Page 2 of 5 FirstFirst 12345 LastLast
Results 11 to 20 of 47
  1. #11
    Gold Member crazyangel's Avatar
    Join Date
    Feb 2012
    Posts
    329
    Location
    Western New York
    Tractor
    Kubota L5740-HST; Kubota RTV900

    Default

    Sounds like a cold start on my L5740. I have found that having the throttle set for 1500 rpm makes it start up the smoothest. Congrats on your new tractor!

  2. #12
    Platinum Member Buckgnarly's Avatar
    Join Date
    May 2012
    Posts
    528
    Location
    West topsham VT
    Tractor
    Kioti DS3510

    Default Re: New MX5100 smokes/coughs on startup

    My Kioti did the same thing since I got it new in June, and was quite hard to start the other cold morning. I checked the voltage at the glow plug ( light was coming on and relay was clicking, but that can mean nothing) and got nothing. Turns out the wiring harness was never hooked up when assembled! Starts with zero smoke and on first crank now.

  3. #13
    Gold Member FatTire's Avatar
    Join Date
    Oct 2007
    Posts
    380
    Location
    Colorado
    Tractor
    Kubota MX5100, Unimog 404 w/ snowblower, Deere UTV w/plow

    Default Re: New MX5100 smokes/coughs on startup

    Quote Originally Posted by Buckgnarly View Post
    My Kioti did the same thing since I got it new in June, and was quite hard to start the other cold morning. I checked the voltage at the glow plug ( light was coming on and relay was clicking, but that can mean nothing) and got nothing. Turns out the wiring harness was never hooked up when assembled! Starts with zero smoke and on first crank now.
    That's interesting. I assume the glow plugs should be 12V?

  4. #14
    Member
    Join Date
    Oct 2010
    Posts
    41
    Location
    SE Ohio
    Tractor
    Kubota MX5100, Massey 231

    Default Re: New MX5100 smokes/coughs on startup

    Quote Originally Posted by FatTire View Post
    That's interesting. I assume the glow plugs should be 12V?

    Well, it's a 12 volt starting system, so I'd assume that is the case.

  5. #15
    Member
    Join Date
    Oct 2010
    Posts
    41
    Location
    SE Ohio
    Tractor
    Kubota MX5100, Massey 231

    Default Re: New MX5100 smokes/coughs on startup

    Quote Originally Posted by Pharm View Post
    Mine blows white smoke briefly on first start up of the day - no coughing though. I've not had to use the glow plugs yet. Smooth start every time so far.
    I wouldn't say my smoking is brief, and "coughing" isn't brief either. It misses or coughs pretty severely for at least 5 seconds, and probably closer to 8 or 10.

  6. #16
    Elite Member Ken45101's Avatar
    Join Date
    Feb 2009
    Posts
    3,302
    Location
    southern Ohio
    Tractor
    Kubota M5040, M9540, B21 TLB, B2710, RTV900, JD 325 Skid steer, KX-121-3 mini excavator

    Default Re: New MX5100 smokes/coughs on startup

    This discussion has me thinking. My skid steer does exactly as described and in cold weather it can take 30 seconds to smooth out and stop smoking. It's done it since it was new. My son (who is a shop foreman at a different dealer) thought it was probably the injectors leaking while it is shut off and allowing fuel into the cylinder. I should have done something about it while it was under warranty but I procrastinated since it wasn't too bad in normal weather. Now I'm beginning to wonder if the glow plug isn't working correctly.

    Ken

  7. #17
    Platinum Member Buckgnarly's Avatar
    Join Date
    May 2012
    Posts
    528
    Location
    West topsham VT
    Tractor
    Kioti DS3510

    Default Re: New MX5100 smokes/coughs on startup

    You know, I did not even bother to check after connecting. I think my 7.3 IDI is actually 6v for the glow plugs, though I could be wrong and thinking of some other diesel engine.

  8. #18
    Elite Member Ken45101's Avatar
    Join Date
    Feb 2009
    Posts
    3,302
    Location
    southern Ohio
    Tractor
    Kubota M5040, M9540, B21 TLB, B2710, RTV900, JD 325 Skid steer, KX-121-3 mini excavator

    Default Re: New MX5100 smokes/coughs on startup

    Quote Originally Posted by Buckgnarly View Post
    You know, I did not even bother to check after connecting. I think my 7.3 IDI is actually 6v for the glow plugs, though I could be wrong and thinking of some other diesel engine.
    Unless you have two 6-volt ones connected in series, I don't know where you would get 6 volts to energize them.

    Ken

  9. #19
    Platinum Member Buckgnarly's Avatar
    Join Date
    May 2012
    Posts
    528
    Location
    West topsham VT
    Tractor
    Kioti DS3510

    Default Re: New MX5100 smokes/coughs on startup

    Quote Originally Posted by Ken45101 View Post
    Unless you have two 6-volt ones connected in series, I don't know where you would get 6 volts to energize them.

    Ken
    I think I may be thinking of people that run the lower voltage plugs in the 7.3, I think the IDI runs 12v to the glowplugs but again, not positive of that.

  10. #20
    Member
    Join Date
    Oct 2010
    Posts
    41
    Location
    SE Ohio
    Tractor
    Kubota MX5100, Massey 231

    Default Re: New MX5100 smokes/coughs on startup

    Quote Originally Posted by Ken45101 View Post
    This discussion has me thinking. My skid steer does exactly as described and in cold weather it can take 30 seconds to smooth out and stop smoking. It's done it since it was new. My son (who is a shop foreman at a different dealer) thought it was probably the injectors leaking while it is shut off and allowing fuel into the cylinder. I should have done something about it while it was under warranty but I procrastinated since it wasn't too bad in normal weather. Now I'm beginning to wonder if the glow plug isn't working correctly.

    Ken
    Of course, reading the owners manual for the MX5100, it suggests not even bothering to use the glow plugs if the ambient temp is above approximately 40 degrees F. The instructions say to attempt a start without, and if the tractor fails to start, then hit the glow plugs for 10 seconds before hitting the starter again.

    I will try advancing the throttle before starting to mid level. I've left it at a slow idle to start. Perhaps that will help.

Page 2 of 5 FirstFirst 12345 LastLast

Similar Threads

  1. rtv smokes on Startup
    By Lem in forum ATVs & Utility Vehicles
    Replies: 3
    Last Post: 09-27-2012, 11:21 AM
  2. SLT 1554 smokes on startup?????
    By tbear in forum Cub Cadet Tractors
    Replies: 15
    Last Post: 07-01-2006, 12:23 AM
  3. 4120 smokes...
    By jtfx6552 in forum John Deere Owning/Operating
    Replies: 3
    Last Post: 02-28-2006, 04:09 PM
  4. New LT 1046 Smokes
    By AL_Josh in forum Cub Cadet Tractors
    Replies: 3
    Last Post: 07-06-2005, 11:49 PM
  5. 2210 smokes on startup
    By horseman1 in forum John Deere Owning/Operating
    Replies: 52
    Last Post: 11-17-2004, 11:28 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.