS

02-08-2004 11:14:15




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 Re: 450 Farmall in reply to Jeff, 02-08-2004 11:04:42  
Proably a fuel flow problem, caused by crud in the tank and/or fuel lines. Shine a light into your gas tank and see how clean it is. Hopefully it won't require cleaning. Remove and blow out the fuel line. There is a metal filter inside the fitting on the carb that the fuel line screws into. Would not hurt to clean and put a kit in the carb. Does not really sound like an electrical problem, if the tractor continues to run after it starts missing. If it dies soon after, you could need a condensor or a coil.

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