/ Register

  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Across, 15-20% power loss.

Discussion in 'Suzuki 250cc In-line 4's' started by sarahb, Jan 8, 2016.

Page 2 of 3
  1. kiffsta

    kiffsta Senior Member

    Messages:
    9,066
    Likes Received:
    6,872
    Trophy Points:
    1,168
    Joined:
    Aug 7, 2010
    Gender:
    Male
    Location:
    Brisbane
    Does the knock happen when you are rising and at a stand still ?
     
    • Like Like x 1
    kiffsta, Jan 16, 2016
    #21
  2. Willrcr15

    Willrcr15 Well-Known Member

    Messages:
    549
    Likes Received:
    399
    Trophy Points:
    373
    Joined:
    Nov 11, 2013
    Gender:
    Male
    Location:
    Newcastle
    My Bike:
    FZR250 3LN 89
    [​IMG]
     
    • Like Like x 1
    Willrcr15, Jan 16, 2016
    #22
  3. sarahb

    sarahb Well-Known Member

    Messages:
    169
    Likes Received:
    125
    Trophy Points:
    248
    Joined:
    May 9, 2015
    Location:
    Canberra
    My Bike:
    2008 Triumph Daytona 675
    It's perhaps a little inconsistent. I noticed it turning left. In low gears. Slow. Hard to hear with engine noise and helmet and wind sometimes. Going for test ride tmrw morning to concentrate on it and take note.


    Sent from my iPhone using Tapatalk
     
    sarahb, Jan 16, 2016
    #23
  4. sarahb

    sarahb Well-Known Member

    Messages:
    169
    Likes Received:
    125
    Trophy Points:
    248
    Joined:
    May 9, 2015
    Location:
    Canberra
    My Bike:
    2008 Triumph Daytona 675
    Definitely no knocking at stand still. Not so much inconsistent as I thought. When the bike is at an angle; round roundabouts and corners. Seems always when I've slowed down for a turn and then am accelerating out from the turn. Knock knock. Low gears. High speeds I can't detect anything. Chain is too loose. About 2 inches play. Will get some help with it tomorrow. Hopefully.


    Sent from my iPhone using Tapatalk
     
    sarahb, Jan 17, 2016
    #24
  5. Willrcr15

    Willrcr15 Well-Known Member

    Messages:
    549
    Likes Received:
    399
    Trophy Points:
    373
    Joined:
    Nov 11, 2013
    Gender:
    Male
    Location:
    Newcastle
    My Bike:
    FZR250 3LN 89
    Get it up to the right tension & do the exact same trip & see if the noise has gone.
    My guess is that the chain is stretched & has lateral slop & is running against something when in a turn.
    When you are setting the chain tension turn the wheel moving the chain along at 100mm intervals & feel it until you find the tightest part, set the tension there. You'll get an idea how worn / stretched the chain is by the difference in between the slackest & tightest parts of the chain.
    If you do replace the chain, replace the sprockets as well, worn sprockets will ruin a new chain pretty quickly.
     
    • Like Like x 1
    Willrcr15, Jan 17, 2016
    #25
  6. JiffyJoker

    JiffyJoker Well-Known Member

    Messages:
    35
    Likes Received:
    19
    Trophy Points:
    203
    Joined:
    May 25, 2014
    Gender:
    Male
    Location:
    Bowen
    My Bike:
    Suzuki GSX250F
    It's definately your chain slack. Look and feel above and beside the entry line of the chain for the front sprocket case. That is where it's knocking from

    Sent from my SM-G900I using Tapatalk
     
    • Like Like x 2
    JiffyJoker, Jan 17, 2016
    #26
  7. JiffyJoker

    JiffyJoker Well-Known Member

    Messages:
    35
    Likes Received:
    19
    Trophy Points:
    203
    Joined:
    May 25, 2014
    Gender:
    Male
    Location:
    Bowen
    My Bike:
    Suzuki GSX250F
    I'll just want to reinforce in detail that it is one inch TOTAL slack and play.. NOT a one inch droop either side of the lateral centre of play creating 2 inches total slack.

