6400 slow to start cold
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Thread: 6400 slow to start cold

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    6400 slow to start cold

    Recent New battery and starter, it takes about 3 rounds of 8 second cranking the starter for it to fire up when itís been setting a while. Seems like several years ago (7-8) I replaced the fuel line and check valve for similar issue. Could fuel line or check valve gone bad already or could be another issue? ReStarts fine once itís been running.

    Thanks for input!

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    johnH123's Avatar
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    -How many hours?
    - How old is the fuel?
    -Does cycling the glow plugs help?
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    4300 hours. Fuel is not old. Not tried glow plug cycling.
    Once itís starts it will start again easily.

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    Sounds similar to typical scenario of fuel draining back to tank when engine isn't running. I'll suggest to replace fuel check valve.
    BigJim55, johnH123 and em14 like this.

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    Believe Iíve fixed it with new fuel lines and new check valve. JD Mechanic said the OEM fuel lines are junk and donít last very long. Fired right up after replaced. Will see after it sets for a while.

    Thanks for all the help!

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