John Deere 2240 sputters running at full throttle

cp57

Member
Have a problem with 1979 John Deere 2240 3 cylinder when running at full throttle it sputters. Changed fuel injectors bleed lines and it is still sputtering when running at full throttle. Sometimes it will also do it at low throttle. Any in put would help.
 
(quoted from post at 14:57:59 04/24/23) How many hours on the injection pump? It might be time for service if advance is no longer working correctly due to some worn internal parts.
Unfortunately I am not sure how many hours. I did wonder if it was in the pump itself but when it would sputter in high and sometimes in low I lean toward the injectors. After changing them out and the problem remains wasn t sure if I needed to head in the direction of the pump.
 
(quoted from post at 16:14:38 04/24/23) Injectors dont cause that trouble nearly as often as injection
pumps do.
t this point in time will it hurt to run it off and on until I can get another pump? Spring work is here. Thanks for the info.
 
(quoted from post at 18:03:46 04/24/23) Long as it runs/pulls well I'd use it. Question, why not have the original pump repaired and recalibrated?
Just looked into most are refurbished cost is still quite high. Found a new one from old stock but you need to bid on it. If I know I have a little time I can see which is a better way to go.
 
Have you checked pump timing, if the injection is late, it will cause high idle mis-fire. Late timing can also be caused by the injection advance not working.
 
(quoted from post at 23:14:14 04/24/23) Have you checked pump timing, if the injection is late, it will cause high idle mis-fire. Late timing can also be caused by the injection advance not working.
Thanks that is good to know helps in narrowing this down. Would have been better if it started at the end of summer last year so able to fix over winter. Sure appreciate the advice.
 
I would suggest contacting
Dieseltech to rebuild the pump. It
will be done right at a reasonable
price. His email is always open.
 

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