    Sent from my SM-G900I using Tapatalk
     
    JiffyJoker, Jan 17, 2016
    #27
  8. sarahb

    sarahb Well-Known Member

    Messages:
    169
    Likes Received:
    125
    Trophy Points:
    248
    Joined:
    May 9, 2015
    Location:
    Canberra
    My Bike:
    2008 Triumph Daytona 675
    Took the bike to the shop

    Well...... chain was very dry. .



    So I've learnt something today. He did tighten it and lubed it and I took it for a spin. He didn't think I'd notice a difference but I noticed a huge difference. The knocking is completely gone

    Felt so confident that I've just ridden up to Canberra with the dog. Very smooth.

    Plan is to get the front sprocket looked at.....

    And keep an eye and ear out. And spray the chain every 300-500kms


    Sent from my iPhone using Tapatalk
     
    • Like Like x 2
    sarahb, Jan 18, 2016
    #28
  9. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,929
    Likes Received:
    6,713
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    sprockets 2.png
     
    • Like Like x 1
    GreyImport, Jan 18, 2016
    #29
  10. sarahb

    sarahb Well-Known Member

    Messages:
    169
    Likes Received:
    125
    Trophy Points:
    248
    Joined:
    May 9, 2015
    Location:
    Canberra
    My Bike:
    2008 Triumph Daytona 675
    so after my chain stopped rattling i couldn't resist but take my bike instead of the car for the trip to canberra and then wollongong and then back down the coast i already had planned.

    to canberra no worries and from canberra to robertson in the southern highlands i got 210kms out of the tank before switching to reserve. couldn't believe it, not sure what made the most difference to mileage, possibly air filter made a big difference? cruising at 100kms/hour consistently up the hume..

    side note: i have now run out of petrol twice in the last couple of weeks (well had to stop and switch to reserve) as i've wanted to see how far she will go and also as the orange indicator light is working but the red indicator light has not worked since i've had the bike... anyway both times after switching i've had to push start the bike.... wondering why that is and if there's a different work around.. its been ok so far as there's beeen a hill..

    anyway after leaving wollongong and heading back down the coast i was riding up a hill (before a sharp righthand bend!) into Berry, i had heavy traffic in front of me and behind me, i changed down into third gear and suddenly saw the needle jumping around the tacho... and i know from experience that indicates a problem with the battery (but the battery is a month or two old and has never had any problems) and then the engine coughs and splutters and i'm losing power and i pull off to the side of the road and as i'm just off the road and try to straighten up the handlebars i lose control of the bike.. .well i can't move the handlebars back straight.. and i'm on gravel and i nearly drop it and its ugly. i take a breath and thank god i'm ok and the bike is ok and after a minute i try to start the bike again and its totally dead. not a sound.

    thankfully i'm travelling this leg with my boyfriend and he comes back and at first we can't work out what is preventing the handlebars from turning back straight. he has a look around and the top right fork seal securing nut has worked itself soo loose that it has come into contact with the coolant overflow and prevented the handlebars turning straight.

    i screw it back in with my fingers. again, we're on a hill and push start the bike and head into Berry to find a spanner... complete the rest of the journey with no battery issues, all be it in a torrential downpour we didn't expect.. but i've ridden the bike every day since then and there are absolutely no issues with the battery..

    so i'm wondering what could explain this.. divine intervention.. ? :confused::prankster:
     
    • Like Like x 2
    sarahb, Jan 26, 2016
    #30
  11. Phil

    Phil Senior Member Contributing Member

    Messages:
    3,613
    Likes Received:
    1,549
    Trophy Points:
    923
    Joined:
    Aug 8, 2010
    Gender:
    Male
    Occupation:
    M C E
    Location:
    Sunshine Coast Qld
    Home Page:
    My Bike:
    Suzuki GT250X7 Kawasaki ZZR600
    Divine intervention ??? could be or perhaps it simply wasn't your turn to crash !!
    Which ever way you look at it....you were very LUCKY and we are pleased about that :thumb_ups:
     
