/ Register

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

FZR250 - noise in gear

Discussion in 'Yamaha 250cc In-Line 4's' started by soames, Nov 29, 2014.

  1. soames

    soames Well-Known Member

    Messages:
    60
    Likes Received:
    33
    Trophy Points:
    213
    Joined:
    Nov 23, 2014
    Gender:
    Male
    Occupation:
    problem finder
    Location:
    milton keynes uk
    My Bike:
    fzr250 3ln1
    OK so 1st problem found bike 3ln-1 250r finally got to start (carbs checked fresh fuel sparkplugs changed new battery ) runs OK in neutral so warmed it up checked for leaks flushed oil out water changed now put it up on paddock stands and selected gear difficult to get in then as I release the clutch loud banging from the engine anybody come across this before I think it might be the gearbox but cud it be something I'm missing
     
    soames, Nov 29, 2014
    #1
  2. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,737
    Likes Received:
    2,883
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    Take a video and post it up so we can get a better indication of what it might be
     
    • Like Like x 1
    Linkin, Nov 29, 2014
    #2
  3. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

    Messages:
    3,251
    Likes Received:
    1,427
    Trophy Points:
    918
    Joined:
    Oct 1, 2013
    Gender:
    Male
    Location:
    Narrabeen, NSW Australia
    My Bike:
    Yamaha FZR250 3LN1
    the transmissions are noisy on the fizzer - described to me as the rattling of a bag of spanners, which was accurate, that isn't however banging - what you describe doesn't sound healthy, only a video of the noise will let us know for sure

    peace out
     
    ruckusman, Nov 29, 2014
    #3
  4. soames

    soames Well-Known Member

    Messages:
    60
    Likes Received:
    33
    Trophy Points:
    213
    Joined:
    Nov 23, 2014
    Gender:
    Male
    Occupation:
    problem finder
    Location:
    milton keynes uk
    My Bike:
    fzr250 3ln1
    soames, Nov 29, 2014
    #4
  5. soames

    soames Well-Known Member

    Messages:
    60
    Likes Received:
    33
    Trophy Points:
    213
    Joined:
    Nov 23, 2014
    Gender:
    Male
    Occupation:
    problem finder
    Location:
    milton keynes uk
    My Bike:
    fzr250 3ln1
    ok that did upload the clunking putting in gear i remember not sure you can hear the banging it is in the last 3rd of the video
     
    soames, Nov 29, 2014
    #5
  6. Murdo

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

    Messages:
    6,402
    Likes Received:
    4,789
    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.
    Could be a gearbox bearing. Try listening with a 'mechanics stethoscope' (a large screwdriver touched on the cases and held against your ear) to see which area the noise is coming from.
     
    • Like Like x 1
    Murdo, Nov 30, 2014
    #6
  7. Abel

    Abel Abel

    Messages:
    36
    Likes Received:
    36
    Trophy Points:
    188
    Joined:
    Sep 2, 2013
    Location:
    Sunny England
    My Bike:
    fzr 250
    I can't really make out what is gong on through your little mic, but have the following. comment:

    I've found pretty much anything running in gear on a paddock stand makes a noise that you don't hear on the road. Particularly bad was a shaft drive BMW R1100 that I was the custodian of for a short while. On the center stand in gear at idle sounded like a diesel cement mixer with a few bricks in it. The lower the gear the greater the effect, you get all sorts of weird harmonics and clattering because there is no load. If you look while this is happening you'll probably see the chain flapping up and down and the rear wheel jerking round. A much higher gear reduces the effect. I'd suggest running it around on the road or dragging some back brake whilst on the stand to see if the noise goes away / changes before you look too much further.
     
    • Like Like x 5
    Abel, Dec 5, 2014
    #7
  8. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

    Messages:
    3,251
    Likes Received:
    1,427
    Trophy Points:
    918
    Joined:
    Oct 1, 2013
    Gender:
    Male
    Location:
    Narrabeen, NSW Australia
    My Bike:
    Yamaha FZR250 3LN1
    great post!!
     
    • Like Like x 1
    ruckusman, Dec 7, 2014
    #8
  9. soames

    soames Well-Known Member

    Messages:
    60
    Likes Received:
    33
    Trophy Points:
    213
    Joined:
    Nov 23, 2014
    Gender:
    Male
    Occupation:
    problem finder
    Location:
    milton keynes uk
    My Bike:
    fzr250 3ln1
    thanks for your imput guys i pulled the clutch cover off and re adjusted the centre rod and the noise seems to have gone for now but like all things gear selection is now playing up so its back to head scratching while i wait for me carb jets to arrive
     
    soames, Dec 7, 2014
    #9
  10. Revolver

    Revolver Big Member Premium Member

    Messages:
    560
    Likes Received:
    359
    Trophy Points:
    373
    Joined:
    Aug 30, 2013
    Gender:
    Male
    Location:
    Dipswich, QLD
    My Bike:
    "Cherry" the 3ln3 FZR250
    Where did you get your jets from?
     
    Revolver, Dec 17, 2014
    #10
  11. soames

    soames Well-Known Member

    Messages:
    60
    Likes Received:
    33
    Trophy Points:
    213
    Joined:
    Nov 23, 2014
    Gender:
    Male
    Occupation:
    problem finder
    Location:
    milton keynes uk
    My Bike:
    fzr250 3ln1
    got them off fleabay for the main jets but there 8mm slot head not the 6mm ones and A-BAX PRECISION ENGINEERING for the pilots
     
    soames, Dec 17, 2014
    #11

Share This Page