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  1. #1
    Join Date
    Apr 2012
    Location
    Western Kentucky
    Posts
    118

    Default Bobcat 250 starting question

    This is the first Bobcat I've owned. Right after initial start it runs fast then after a few seconds it finally idles down. Never thought running cold engines wide open when they're cold was good for them. Is there anyway to adjust that out to allow a proper slow speed warm up?
    I guess the fact that they've been running for thousands of hours without problems settles the argument, but it just goes against what I've been taught about running cold air cooled engines hard right after initial start.
    Syncrowave 200
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    "I'm a slow walker, but I never walk backwards" - Abraham Lincoln

  2. #2
    Join Date
    Sep 2005
    Location
    northern NJ
    Posts
    1,847

    Default

    I agree. I cringe when starting mine in the winter but that's how they are.
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  3. #3

    Default

    My Trailblazer does the same thing. I bought it new and it has done this since day one. Sort of like cars with a carburetor the butterfly stays closed until the engine warms up.

  4. #4
    Join Date
    Apr 2012
    Location
    Western Pa.
    Posts
    220

    Default Bobcat 250 starting question

    I'm the same!! Makes me cringe every time I start mine. I never rev a motor up till has good oil pressure and cyl. temp is up. That's basic engine 101. And if I would have reved a cold engine up as a kid a would have got slapped up side the head, & well deserved. I hate to start my Big 40 Diesel cold.
    Agreed they do last but how much longer and less repairs would u have if we're set up correct.
    I always run high quality oil and good additive such as Lucas or equivalent to keep damage at Min. Still makes me cringe every start.

  5. #5
    Join Date
    Apr 2012
    Location
    Western Kentucky
    Posts
    118

    Default

    Quote Originally Posted by gnforge View Post
    I'm the same!! Makes me cringe every time I start mine. I never rev a motor up till has good oil pressure and cyl. temp is up. That's basic engine 101. And if I would have reved a cold engine up as a kid a would have got slapped up side the head, & well deserved. I hate to start my Big 40 Diesel cold.
    Agreed they do last but how much longer and less repairs would u have if we're set up correct.
    I always run high quality oil and good additive such as Lucas or equivalent to keep damage at Min. Still makes me cringe every start.

    I believe I've figured out how to partially reduce the fast run time after start.
    After the engine fires, and go to the "Run/idle" position, then go to "run", then back to "run/idle". As soon as you hit the run/idle position the second time, it immediately idles down.
    It reduces the fast run time to at least 1/3 of its normal fast run time had you initially stayed in the run/idle selection.
    It seems to outsmart the electronics and idles down sooner.
    Syncrowave 200
    Millermatic 252
    Spoolmatic 30A aluminum gun
    Miller Spectrum 625 X-Treme
    Maxstar 150 S
    Miller Bobcat 250
    Sketchup 8 Pro

    Two big fire extinguishers

    "I'm a slow walker, but I never walk backwards" - Abraham Lincoln

  6. #6
    Join Date
    Feb 2012
    Posts
    226

    Default

    I hope that's not hard on the run idle. I guess its a trade off which is harder on the unit.

  7. #7
    Join Date
    Apr 2012
    Location
    Western Kentucky
    Posts
    118

    Default

    Quote Originally Posted by Kpack View Post
    I hope that's not hard on the run idle. I guess its a trade off which is harder on the unit.
    Could you or someone elaborate on this run-idle system? What's the difference between me running beads and it cycling between run and idle, and I doing it with the switch?
    Syncrowave 200
    Millermatic 252
    Spoolmatic 30A aluminum gun
    Miller Spectrum 625 X-Treme
    Maxstar 150 S
    Miller Bobcat 250
    Sketchup 8 Pro

    Two big fire extinguishers

    "I'm a slow walker, but I never walk backwards" - Abraham Lincoln

  8. #8
    Join Date
    Feb 2012
    Posts
    226

    Default

    I don't know I'm just scared to mess with that switch . But I also understand your concern about running at high rpm when started up maybe some of the experts will weigh in. My bobcat is so cold natured it takes awhile to be able to idle down surge.

  9. #9
    Join Date
    Dec 2007
    Location
    Oklahoma
    Posts
    705

    Default

    Quote Originally Posted by Gobysky View Post
    This is the first Bobcat I've owned. Right after initial start it runs fast then after a few seconds it finally idles down. Never thought running cold engines wide open when they're cold was good for them. Is there anyway to adjust that out to allow a proper slow speed warm up?
    I guess the fact that they've been running for thousands of hours without problems settles the argument, but it just goes against what I've been taught about running cold air cooled engines hard right after initial start.
    I was taught the same as you. However, with age, experience, and education, I have learned this is the best way to start these engines.

    Let the howling begin.

    Griff

    P.S.
    Take Cruizer's advice and switch your oil to Castrol Syntec 5w50
    Last edited by griff01; 03-08-2014 at 10:46 AM. Reason: addition

  10. #10
    Join Date
    Apr 2012
    Location
    Western Kentucky
    Posts
    118

    Default

    Quote Originally Posted by griff01 View Post
    I was taught the same as you. However, with age, experience, and education, I have learned this is the best way to start these engines.

    Let the howling begin.

    Griff

    P.S.
    Take Cruizer's advice and switch your oil to Castrol Syntec 5w50

    I have the gas engine. Was that 5w50 meant for the gas or the diesel?
    Syncrowave 200
    Millermatic 252
    Spoolmatic 30A aluminum gun
    Miller Spectrum 625 X-Treme
    Maxstar 150 S
    Miller Bobcat 250
    Sketchup 8 Pro

    Two big fire extinguishers

    "I'm a slow walker, but I never walk backwards" - Abraham Lincoln

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