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Tractor Talk Discussion Forum

Re: Rotary Injection Pump Diagnosis

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Ken Macfarlane

11-27-2013 11:39:36

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Can't get it to run to max governed speed anymore, it will creep up to maybe 1900 max under no load. I suppose that suggests the meter valve is sticking or I'm having fuel delivery problems to the metering valve.

Re trying to force the metering valve to exercise, I've done this about 50 times now, really tough as the slightest sudden drop in throttle position kills it dead with really tough restart. If you creep the speed up and down you can freely go from idle to the 1900 or so. If you increase throttle suddenly the rpms overshoots badly too.

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11-27-2013 12:02:58

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 Re: Rotary Injection Pump Diagnosis in reply to Ken Macfarlane, 11-27-2013 11:39:36  
When speeds overshoot or underrun like you have then metering valve sticking is verified. It may get better over time if you can get it to run at all. If not it will have to come apart.

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Ken Macfarlane

11-29-2013 04:36:45

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 Re: Rotary Injection Pump Diagnosis in reply to Dieseltech, 11-27-2013 12:02:58  
Thank-you for your help! If the metering valve has got rust on it I'm guessing the advance ring and valve are the same.

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