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Well, For Darn!

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Allan In NE

07-06-2007 15:35:46




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Late model F, 6 cylinder diesel. 32xx hours.

Used it last year on oats and it never missed a beat. Was running fine when I shut it off last year.

When I started getting it ready this year, it popped right off; not a problem in the world.

Now today, the stinker doesn't want to stay running. Will run for 5 to 10 minutes at idle then die. If I increase the rpms, it will die within just a couple, three minutes.

If I go back up on the engine and pump up the manual fuel pump, it will start right back up again.

Changed the fuel filter and checked/cleaned the sediment bowl and screen. Same thing; just won't keep running.

'Spose I have a hose collapsing internally or something? Really don't wanna think about that injector pump. :>(

Allan

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sd pete

07-08-2007 05:48:55




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 Re: Well, For Darn! in reply to Allan In NE, 07-06-2007 15:35:46  
My M gleaner did that a few years ago and it was the plastic parts in the pump coming apart. Ouch! oh well it was only money



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Bob

07-06-2007 22:54:50




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 Re: Well, For Darn! in reply to Allan In NE, 07-06-2007 15:35:46  
The governor damper ring in the Roosa-Master IP is disintegrating, and plugging the housing pressure regulator valve, just like on the GM 6.2 diesels and the Dorf 6.9 diesels.



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Allan In NE

07-07-2007 05:58:21




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 Re: Well, For Darn! in reply to Bob, 07-06-2007 22:54:50  
Hi Bob,

That's what I'm afraid of.

I'm doing the "human" deviation thing here first, just hoping by some miricle it will be something else. :>)

Whadda think? Pull that little timing cover and look at the fuel?

Allan



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Bob

07-07-2007 06:30:32




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 Re: Well, For Darn! in reply to Allan In NE, 07-07-2007 05:58:21  
Take out the complete housing pressure valve/return fitting, and see if there's any "coffee grounds" in the valve.

Start it up with the fitting still removed, and see if it will keep running.

(DON'T let it catch fire!)



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Allan In NE

07-07-2007 06:44:06




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 Re: Well, For Darn! in reply to Bob, 07-07-2007 06:30:32  
I'm on my way.

Thanks, Bud.

Allan



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Sid

07-06-2007 21:17:19




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 Re: Well, For Darn! in reply to Allan In NE, 07-06-2007 15:35:46  
"Changed the fuel filter" I have been around one or two diesels. They all had two. Does the sediment bowl and screen count as one?



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Allan In NE

07-07-2007 15:52:44




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 Re: Well, For Darn! in reply to Sid, 07-06-2007 21:17:19  
Have no idea.

This is my 3rd F/F2 and they have all had just one fuel filter.

Allan



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NC farmer

07-06-2007 18:17:35




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 Re: Well, For Darn! in reply to Allan In NE, 07-06-2007 15:35:46  
Check strainer in tank.Mine would flow from bowl good also, but under load it was starving the pump.Cleaned strainer has not given trouble since.



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Eldon (WA)

07-06-2007 16:55:28




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 Re: Well, For Darn! in reply to Allan In NE, 07-06-2007 15:35:46  
Sounds like the typical problem with the 301 injection pump. I can't remember if it is the input line or return line that you take off and if you find black specs in the fuel a checkball is disintegrating. The guys over at allischalmersdotcom discussion will have more info.....that is one engine I don't have.



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Allan In NE

07-06-2007 16:30:49




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 Re: Well, For Darn! in reply to Allan In NE, 07-06-2007 15:35:46  
Fuel runs out of the sediment bowl like a waterfall. Doesn't matter if the cap is on the tank or not.

Dunno, guess it's either in that return line, collapsing fuel line or the darned pump flex waffer. :>(

Allan



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bjb in Ne

07-06-2007 15:57:02




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 Re: Well, For Darn! in reply to Allan In NE, 07-06-2007 15:35:46  
When you have the sediment bowl off check the flow....it might be clogged inside the tank.



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T.K. in Pa

07-06-2007 15:53:39




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 Re: Well, For Darn! in reply to Allan In NE, 07-06-2007 15:35:46  
check the vent on your fuel cap, had the same kind of problem on a Case tractor once.



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TxAllisMan

07-07-2007 16:50:12




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 Re: Well, For Darn! in reply to T.K. in Pa, 07-06-2007 15:53:39  
Is there a way to check the injection pump pressure at the injectors?

You have already done the things that I would have by checking the fuel tank and filter.

Are the fuel lines metal or rubber from the tank to the filter then from the filter to the injection pump.

I dont know how much suction pressure the pump has on the fuel lines but you mave a fuel line thats restricted from flow.

Might take air pressure before the filter and after the filter and see if anything comes out when you blow the air through the fuel lines.

Might do it on both feed and return lines.

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Allan In NE

07-08-2007 02:25:23




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 Re: Well, For Darn! in reply to TxAllisMan, 07-07-2007 16:50:12  
I dunno, it's a wacky deal.

Went to town first thing yesterday morning and bought all the repairs I'd need to overhaul that pump.

Got out to the farm and started fooling with the old rascal. Before I opened it up, tried it again and the thing ran for three hours straight without a hitch, so I’m thinking I've dodged the bullet.

Then left it set until 8 last night; tried it again and we're right back where we started; sporadically dieing now and again.

Did notice that I don't have to pump up the manual pump after it dies. Just hit the crank and she's off and running again.

Will try again today. :>(

Allan

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