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  1. #1

    Default how to bleed fuel lines

    I have a 3525, I just changed the fuel filter and the tractor will not crank. Someone said to bleed the fuel line because I got air in it when I changed it and that will make it not crank. Can someone here tell me how to bleed the fuel line. Any help would be great, I dont want to have to put it in the shop. I cant afford it. Thanks

  2. #2
    Platinum Member
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    May 2002
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    Mahindra 2516

    Default Re: how to bleed fuel lines

    You need to back off the injectors while cranking it over. When it is nothing but a constant stream of fuel (no air) tighten them back up. When they are all tight crank it again and it should start

  3. #3

    Default Re: how to bleed fuel lines

    Thanks, thats what I thought...I just didnt want to mess anything up.

  4. #4
    Member
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    Nov 2008
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    Northwest Alabama
    Tractor
    IH 354

    Default Re: how to bleed fuel lines

    TrueCountry,

    The spin, crack, & bleed method will work with a little time & patience. On your tractor, there is a more simple method. With the fuel flow established, unscrew the hand primer plunger and simply pump the primer until you feel it getting more firm (you may even hear fuel flowing back into the fuel tank through the return line). At this point push the primer back down one last time and screw it back in place. Should be ready to run. Hope this helps.
    Scott @ Artec

  5. #5
    Super Star Member EddieWalker's Avatar
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    Tyler, Texas
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    Several, all used and abused.

    Default Re: how to bleed fuel lines

    Be sure the fuel filter is full. On some diesels, it's pretty big and takes a very long time to fill up again. Then loosen the injector lines until you get a steady amout of fuel coming out of the lines without any bubbles.

    Eddie

  6. #6
    Platinum Member Raspy's Avatar
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    NH TC29DA Bolens G14 Skytrac 5028 Dodge Cummins Jeep Rubicon Grizzly 700

    Default Re: how to bleed fuel lines

    True,

    Bleed the air out of the fuel filter with the bleeder on top of the canister or at the injection pump. This is just a gravity operation. When fuel shows up re-tighten the bolt. Next crack the fuel injection nuts on the fuel lines. Open them about 1/3 turn. Push the throttle to full and crank the engine. The fuel will not run steady, it will pulse. Crank for a bit and look for fuel instead of air. Then re-tighten the injector line nuts, start it and reduce the throttle setting.

    You said it would not "crank" This means it will not turn because of a dead battery or bad starter. I think you meant it would turn but not start.

    Some guys pour fuel into the spin on filter before installing it, but that might not be the best way because of possible contamination. I've also seen guys pour in transmission fluid when they didn't have diesel available.
    John

    I only exaggerate enough to compensate for being taken with a grain of salt.

  7. #7
    Silver Member genusCastor's Avatar
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    East Texas prairie
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    Mahindra 3510 w/FEL

    Default Re: how to bleed fuel lines

    Quote Originally Posted by Raspy View Post
    Bleed the air out of the fuel filter with the bleeder on top of the canister or at the injection pump. This is just a gravity operation. When fuel shows up re-tighten the bolt.
    So, can air be bled from the system with this bleeder? I have a 3510, ran it out of fuel today, now it won't start (and the fuel filter is 1/2 empty).

    The manual I have says to open the cock on the fuel pump, start the engine and let it run a while, then close the fuel pump cock. I didn't try that yet (it was almost dark when it ran out of fuel, I'm going to look at it tomorrow), but it sounds too easy...simply opening the fuel pump cock will enable the engine to start?

    - djb
    The best things in life aren't things.

    2003 Mahindra 3510 with front end loader
    2010 Dixie Chopper 2550 ZTM: 25 hp Kohler, 50" cut

  8. #8
    Veteran Member
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    Default Re: how to bleed fuel lines

    It works.
    Galen LaWall
    Your Mahindra Tractor Dealer
    185 Pearl Street
    Batavia, New York 14020
    585.343.0770

  9. #9
    Silver Member genusCastor's Avatar
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    East Texas prairie
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    Mahindra 3510 w/FEL

    Default Re: how to bleed fuel lines

    Quote Originally Posted by LAWALLSTRACTOR View Post
    It works.
    Yup, it sure does.

    Tractor will run now, but the fuel filter didn't fill up. Will that be a prollem?

    - djb
    The best things in life aren't things.

    2003 Mahindra 3510 with front end loader
    2010 Dixie Chopper 2550 ZTM: 25 hp Kohler, 50" cut

  10. #10
    Veteran Member
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    Default Re: how to bleed fuel lines

    Quote Originally Posted by genusCastor View Post
    Yup, it sure does.

    Tractor will run now, but the fuel filter didn't fill up. Will that be a prollem?

    - djb
    Loosen the sight bowl nut and let the air out and the fuel fill it, then tighten the bowl nut back up.
    Galen LaWall
    Your Mahindra Tractor Dealer
    185 Pearl Street
    Batavia, New York 14020
    585.343.0770

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