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  1. #1

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    I am looking at buying a new (to me) Yanmar tractor. Looking at 20-30hp models. I am staying away from the ones that continuously smoke or that will only crank if u pull the decompression lever. Here is my question: I'm running in to a few tractors that will only crank from a cold start if u heat the glow plugs (or thermal whatever). By cold I mean hasn't been ran in a few days. Temps are 70+. Is this also a sign of engine wear. Should I shy away from this issue also? Ive seen this on 2&3 cylinders on a ym2200, 2310d, and a 2610. They do this yet they don't have any blow by. I'm buying used from individual owners and trying to do all my homework as I can't afford to go to Fredericks and buy a really nice one nor can I afford to make a $3000 bad decision. My 2220 I sold would crank at almost any temp after turning it over no more than 3 or 4 times regardless of any Alabama temp. Any help is greatly appreciated. Thx!
    Last edited by jb2010; 05-05-2013 at 07:05 PM.

  2. #2
    Silver Member
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    Jul 2009
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    127

    Default Re: Looking for yanmar advice

    Some engines are more finicky than others when cranking... ive got a new Miller bobcat welder I got with zero hours on it. Even when temps are 80 degrees you have to glow plug it when first cranking. I see this a lot on the smaller 2 and 3 cyl diesels.

  3. #3

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    Thx for the input. Anyone else?

  4. #4
    Gold Member
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    NSW Australia
    Tractor
    Tractors16-600hp Farm & Earthmoving Equip, Trucks etc.

    Default Re: Looking for yanmar advice

    Having to heat the glow plugs when cold isn't indicative of any issue, providing the tractor then starts quickly without excessive cranking & all other signs are ok (e.g post initial start up no smoke, no blow by ...etc.)
    It's quite common/recommended on many small (low tech) Japanese diesel iengines to always use glow plugs when cold & irrespective of the prevailing ambient temperature - but if the engine then takes more than 10 seconds to fire I'd be finding another machine to invest my $'s.

  5. #5

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    Good deal. Thx!

  6. #6
    Gold Member
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    Aug 2008
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    Location
    Darlington, SC
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    1957 Ferguson 35, 1977? Yanmar 2200, 1963 Cub Cadet Original

    Default Re: Looking for yanmar advice

    I've had my 2200 for 15 yrs and always have to cold start it by using the glow plugs. A well charged battery is important for good quick starts. Having to use the glow plugs is not a sign of wear or problems, it's normal for that model.

    FYI, the 2200 is a good strong older model but it is somewhat the rare breed too. It's known as a "grey market orphan", meaning it was only built 1-2 yrs, parts are a lil harder to find. I'd already bought mine when I learned this. Still a good tractor by all means though.
    modify, adjust and improvise....a country boy can survive

  7. #7

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    Very good info!!
    The 2610 I looked at was the same way. (With the glow plugs) It's a little bigger but works great also. Would it be a better buy than the 2200? I found out the 2200 has a broken cable for the tachometer. He said he replaced it and it worked for a few minutes and broke again..? Not sure what that's about. Any clues on the better route to take?

  8. #8
    Silver Member
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    Default Re: Looking for yanmar advice

    a tach that doesnt work wouldnt stop me from buying a machine if thats it only "problem" ...tons of tractors running around without working tachs and they still do a fine job. Most all injector pumps have throttle stops on them to keep from over revving the motor.

  9. #9
    Super Member jerrybob's Avatar
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    Mar 2010
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    Southwest Washington
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    yanmar 186D....JD LT180....DR Brush Cutter

    Default Re: Looking for yanmar advice

    I think most Yanmar diesels will have some smoke. I have a 186d......I use the thermostart on all cold starts and the decompression lever. It designed that way....even says it in my manuals. Tractor runs like a champ....blows a little smoke under load......a little work horse!
    I Intend to Live Forever.....So Far....So Good!

    My memory's not as sharp as it used to be.
    Also, my memory's not as sharp as it used to be.

  10. #10
    Elite Member
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    Red Bluff, CA
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    Changes often!

    Default Re: Looking for yanmar advice

    3-cylinder Yanmars will generally start quickly at 70 degrees without glow-plugs. They even start well at 50 degrees and a little cooler. That is not the case with many small diesel engines. Many brands of small diesel engines require a little glow plug if the engine is "room temperature" even in the summer, but not the little Yanmars in my experience anyway.

    But as mentioned, if a little glow or thermo-start will make it fire right up and you do not have any noticeable blow-by, then I'd think the rings are still sealing well and you should be fine.

    Somebody can probably chime in an explain direct vs indirect injection and pre-combustion chambers and all that stuff and explain why some diesel designs fire up so well and so need glow.
    Dave
    Dave's Tractor, Inc.
    Red Bluff, California

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