    • Like Like x 2
    Phil, Jan 26, 2016
    #31
  12. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,929
    Likes Received:
    6,713
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    For once, traffic was a blessing :bowdown: :D
     
    • Like Like x 1
    GreyImport, Jan 26, 2016
    #32
  13. Willrcr15

    Willrcr15 Well-Known Member

    Messages:
    549
    Likes Received:
    399
    Trophy Points:
    373
    Joined:
    Nov 11, 2013
    Gender:
    Male
    Location:
    Newcastle
    My Bike:
    FZR250 3LN 89
    That's experience, a valuable commodity.
    What doesn't kill you makes you stronger
     
    • Like Like x 1
    Willrcr15, Jan 26, 2016
    #33
  14. kiffsta

    kiffsta Senior Member

    Messages:
    9,066
    Likes Received:
    6,872
    Trophy Points:
    1,168
    Joined:
    Aug 7, 2010
    Gender:
    Male
    Location:
    Brisbane
    I think there is important message here that motorcycles vibrate and bolts can come undone. You should use locktite on the important parts like brake calipers, forks, rear sets etc and torque them to the correct settings.

    locktite.png



    Im glad you are okay Sarah
     
    • Like Like x 3
    Last edited: Feb 9, 2016
    kiffsta, Jan 26, 2016
    #34
  15. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

    Messages:
    6,399
    Likes Received:
    4,786
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1937 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, FT500 plus a few others.
    Good to know you are ok.
    Did the loose bolt come into contact with some wiring? Could it have caused a short?
     
    • Like Like x 1
    Murdo, Jan 26, 2016
    #35
  16. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

    Messages:
    2,428
    Likes Received:
    1,173
    Trophy Points:
    823
    Joined:
    Jul 1, 2013
    Gender:
    Male
    Occupation:
    Dispatch Manager
    Location:
    Beenleigh
    My Bike:
    NONE
    ^^^ this seems likely. As for the needing to push start when hitting reserve. How long do you crank it over? As if the carbs run out if fuel. The fuel pump will meed to prime them again.
     
    Th3_Huntsman, Jan 26, 2016
    #36
  17. sarahb

    sarahb Well-Known Member

    Messages:
    169
    Likes Received:
    125
    Trophy Points:
    248
    Joined:
    May 9, 2015
    Location:
    Canberra
    My Bike:
    2008 Triumph Daytona 675
    Ok thanks. Three/ four timeS. The fuel pump should prime? I dunno kind of felt like if I kept going I was flooding. Curious.


    Sent from my iPhone using Tapatalk
     
    sarahb, Jan 26, 2016
    #37
  18. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,929
    Likes Received:
    6,713
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    When reaching reserve level while riding it should just stutter so then when u turn the tap to res it should carry on without stopping.

    Does the Across just have a standard on ,res, off fuel tap?
     
    • Like Like x 1
    GreyImport, Jan 26, 2016
    #38
  19. sarahb

    sarahb Well-Known Member

    Messages:
    169
    Likes Received:
    125
    Trophy Points:
    248
    Joined:
    May 9, 2015
    Location:
    Canberra
    My Bike:
    2008 Triumph Daytona 675
    Oh well if there is a next time I will try switching it before stopping.

    Yes, I think it's standard ?


    Sent from my iPhone using Tapatalk
     
    sarahb, Jan 28, 2016
    #39
  20. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,929
    Likes Received:
    6,713
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    This is likely wat it looks like inside the tank ..... its wat gives u the 'reserve' part ..... it may be blocked if its not starting after the level hits the lower filter so to speak

    IMG_3327.jpg
     
    • Like Like x 1
    GreyImport, Jan 28, 2016
    #40
Page 2 of 3

Share This Page