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  1. #1
    Member
    Join Date
    Jul 2006
    Posts
    48
    Location
    Newman Lake, WA
    Tractor
    CK25HST

    Default CK25 cold (hard) starting below 55?

    I'm sure this problem becomes more popular as winter approaches. Out here on the west coast, it isn't winter quite yet. Here's the question/problem.

    CK25 with 90 hours. Hard to start when temp drops slightly below 55 degrees. One GP cycle (8 seconds) doesn't work. It usually takes four cycles (32 seconds) before the engine will turn-over and start. Anything less and it's unburned fuel coming from the exhaust. Battery is new, good connections and the engine turns over well. Once started it runs fine.

    Checked the voltage at the glow plugs and it's 11-12vdc for the 8 second cycle. That looks good.

    If it's difficult to start between 50-55 degrees - I'm sure it's going to be a pain at 30.


    Any recomendations?

    Thanks

  2. #2
    Gold Member bearhawk's Avatar
    Join Date
    Aug 2005
    Posts
    489
    Location
    Milton, New Hampshire
    Tractor
    Kioti CK20HST

    Default Re: CK25 cold (hard) starting below 55?

    Last winter I found a trick with my CK20.

    Turn Key to pre-heat, when light clicks off, crank engine.

    After the engine starts to fire, just release the key slightly and the glow plugs will light. Keep the engine running with the plugs lit until there is enough heat to keep it going.

    Throttle should be slightly under 1/2 until it runs smooth, then drop to 1400 or so for the warm up.

    Cheers

  3. #3
    Platinum Member
    Join Date
    Apr 2003
    Posts
    927
    Location
    Olathe, KS

    Default Re: CK25 cold (hard) starting below 55?

    I would verify that all glow plugs are working properly.
    Jon DePratt

  4. #4
    Veteran Member
    Join Date
    Sep 2005
    Posts
    1,311
    Location
    In the palm of Michigan's Lower Peninsula
    Tractor
    Kioti CK30HST, KL130 FEL, turf tires

    Default Re: CK25 cold (hard) starting below 55?

    Have you checked the fuel filter?

    Try soaking the fuel filter in Kerosene and (lightly) blowing it out with compressed air.

    My thought is.....there could be a wax build up on the fuel filter, enough to slow the flow of fuel at start up.

    Don

  5. #5
    Elite Member DieselPower's Avatar
    Join Date
    Sep 2006
    Posts
    2,761
    Location
    Fairfield, PA
    Tractor
    JD 3020, JD 4230, JD 7410, JD 2440, MF 750, NH LS170

    Default Re: CK25 cold (hard) starting below 55?

    I would test the glow plug system for faulty plugs and replace as needed.

    I don't think I would worry about the fuel gelling at 55 degree's, definately not cold engough to solidify wax particles in diesel fuel.

    It wouldn't hurt to check the fuel filter though. If it's full of black slime you will need to treat your fuel with a bactericide to kill any microbial growth in the system.

  6. #6
    Super Member Highbeam's Avatar
    Join Date
    Feb 2005
    Posts
    5,039
    Location
    South Puget Sound, WA
    Tractor
    Kioti CK30HST

    Default Re: CK25 cold (hard) starting below 55?

    Something isn't right. Where is the throttle set when you are cranking? Mine easily starts at 30 after being trailered for 50 miles so it is cold. In our relatively moderate climate there should be no issues starting a Kioti. Our diesel is always number 2.

    I start with the throttle set to low idle until the oil pressure light goes off and then raise the RPMs to 1250 for warm up. I've always gotten just a single puff of black smoke at startup and I always use a single full glow plug cycle.

    I assume you are using 15w-40 oil? The fuel filter should still be nice and clean at 90 hours.
    Kioti CK30HST, FEL w/toothbar, 60" RC, 60" BB, PJ 10k trailer. Weekend warrior hauling 50 miles each way.

  7. #7
    Member
    Join Date
    Jul 2006
    Posts
    48
    Location
    Newman Lake, WA
    Tractor
    CK25HST

    Default Re: CK25 cold (hard) starting below 55?

    Interesting suggestions...

    I've checked the fuel filter (nice & clean). Seem to be getting ample fuel (blue smoke from the exhaust when cranking). Runs like normal once started.

    I usually start the tractor with the throttle in the low position. I've tried various throttle positions - no difference.

    Oil/filter is what the dealer recommended (changed at 50 hours).

    I suspect glow plugs - but all three (bad) at 90 hours?? I checked the voltage at each GP - looks good.

    Any suggestions on which type of glow plugs these are? If I have to take them out to test them, might as well replace them with new ones. Can't be that expensive.

  8. #8
    Platinum Member
    Join Date
    Feb 2004
    Posts
    937
    Location
    15 mi. N. of Winchester VA
    Tractor
    CK30HST

    Default Re: CK25 cold (hard) starting below 55?

    Some lack of compression somewhere, is there a device that lowers compresson for starting?

    Have you added something to take out any water in the fuel?

    CK30 starts without glow plugs at 55...not bad at 20F with single glow plug run.

    I would think you could test resistance of glow plugs using ohmmeter when installed.

    MIke

  9. #9
    Platinum Member BTI's Avatar
    Join Date
    Feb 2002
    Posts
    756
    Location
    Nelsonville, Ohio
    Tractor
    Haven't decided yet......It'll be a Kioti None the less

    Default Re: CK25 cold (hard) starting below 55?

    Make sure all of the engine shut down equipment is returning to the start position.
    Sometimes the cable will hang up and not allow it to return to the start position
    If the solenoid doesn't return to the start position it will start hard.

    BTI
    **EARTH FIRST----We'll Clear-cut the other planets LATER**

    *******The poster formerly known as Kiohio******

    740-753-9242

  10. #10
    Silver Member
    Join Date
    Aug 2004
    Posts
    134

    Default Re: CK25 cold (hard) starting below 55?

    Good info here, as usual.

    I'm curious about starting RPM. I was advised years ago that automobile engines should be held at 1200~1500 RPM until warm. Higher would risk under-lube from viscous oil, and lower would risk under-lube from low oil flow.

    This CK20 is the first diesel I've owned, and I'd like to to outlive me. I currently start and warm it up at about 1200 RPM; half-throttle seems fast.

    Other thoughts?

    Thanks-

    Chelydra

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