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  1. #1
    Silver Member
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    May 2008
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    232
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    SW Washington
    Tractor
    L2550

    Default Compression tester

    Who sells a compression testers for Kubotas? I have an L2550.

  2. #2
    Veteran Member DiezNutz's Avatar
    Join Date
    May 2006
    Posts
    1,019
    Location
    Central MD
    Tractor
    Kubota B3030-HSD-F

    Default Re: Compression tester

    Many Diesel compression testers have common adapters included or available to fit most anything, including Kubotas. They'll usually say so right on the box/product description.
    Just shop around.

    Even Harbor Freight's tester lists Kubotas, if you want an econo model.
    Kubota B3030-HSD w/R4s, LA403 60" FEL w/ATI TB, RCK60" MMM, Woods BH80-X 4pt Hoe w/24"+12" bkts & Thumb, Woods RB72" Blade w/shoes

  3. #3
    Silver Member
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    May 2008
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    111
    Location
    Sergentsville, NJ (Western NJ, the good part!)
    Tractor
    2003 B7800

    Default Re: Compression tester

    I know where you put a compression tester on a gasoline engine (where the spark plug is). Where do you put it on a diesel engine? Injector? Glow Plug?
    Dr. Bob
    2003 B7800, FEL, 5' Brushhog, PHD, Spreader, Chain Harrow

  4. #4
    Veteran Member DiezNutz's Avatar
    Join Date
    May 2006
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    1,019
    Location
    Central MD
    Tractor
    Kubota B3030-HSD-F

    Default Re: Compression tester

    Yes either injector or glow plug. Depends on the tester, some have fittings for one or the other, or both.

    I'd say glow plug is most common, and usually easiest because you don't have screw with injector lines/possible contamination, and replacing heat shields/gaskets, which you're supposed to do whenever you remove an injector.
    Kubota B3030-HSD w/R4s, LA403 60" FEL w/ATI TB, RCK60" MMM, Woods BH80-X 4pt Hoe w/24"+12" bkts & Thumb, Woods RB72" Blade w/shoes

  5. #5
    Veteran Member rbargeron's Avatar
    Join Date
    May 2000
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    2,442
    Location
    MA
    Tractor
    L5450, L48, L3250, L345

    Default Re: Compression tester

    I agree the glow plug holes are easier access - also good time to test them (connect 12v jumper cables & see if the end gets red). What symptom does your L2550 have that is prompting a compression test?
    L5450, L48, L3250, L345, never enough attachments

  6. #6
    Veteran Member
    Join Date
    Sep 2004
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    2,403
    Location
    Kansas, Butler county, Just east of DooDah
    Tractor
    Kubota L4200 GSTCA

    Default Re: Compression tester

    When you do connect the compression gage, remember to disable fuel flow at the rack. You do not want the cylinder to get any fuel while spinning the engine over during test. It will blow up your test system... KennyV

  7. #7
    Silver Member
    Join Date
    May 2008
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    232
    Location
    SW Washington
    Tractor
    L2550

    Default Re: Compression tester

    Quote Originally Posted by rbargeron View Post
    I agree the glow plug holes are easier access - also good time to test them (connect 12v jumper cables & see if the end gets red). What symptom does your L2550 have that is prompting a compression test?
    Quite a bit of black smoke under load.

  8. #8
    Platinum Member
    Join Date
    Feb 2005
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    626
    Location
    Southern Indiana
    Tractor
    BX23

    Default Re: Compression tester

    Black smoke under load is good. Have you ever seen a semi pulling a load up a big hill or away from a stop light? Lots of black smoke.
    ron

    I was better, but I got over it.

    Life may change us, but we start and end with family.

  9. #9
    Silver Member
    Join Date
    May 2008
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    232
    Location
    SW Washington
    Tractor
    L2550

    Default Re: Compression tester

    Quote Originally Posted by 638 View Post
    Black smoke under load is good. Have you ever seen a semi pulling a load up a big hill or away from a stop light? Lots of black smoke.
    This is new. I have about 5000 hours in the tractor and this has become more pronounced in recent months.

  10. #10
    Platinum Member
    Join Date
    Feb 2005
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    626
    Location
    Southern Indiana
    Tractor
    BX23

    Default Re: Compression tester

    That changes the equation, your probably due for a top overhaul.
    ron

    I was better, but I got over it.

    Life may change us, but we start and end with family.

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