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Farmall & IHC Tractors Discussion Forum
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Finally got my 650- but it won't run on diesel- He

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Ron in Nebr

11-15-2003 17:51:45




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I finally got the 650 I've been looking at bought the other day. Looks like it's a pretty decent tractor- sheetmetal's straight, tires aren't the best but they hold air, missing the "650" emblems on the hood and some of the cowl metal between the fenders and the fuel tank, but all in all it's not bad. I was prepared to offer $500.00 but the guy asked $300.00 right off the bat, so I cleverly accepted. Think I got robbed???:)

It was "supposed" to be a runner, but had been sitting, probably 10yrs or so. The motor was slightly stuck, but got it freed up easily enough.

Got it running good on gas, but it won't switch to deisel. I am fairly knowledgable about gas engines, but this diesel is a whole new ballgame for me.

Changed the filters and of course put new diesel in. I could get the glass "filter" and the rear canister filter to gravity bleed, but can't get the front canister filter to bleed. As I read in the archives, I attempted bleeding it with the engine running on gas and the throttle slightly open. No pressure registers on the guage, and I cant get any more than a few bubbles at the bleeders on the injectors. Is there an internal problem with the pump, or am I missing something?

Also, what's the reason for two fuel lines coming out of the bottom of the main tank- one with a petcock and one without? Is one a return line?

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Red Rider

11-15-2003 19:44:18




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 Re: Finally got my 650- but it won't run on diesel in reply to Ron in Nebr, 11-15-2003 17:51:45  
Ron, The second filter is pressure feed by the primary pump. This is the small unit that attaches to the rear of the injection pump. There also a screen filter where the fuel from the first filter inters the primary pump. Check and make sure this is not pluged. When running on the gas cycle if the primary pump is getting fuel it does not take 5 or 10 seconds for the second filter to come out the bleeder screw.

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Ron in NE

11-16-2003 00:44:52




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 Re: Re: Finally got my 650- but it won't run on di in reply to Red Rider, 11-15-2003 19:44:18  
Thanks a bunch- where exactly is this screen in the supply line to the pump? I spent some time tonight beering up a guy who is for the most part a reliable IH mechanic(works in our local dealership), and he thought I had a pump problem that required pump surgery. I'll try anything-- just wanna get this beast running!



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Haas

11-15-2003 18:41:36




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 Re: Finally got my 650- but it won't run on diesel in reply to Ron in Nebr, 11-15-2003 17:51:45  
The two fuel lines to the tank. The one with the shut off petcock is the supply. The other one is a return line. Excess fuel from the injection pump goes back to the tank. Can't help much on pump problems, but it sounds like you have not got fuel to the pump yet, or there is some problem in there.



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