Page 1 of 3 123 LastLast
Results 1 to 20 of 49

Thread: Cold start

  1. #1
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161

    Cold start

    http://www.youtube.com/watch?v=Sgt7GJB25Nk

    I was afraid when the cold weather comes problem will come back. Bike doesn't want to start easily. Every morning I'm having this problem it goes away if the bike is warm. Battery is fine tested with hi amp battery - same results. Full service done recently at Griffs + recent tune up few weeks ago as well. Axone shows some general electric fault if starts from cold and not showing when bike is warm.
    Troubleshooting steps done so far: Replaced clocks, ecu - all good. Cleaned airbox min regulation valve. Had a look at temp sensor, seems to be working fine I guess, but the data was different from the manual (2.2kOhm instead 2.5kOhm at 20celcius).
    I don't know if someone might had similar problems? Any advise is welcome. Thanks

  2. #2
    WSB Pit boss grin factor's Avatar
    Join Date
    Aug 2009
    Location
    Sunderland
    Posts
    5,028
    Sounds like a fueling issue to me. Like its running lean. If it had a choke I'd say it wasn't on, that type of thing - sorry for sounding fick, but you get my drift. My bike has done it once, was onlt running on 1 pot for a few seconds ebfore chiming in.

  3. #3
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161
    I agree, but all fueling is controlled by something like electronic choke - now me sounding fick ))) but its not ECU

  4. #4
    Baby Twin Judge's Avatar
    Join Date
    Nov 2009
    Location
    East Anglia
    Posts
    59
    Isn't it an ignition advance like on the tuoldo on the left handlebar?

  5. #5
    AMA Pit Boss Keith B's Avatar
    Join Date
    Oct 2010
    Location
    The Fens.
    Posts
    2,230
    Quote Originally Posted by Judge View Post
    Isn't it an ignition advance like on the tuoldo on the left handlebar?
    Ignition advance??Dont think they have been used on a bike since the '60's.You sure its not acold start mixture enriching lever?
    Anyroadup,the Gen 2 is different and uses a stepper motor as a 'choke'.
    Last edited by Keith B; November 14th, 2011 at 08:01 AM.

  6. #6
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161
    that's the one - stepper motor, which was cleaned and checked. I found the article with the similar symptoms and it was faulty stepper motor. I think i will have to order a new one to try and swap.

  7. #7
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161
    had a look at stepper motor today and checked the phase resistance between terminals A-D which is 48ohm instead manuals 50ohm. Do you think it can be the sign of faulty motor?

  8. #8
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161
    I will answer my own question: resistance 50ohm +/- 10%

  9. #9
    AMA Pit Boss Keith B's Avatar
    Join Date
    Oct 2010
    Location
    The Fens.
    Posts
    2,230
    Sounds like the stepper could be ok,......maybe its one of the sensors?
    Could'nt help but notice you seemed to be twisting the throttle as the bike was trying to start,.....you should'nt need to do that.You could be flooding the bike.

  10. #10
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161
    This is the only way you could star it and I'm using the throttle only when it's fail to start normally. I found couple articles about the stepper and will try to clean it properly.
    http://www.apriliaforum.com/forums/s...d.php?t=160888

  11. #11
    Evil Twin charley tuono's Avatar
    Join Date
    Oct 2010
    Location
    north manchester
    Posts
    254
    what make battery is fited and how old is it ?

  12. #12
    AMA Pit Boss Keith B's Avatar
    Join Date
    Oct 2010
    Location
    The Fens.
    Posts
    2,230
    Quote Originally Posted by charley tuono View Post
    what make battery is fited and how old is it ?
    Yer know,...reading through this again made me wonder what state the battery was in.

  13. #13
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161
    Less than a year old but I can rule that out as it starts fine when the bike is warm. Also had a look at the stepper today morning and works as it should.

  14. #14
    Evil Twin charley tuono's Avatar
    Join Date
    Oct 2010
    Location
    north manchester
    Posts
    254
    low temperature = low battery voltage (or ampage)
    low battery voltage = even lower cranking voltage
    low cranking voltage = wrong sensor readings (if you dont put the right voltage in a sensor your never gonna get the right voltage out)
    wrong sensor readings = bad starting
    i notice on the video your cloccs were flashing on and off (low voltage)
    people often overlook the obvious and assume its something serious
    we will only fit yuasa batterys where we work as the others are too much hastle
    i work on these every day by the way
    as your last comment said (its ok when the weather is warm) thats classic sign of a weak battery

  15. #15
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161
    to rule that out we used jump starter and I also used YTX14-BS (westco) which has higher ampage - result the same. Even after the bike has started couple of minutes after if you blip the throttle and close it the bike can die.

  16. #16
    Ash
    Ash is offline
    GP Champ
    Join Date
    Jan 2011
    Location
    NW Leicestershire
    Posts
    1,329
    Quote Originally Posted by Judge View Post
    Isn't it an ignition advance like on the tuoldo on the left handlebar?


    The lever on the Tuoldo's left handlebar, is only to put it on fast idle it doesn't do anything else.

  17. #17
    Evil Twin charley tuono's Avatar
    Join Date
    Oct 2010
    Location
    north manchester
    Posts
    254
    might sound daft but they dont like jumper packs or starter packs even connected to the existing battery
    belive me and i know it dont make sence
    first stop is a new yuasa battery that has been conditioned properly

  18. #18
    Superbike Twin Dimania's Avatar
    Join Date
    Dec 2010
    Location
    London West
    Posts
    161
    they also don't like new Westco YTX14-BS straight from optimiser? Reading through the forum posts its more likely fueling or electric issue (wiring, sensors etc.)

  19. #19
    Baby Twin
    Join Date
    Sep 2011
    Location
    Cornwall
    Posts
    21
    Anybody tried 'Wynns Dry Fuel'?
    Suppose to take moisture out the fuel and ease starting, used it a bit on the Bandit through the winter.

  20. #20
    Evil Twin charley tuono's Avatar
    Join Date
    Oct 2010
    Location
    north manchester
    Posts
    254
    yuasa has bigger balls !
    the only thing we will fit !
    just sayin

Page 1 of 3 123 LastLast

Similar Discussions

  1. Starting a Gen 2 T from cold
    By mpgscott in forum Aprilia RSV Tuono
    Replies: 11
    Last Post: January 2nd, 2013, 08:24 AM
  2. baby its cold outside...
    By fighterDaz in forum Aprilia RSV Tuono
    Replies: 10
    Last Post: January 5th, 2012, 12:07 PM
  3. The perils of cold tyres !!!!!
    By shotgun in forum Aprilia RSV Tuono
    Replies: 25
    Last Post: May 20th, 2011, 12:49 AM
  4. Cold start probs
    By davyramone in forum Aprilia RSV Tuono
    Replies: 14
    Last Post: April 9th, 2011, 12:22 PM
  5. Anyone out there braving the cold?
    By Duckfoot in forum Aprilia RSV Tuono
    Replies: 20
    Last Post: January 4th, 2010, 08:04 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


SEO by vBSEO 3.6.1