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  1. #11
    Elite Member Car Doc's Avatar
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    Mar 2009
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    3,246
    Location
    Kansas
    Tractor
    YM3810D Yanmar

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    I would be happy to help you (and anyone else either) if the tractor was here. Guarantee we could salvage it and you could go on with life and I am not joking it wouldn't be 5 grand all over again. I can only imagine what the inside of it looks like after the "overhaul". I only hope the next guy you find is not a shyster like the last ones were it should last you a lifetime seriously you can expect that. It could be missing simply because it could have a tight valve but who knows.
    Yanmar YM3810D, LT duty 3pt hoe, 6' KK2 tiller, 6' KK box blade, 6 1/2' KK disc, 5' Howse bush hog, 5' Howse back blade, 9" Yellow PHD, 3 Husky chain saws 346XP NE, 359, 372XP. 07 HD Heritage Softail, Crack injectors, check compression, take 2 beers and call me. "Hey you didn't build that."

  2. #12
    Super Member kenmac's Avatar
    Join Date
    Feb 2005
    Posts
    6,738
    Location
    The Heart of Dixie
    Tractor
    yanmar 3110D

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    Not bashing you So,I hope you don't take my comment that way .I really hope you can get everything straighten out for a fair price.That said, We have heard stories like this many times from people that bought a VN rebuild tractor.Again not bashing anyone with a VN recon.as,some menbers have had good luck with them,but IMO, it's a crap shot. You should take it back to the repair shop that attemped to repair the tractor and ask for your $$ back or repair the tractor properly.There's no telling from behnd a computer what he has done to your tractor incorrectly. I wish you the best
    Last edited by kenmac; 01-16-2013 at 07:32 PM.
    A Fredricks Yanmar 3110D
    07 Dodge 2500 5.9 Cummins
    Husky 372xp
    Husky 55 Rancher
    Maruyama trimmer
    Husky trimmer
    Redmax BP blower
    Toro zero turn
    North Star 4 K PSI pressure washer
    Honda 300 4 trax
    Yamaha Timberwolf
    liquid logic coupe kayak
    16' Tow Master Dump Trailer ,20' Yanmar Hauler

  3. #13
    Veteran Member tractorErnie's Avatar
    Join Date
    Mar 2002
    Posts
    2,228
    Location
    in the palm trees
    Tractor
    Yanmars = Fx235- F255- FX33 - hinomoto JF1 New Holland 7610 Branson 3510 tlb

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    Ive had an FX335-D for 4 yrs now,its my second one, I put new rings in because it smoked a lot but it purred like a kitten. After the ring job it still smokes a little, but not like before the new rings. If I were you, I would pull the injectors out and have a diesel shop check them out and either clean or replace them.
    Also I would run synthetic oil in the engine that seemed to help our tractor smoke a little less.
    Also they are a 4 cylinder.

    Ernie

  4. #14
    Super Member California's Avatar
    Join Date
    Jan 2004
    Posts
    7,156
    Location
    Sonoma County
    Tractor
    Yanmar YM240, and now just one YM186D

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    TDP, it sounds like your mechanic doesn't have experience with anything similar.

    Yanmar was building the engines, and in some cases the entire tractor, for John Deere during the era when your tractor was built.

    I think an experienced Deere mechanic would understand it easily, and could get it straightened out. I would start there.

  5. #15
    Platinum Member Neat 1500's Avatar
    Join Date
    Aug 2009
    Posts
    704
    Location
    Melbourne,Australia
    Tractor
    Yanmar YM1500 Red & YM14 MkII

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    Any 1/2 decent diesel mechanic should be able to fix it no matter what it is. brand is not relevant at all, they all are built and run on the same principles. i get a bee in my bonnet when they give excuses like" dunno whats wrong with it, take it to a (brand X) dealer". i am an electrician by trade and we dont go saying " oh i cant find the fault in your house, i dont use that brand of cable or outlet........."
    Paul YM1500 & YM14 MkII

  6. #16
    Silver Member firemanmike69's Avatar
    Join Date
    Dec 2012
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    233
    Location
    albany ny
    Tractor
    none yet

    Default

    Quote Originally Posted by Katahdin View Post
    If you have a temp gun ($30 at harbor freight) check the temperature of each cylinder's exhaust ports. A low temp would narrow the problem to that cylinder and troubleshoot from there. If you don't have a temp gun, a less scientific method is to spritz on water and it'll evaporate on the good cylinder exhaust ports.

    Also, check fluids for signs of the oil/coolant mixing. Is there oil under your radiator cap? Is the level on the oil dipstick increasing?
    You can also crack injector lines one at a time while it's running and listen for the engine sound to change, it should lug the engine down each time if it doesn't thats the dead cylinder

  7. #17
    New Member TDP's Avatar
    Join Date
    Feb 2012
    Posts
    23
    Location
    Tyler, Texas
    Tractor
    Yanmar Fx 335

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    Ernie, It is a 4 cylinder. They supposedly replaced all 4 injectors. Talked to them today and they want me to bring it back for the 3rd time. It took them 3 months to rebuild it, 3 weeks this last trip, and who knows what down time the next trip will be. If I knew what to do I would do it myself. I think I will try synthetic oil. What brand do you recommend? TY!

  8. #18
    Veteran Member
    Join Date
    Jun 2010
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    1,461
    Location
    Southern California
    Tractor
    International Harvester 284, Yanmar 1401D, Yanmar 240, and others...many others...

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    I wouldn't spend any more money putting synthetic oil into the engine. You have problems worse than that, there's no reason dumping good money after bad.

  9. #19
    Elite Member Car Doc's Avatar
    Join Date
    Mar 2009
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    3,246
    Location
    Kansas
    Tractor
    YM3810D Yanmar

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    I would stay away from synthetics also these engines are so loose tolerance you couldn't keep it in, that would make it worse not better.
    Yanmar YM3810D, LT duty 3pt hoe, 6' KK2 tiller, 6' KK box blade, 6 1/2' KK disc, 5' Howse bush hog, 5' Howse back blade, 9" Yellow PHD, 3 Husky chain saws 346XP NE, 359, 372XP. 07 HD Heritage Softail, Crack injectors, check compression, take 2 beers and call me. "Hey you didn't build that."

  10. #20
    Elite Member
    Join Date
    Dec 2009
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    3,511
    Location
    gilmer tx
    Tractor
    Bobcat CT235

    Default Re: Yanmar FX 335-hard to start and sounds like it's missing at low rpm.

    One good thing is they haven't give up. Maybe they will get it this time. I agree, oil is not the problem.

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