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Linkin's 1999 Yamaha YZF-R6

Discussion in 'Other Projects - Other Bikes (non 250's)' started by Linkin, Jan 6, 2016.

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  1. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Forgot to mention that the ports had fuel in them when I took the carbs off. #4 was really bad, #3 had intake valves open so couldn't see. 1 and 2 had a bit of fuel.
     
    Linkin, Jan 10, 2016
    #41
  2. mishdog20

    mishdog20 Active Member

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    Whats the voltage at the battery when running Linkin? When the Stator and Rec-reg was shagged the battery wasnt charging at all. My guess personally is it isnt electrical, if it was coils then the damn thing should still fire straight up, and then break down when hot. Could there be a fuel delivery problem? Intermittent fault with the electric fuel pump??? Fuel delivery??
     
    mishdog20, Jan 10, 2016
    #42
  3. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    It's getting too much fuel at and below 4,000 RPM when hot. If you can keep the revs above 4,000 it runs fine

    Really don't think it's electrical... I just flattened the battery by trying to start it while flooded/plugs were wet.
     
    Linkin, Jan 11, 2016
    #43
  4. Murdo

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

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    Those needles should work ok, just reset float levels to compensate for any difference in length. How are the O rings around the seats?
     
    Murdo, Jan 11, 2016
    #44
  5. Phil

    Phil Senior Member Contributing Member

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    I had exactly the same issue with the zzr600 when I first got it.
    2 ports were full of fuel....ordered new needles anticipating that this would remedy my problem...didn't!!
    Had checked the seats prior.....should have put my glasses on....looked ok but on closer inspection found cracks in all of the O-rings.
    I could have purchased a complete kit from Wemoto with the lot for half the price???
    Once O-rings on the seats were replaced......problem solved.
    Good luck with it mate
     
    Phil, Jan 11, 2016
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  6. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Good to know, Phil.

    I attempted to get one of the seats out but it wouldn't budge. Wasn't game to yank it out in case of damage. Might need the heat gun or leave them out in the sun for a bit.
     
    Linkin, Jan 11, 2016
    #46
  7. MashtX

    MashtX Well-Known Member

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    Heya Linkin!
    That's a serious bit of kit there man!

    My FZR 400 had the "Flooded Ports" issue once, for me it was the float heights were incorrectly set - this meant that while just sitting around it was letting fuel slowly leak through and over time filled the ports up...

    Hopefully you can get it sorted ASAP though :D I want to hear this thing going properly haha
     
    • Like Like x 1
    MashtX, Jan 11, 2016
    #47
  8. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Good to know. I really only want to have the carbs off this once, it's a real bastard to get them back on... so I will do the needles and seats.
     
    Linkin, Jan 11, 2016
    #48
  9. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    So apparently 5EB-14107-00-00 is just the float needle, and 5BE-14107-00-00 being the needle and seat. Have sent off some enquiries...
     
    Linkin, Jan 11, 2016
    #49
  10. jnz92

    jnz92 Active Member Premium Member Contributing Member

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    Often abrasive crap will get stuck in the softer surface and wear the harder one. If it's only minor you could try lapping the seats in with toothpaste on the tip of the needle.
     
    jnz92, Jan 11, 2016
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  11. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Well the bike shop wanted $360 AUD for 4 sets of needles and seats... I'm not that rich. $200 AUD from the USA is what I went with. Plus $50 for a heatgun from Bunnings.

    So that's where all my money has gone this week, so I will be surviving off Mi Goreng noodles and tap water. No wonder I'm so skinny.
     
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    Linkin, Jan 11, 2016
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  12. risky

    risky risky

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    happy to pay for the tap water.lol.noodles might be expensive but when i come up wil bring you some.
     
    risky, Jan 11, 2016
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  13. Joker

    Joker See "about me" for contact details. Contributing Member

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    Mi Goreng aint so bad, bit of apple, couple of eggs...

    11190017.JPG

    That is real and what a housemate served to me once. I think I skipped dinner that night. (/off topic)
     
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    Joker, Jan 11, 2016
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  14. cantafforda600

    cantafforda600 can actually afford a 600 Premium Member

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    skinny = weight reduction
     
    cantafforda600, Jan 11, 2016
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  15. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Carbs back on and test ride round the block. Still no good, worse even. Think I got some of the hoses wrong. Oil turned to milkshake. Think I routed a water hose into crankcase breather by accident.

    Rip it all off tomorrow and try again.
     
    Linkin, Jan 11, 2016
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  16. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    I did check the oil dipstick when buying the bike, when I got home, and after the ride on Sunday... all fine then. It's one of these hoses I got wrong.
     
    Linkin, Jan 11, 2016
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  17. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    A lot more crap running around compared to a fizzer

    [​IMG]
     
    Linkin, Jan 11, 2016
    #57
  18. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Well I've flushed the oil 3 times and it's coming up fine. I must have put a carby coolant line somewhere it wasn't supposed to go and it got into the crankcase.

    It is still stalling out and bogging when hot though. But at least there is no fuel accumulating in the ports, and no milkshake.

    Thinking the problem might be with the throttle position sensor.
     
    Linkin, Jan 14, 2016
    #58
  19. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Referring to your diagram, it runs a ram-air system so everything must vent to the airbox.
     
    maelstrom, Jan 14, 2016
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  20. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    The bike started fine again today and stays fine when cold.

    I discovered excessive crankcase pressure, by taking off the oil filler cap when the bike was hot, and white misty vapour came out. I then attempted to start the bike and what do you know, it starts and idles!

    There seems to be too much pressure and a bit of white smoke/vapour escaping from the oil filler cap in the video.



    So... there are a few things that can cause this. One being blowby from worn rings. The breather could be clogged from the milkshake that the engine made due to my stuff up. Anything else?

    There is a modification that supposedly helps with this on R6's, unplug the breather from the airbox, plug the connection on the airbox, and but a filter or catch can on the end of the breather tube. I may do this until I can figure out what the cause of the problem is.
     
    Linkin, Jan 16, 2016
    #60
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