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Thread: Idling @ 8000 rpm

  1. #136
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    Quote Originally Posted by Gibbo89 View Post
    What was you previous experience with small engines?
    Had a few bikes over in the UK but this was the biggest job I'd done on one. Had rebuilt a GS550 with a friend but we didn't touch the engine much as it was running OK. So a bit of experience and OK with maintenance etc but just find troubleshooting a bit tricky.

    Quote Originally Posted by ducatilover View Post
    Get into it man! Take it up the road anyway.
    A compression check may be in order if there's still a gay idle, but, setting the floats could have something to do with it too.
    Easy for you to say you know what you're doing

    But yeah will run it up and take it up the road. Just really running out of time at the moment and want it done so might have to spend a few $$$s at Simon's...

    Yeah the compression check is a bastard on these things, need a special adapter that I don't have to get down into the plug holes, otherwise with my socket-on-a-hose style guage its impossible to get a good seal.

  2. #137
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    17th July 2005 - 22:28
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    I've forgotten, did you set all the pilot screw to fact. specs?
    Quote Originally Posted by Paul in NZ View Post
    Ha...Thats true but life is full horrible choices sometimes Merv. Then sometimes just plain stuff happens... and then some more stuff happens.....




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  3. #138
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    Quote Originally Posted by ducatilover View Post
    I've forgotten, did you set all the pilot screw to fact. specs?
    Nope haven't done that, you reckon it's worth a go?

    Not sure what I'm doing mind you, the carbs in the GSX manual are totally different. Do have what is apparently the factory specs for these BDST30s tho, what do you reckon I go off?

    Click image for larger version. 

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  4. #139
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    Quote Originally Posted by cbfb View Post
    Nope haven't done that, you reckon it's worth a go?

    Not sure what I'm doing mind you, the carbs in the GSX manual are totally different. Do have what is apparently the factory specs for these BDST30s tho, what do you reckon I go off?

    Click image for larger version. 

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    Give one full turn a go, have you got a vacuum gauge?
    Wind the screws in 'till they stop (gently) then back 'em off a whole turn. Will be interesting to see where they are currently set.
    Quote Originally Posted by Paul in NZ View Post
    Ha...Thats true but life is full horrible choices sometimes Merv. Then sometimes just plain stuff happens... and then some more stuff happens.....




    Alloy, stainless and Ti polishing.
    Bling your bike out!
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  5. #140
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    Might be wrong for your bike, but rule of thumb was always 1 and a half turns
    Do you realise how many holes there could be if people would just take the time to take the dirt out of them?

  6. #141
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    Quote Originally Posted by ducatilover View Post
    Give one full turn a go, have you got a vacuum gauge?
    Wind the screws in 'till they stop (gently) then back 'em off a whole turn. Will be interesting to see where they are currently set.
    OK all good will have a crack at that.

    Not got a vacuum gauge no, our vacuum was brand new at Xmas so it should be fine

    Quote Originally Posted by MSTRS View Post
    Might be wrong for your bike, but rule of thumb was always 1 and a half turns
    OK will give it a try at 1 then wind it out a bit more. Found a handy site about it earlier (and now lost it again will check later when not bogged down @ work).

  7. #142
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    Quote Originally Posted by MSTRS View Post
    Might be wrong for your bike, but rule of thumb was always 1 and a half turns
    That seems to be true, but, my (crap) eyes see 1 turn on the sheet below that cbfb posted up.
    That reminds me, I better do mine whilst the carbs are off (I think I already have, but, it can't hurt)
    Quote Originally Posted by Paul in NZ View Post
    Ha...Thats true but life is full horrible choices sometimes Merv. Then sometimes just plain stuff happens... and then some more stuff happens.....




    Alloy, stainless and Ti polishing.
    Bling your bike out!
    PM me

  8. #143
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    Quote Originally Posted by ducatilover View Post
    That seems to be true, but, my (crap) eyes see 1 turn on the sheet below that cbfb posted up.
    That reminds me, I better do mine whilst the carbs are off (I think I already have, but, it can't hurt)
    Ah that's what it means! got you now. Get a bit lost without the manual.

  9. #144
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    Have the carbs been balanced?

  10. #145
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    Quote Originally Posted by Katman View Post
    Have the carbs been balanced?
    Nah not yet, didn't think there was much point while we're dicking around changing things and pulling bits apart. Was going to be a winter project.

    You reckon that could be contributing?

  11. #146
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    Quote Originally Posted by cbfb View Post
    Nah not yet, didn't think there was much point while we're dicking around changing things and pulling bits apart. Was going to be a winter project.

    You reckon that could be contributing?
    Balancing the carbs needs to be the last step in the 'tune-up' process. Valve clearances need to be right first but I'm assuming that you set them in the process of refitting the head.

    Yes, unbalanced carbs will most certainly contribute to an uneven idle.

  12. #147
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    Quote Originally Posted by Katman View Post
    Balancing the carbs needs to be the last step in the 'tune-up' process. Valve clearances need to be right first but I'm assuming that you set them in the process of refitting the head.

    Yes, unbalanced carbs will most certainly contribute to an uneven idle.
    Aye valve clearances are spot on. Will get these other things ticked off first before doing the balancing like you say. Cheers.

  13. #148
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    Quote Originally Posted by cbfb View Post
    Aye valve clearances are spot on. Will get these other things ticked off first before doing the balancing like you say. Cheers.
    Um turned out valve clearances were NOT spot on, apparently I'd set them too loose. However in the end I took it down to a mechanics and got that and the carbs sorted properly, runs like a beauty now.

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