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  1. #1
    New Member
    Join Date
    May 2011
    Posts
    10
    Tractor
    755 John Deere

    Default John deere 755

    Can anyone help. When my 755 is first started when cold it starts right up and dies after a second . After repeating this about 6 t 7 times I finally can get it to idle . When the engine is warm it's not a problem. I have put new glow plugs in. Flushed the fuel lines . Bled the lines for Air.

  2. #2
    Platinum Member
    Join Date
    Dec 2001
    Posts
    943
    Location
    Maryland

    Default Re: John deere 755

    Sounds like you are experiencing fuel drainback when it sits for a period of time. This usually happens when the fuel lines between fuel tan and injection pump aren't tightly sealed. Try replacing all the rubber hoses from tank to the pump, filter, to the injection pump. That will probably fix it. The hoses can get tiny dry rot cracks in them and leak.

  3. #3
    New Member
    Join Date
    Jun 2011
    Posts
    11
    Tractor
    john deere f935

    Default

    I own a Deere 755 also experience the same issue don't think its fuel drain back in the rubber lines. The filter is full on my f932 it had a problem with loosing fuel prime and it would run till the filter housing got low on fuel the issue was in the pick up tube in tank but it ran with air in the system till filter drained. Also if I let my fuel pump go for min to prime the system it does the same thing on my 755 In my experience I increase the throttle and its start better no idea if idle is too low I don't really worry about it too much doesn't cause me much of an issue try idling the throttle up not all the way but increase it a little. Also is your fuel regulator internal mount or external mount.

  4. #4
    New Member
    Join Date
    May 2011
    Posts
    10
    Tractor
    755 John Deere

    Default

    I think it's external but not sure . I have moved the throttle up to full and I get it to run slightly longer but it still continues this start run for a few seconds then dies . It sounds like it gets enough fuel right away ti fire but it's starving for fuel to keep it running. But after several times ,at least minimum of 6 starts it finally will have enough to keep running. Colder weather the more times it takes to keep it running . Like I mentioned after the engine is warm it fires with a touch of the starter and stays running. This is only a cold engine when I have to do this.

  5. #5
    New Member
    Join Date
    Jun 2011
    Posts
    11
    Tractor
    john deere f935

    Default Re: John deere 755

    Do you let the fuel pump run a min before you try it? how long do let the glow plugs run? On your tractor does it have a glow plug feature where turn the key back then crank? The reason I ask is my Deere we bought no engine in it the rings failed so I installed a larger yanmar and a yanmar spec for a different machine so its not all oem.

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