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Tractor Talk Discussion Forum

Need Help HP power going down? Maybe fuel pump?Bel

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Jack

09-17-2003 11:53:49




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After I crank it up and it runs for a bit it
starts to slow down then will quit. If I put it under a load it will stop sooner. If I put
it under a load it doesn't have the power it
had a few months ago. Something has gone down hill. I put my thumb over the lines to injectors
and you can't hold your thumb on them while turning the motor over. I thought the pump might be ok because of that but I don't have any power.
What can I look for that might cause this.
I have check and cleaned all fuel filters and cleaned lines.
Need some help!!!!! !!!!! !!!!1

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JK-NY

09-17-2003 17:26:10




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 Re: Need Help HP power going down? Maybe fuel pump in reply to Jack, 09-17-2003 11:53:49  

Does this tractor have a lift pump, if so maybe it is weak and that could cause your problem. A lift pump often resembles a mechanical auto fuel pump, mght have a manual priming pump there too.



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twopop

09-17-2003 16:59:08




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 Re: Need Help HP power going down? Maybe fuel pump in reply to Jack, 09-17-2003 11:53:49  
In the first place DONT ever put your finger over an injector line....there is enough pressure there to shoot fuel deep into your finger,and you could get very very sick.check your fuel return line ,make sure it is open.other than that you could have a fuel restriction that is starving the pump



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Mike (WA)

09-17-2003 17:07:02




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 Re: Re: Need Help HP power going down? Maybe fuel in reply to twopop, 09-17-2003 16:59:08  
This possibility is so easy its almost criminal, but it could be a plugged vent in fuel cap. Try unscrewing cap while under load, and see if it perks up.



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twopop

09-17-2003 18:05:26




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 Re: Re: Re: Need Help HP power going down? Maybe f in reply to Mike (WA), 09-17-2003 17:07:02  
I second that,had a customer once who dropped the fuel cap,wouldnt run right after that



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RAB

09-17-2003 15:00:07




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 Re: Need Help HP power going down? Maybe fuel pump in reply to Jack, 09-17-2003 11:53:49  
You are probably right - not enough fuel. Have you tried changing the fuel filter?
Regards, RAB



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Jack

09-17-2003 11:56:09




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 Re: Need Help HP power going down? Maybe fuel pump in reply to Jack, 09-17-2003 11:53:49  
Its a Belarus 250AS that has the power going down
like its not getting enough fuel.



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