Bleeding fuel system after replacing fuel filter
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    Bleeding fuel system after replacing fuel filter

    First post here. I've read and searched forever on this problem and I can't figure it out. I've watched every video I can find and nothing seems to address what I've got going on.

    I've had my 1025r for 3 1/2 years (180 hours). I was doing my spring service and replaced the fuel filter in the sediment bowl. It was running perfectly before and now it won't start. I had filled the bowl before putting it back on. Ran for a few seconds and died.

    From other posts, my fuel pump does not click or make noise. Never has. My system doesn't seem to self prime. I called my local dealer where I bought it. Their suggestion was to just keep cranking and they confimed I'd not hear the fuel pump clicking.

    I cracked open the steel lines at the injectors and can see small bubbles coming out. But I've been trying for hours and hours. I've had to charge my battery several times (cranked till battery was dead 3 or 4 times just today)

    Other things that have been suggested that I've tried or checked:
    Fuel is on.
    Filter seems correct and not leaking.
    Tank is 3/4 full.
    I've tried starting fluid and it won't take off.
    When its cranking and not using and starting fluid, it does nothing but crank. Doesn't even try and fire.

    I'm so frustrated at this. Something that is this routine and common should not be this difficult. Does anyone have any suggestions or ideas. I'm at a loss and about ready to trailer back to the dealer.

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    Sounds like your fuel transfer pump is not working. If you are turning the key to the on position and are not hearing a clicking noise you are nut pumping fuel to the high pressure pump. These engines self prime with the fuel transfer pump. Make sure your fuel shut off valve is opened. You might also try and fill the fuel tank to the top of the tank. This might give you some gravity feed to the fuel system.

    Do you see fuel in the fuel filter water separator? You shouldn't need to crank it over for more than a minute or so. Do not use ether on these engines with glow plugs. Bottom line is, you are not getting fuel to the engine.
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    Not getting fuel makes sense and I've considered that. But here's my question. If my transfer fuel pump has died, would the tractor run normally without it? It was running fine until I changed the filter and can't believe that it just died at the exact same time as changing the filter.

    Could it be weak? Is that pump going out common at 180 hours?

    Thanx for the help

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    Quote Originally Posted by Slash0311 View Post
    .

    I cracked open the steel lines at the injectors and can see small bubbles coming out.
    be very careful cracking the steel line if its a high pressure common rail system the pressure could cause serious injury i don't have much experience with yanmar engines but have experience with Cummins and it sounds like the transfer pump went out as these systems are self priming i believe these systems work very similar except for the electronics and pressures but i attached the documents to explain how the Cummins system works since i think they are similar i also found a link on how to bleed a john deere engine http://www.google.com/url?sa=t&rct=j...cek2H5ZgUqZQ9e
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    Last edited by bmichael; 04-15-2018 at 01:29 AM.
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    So, how's the in-line filter under the L. floorboard? Might have picked up enough gunk from the tank to plug when the repriming business was going on. This filter should be changed way more often than most do it...
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    Quote Originally Posted by HydroHarold View Post
    So, how's the in-line filter under the L. floorboard? Might have picked up enough gunk from the tank to plug when the repriming business was going on. This filter should be changed way more often than most do it...
    What HH said. There is another filter under tank in case you didn't know. Didn't see you mention it in your post.
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    To answer your question, no the engine won't run if the pump died. That's why it's there. It's a noisy little thing and you should hear it clicking when the key is on but the engine off. You mentioned that your pump has never made noise/clicking. You should be able to feel it then if it's working, at least some.

    When I changed my filter at the engine, I forgot to turn the fuel shutoff back on. When I turned the key on to prime the bowl, the pump didn't work. When I turned the shutoff back on the pump worked and primed the bowl. I didn't look hard, but there must be an electrical connection somewhere that disconnects the electrical circuit to the pump when the shutoff is closed. I looked at the parts catalog for my year tractor and found a electrical connector on the wiring harness called fuel shutoff solenoid connector (if I recall correctly). That makes sense in my case.

    So...
    Make sure your shutoff is completely on. Might try closing and opening a couple times. Try the ignition (key on, engine off) see if the pump "clicks". If not, disconnect the electrical connector from the pump and use a volt meter set to DC, to see if you are getting 12 volts when you turn the key on to run position. That'll tell you if it's the pump or if it's even getting power.

    If you're satisfied the pump is working, change the under floorboard filter. It's most likely not letting enough fuel through to get to the pump. They are only about $5.

    Let us know.

    P.S. As Case said, DO NOT use starting fluid. You're asking for more trouble.
    Last edited by kylew; 04-15-2018 at 05:52 AM.
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    Been almost there

    We ran the fuel out of an IH 784 and absolutely drove ourselves nuts with similar issues. In our case, it turned out that debris had plugged the line coming out of the tank.

    I doubt you have that issue but I would start at the tank and crack couplings to see if you have fuel flow. If you do, then move to the next spot coupling in the line. The post about the fuel shut off solenoid sounds likely but if you trace it systematically, you will know for sure where the issue is.

    Cracking low pressure or no pressure lines is just messy. Cracking high pressure lines can be dangerous. Lay a cloth over the line to slow down the high pressure fuel. If you want to watch, make sure you have eye protection and protection for exposed skin. Diesel injected under the skin isn't good for your complexion or health.

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    Quote Originally Posted by Treefarmer View Post
    We ran the fuel out of an IH 784 and absolutely drove ourselves nuts with similar issues. In our case, it turned out that debris had plugged the line coming out of the tank.

    I doubt you have that issue but I would start at the tank and crack couplings to see if you have fuel flow. If you do, then move to the next spot coupling in the line. The post about the fuel shut off solenoid sounds likely but if you trace it systematically, you will know for sure where the issue is.

    Cracking low pressure or no pressure lines is just messy. Cracking high pressure lines can be dangerous. Lay a cloth over the line to slow down the high pressure fuel. If you want to watch, make sure you have eye protection and protection for exposed skin. Diesel injected under the skin isn't good for your complexion or health.

    Treefarmer
    Hmmm, that must be common with the 784's. We had a similar issue and found a small fir branch inside the fuel line. There was also debris stuck in the elbow for the fuel filter housing. Once cleared out and put back together it still wouldn't start because it's gravity feed to the pump. I ended up putting a little air pressure in the tank, then cracked the lines open until fuel came out. I kept doing that until I had fuel at the pump and it started right up.
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    Quote Originally Posted by CaseIH574 View Post
    You might also try and fill the fuel tank to the top of the tank. This might give you some gravity feed to the fuel system
    This is what I was going to suggest trying. It worked for me one time. I changed the fuel filter and sediment bowl on a 1025r and it would start, but stall out or start and run super rough without smoothing out. I turned off and filled the tank full. Turned it back on and ran rough for a couple seconds and then smoothed right out. Worth trying at least.

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