Help with carb problem....stuck float......next move?

Discussion in '3rd & 4th Generation 1990-1997' started by 91rc, Feb 14, 2011.

  1. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    TOE CUTTER has a good thread on carb cleaning with pictures. You might send him a PM and request the link to it.

    you can set the carb assembly in the V of the engine so they set at the same angle as they would when fully installed. Hook the fuel line on and jump the fuel pump. You want to make sure no fuel leaks. If the floats are seating and the fuel tube o-rings are sealing, then no fuel should exit the carbs during the test. You could also do it on a bench and gravity feed from a fuel can.
     


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  2. anarchy13

    anarchy13 New Member

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    How do i find this TOE CUTTER guy? im kinda new to forums but FEELS GREAT To Be Surrounded By Like Minds :drinkers:
     


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  3. anarchy13

    anarchy13 New Member

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    I found and wrote TOE CUTTER maybe ill get that carb cleaning link soon :)
     


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  4. slowbird

    slowbird Member

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    Thanks Tinker
     


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  5. toblave

    toblave New Member

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    Highly agree about the testing the carbs before installing them. I just had the fun this afternoon of a leaking float needle that filled two of my cylinders and carb throats on my VF500.

    If I can't fix the corroded seat, I'll have to source one, which really sucks since the Front Range weather is supposed to be decent next week, but since most shops don't care to be open on Mondays, let alone Sundays...
     


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  6. anarchy13

    anarchy13 New Member

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    Can someone tell me how to test the carbs before reinstalling, i musta missed the how to do part :) ?????
     


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  7. crustyrider

    crustyrider New Member

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    to bench test your carbs you set them on the bench grab a beer, open the beer, take a pull on the beer, big sigh, drink more beer. then, hook up an "IV" bottle to your fuel inlet on the carbs, it won't give you the 2/3 PSI that the fuel pump does put it will tell you if you float is set correctly as far as leaking gas, as well as your rings on the bowls..pretty simple to do AND it is wise to do so you don't instal the carbs find out they leak and have to take them off again...
     


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  8. crustyrider

    crustyrider New Member

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    http://vfrworld.com/forums/mechanics-garage/22449-cleaning-carbs.html here is the link for TOECUTTERs thread.

    BTW your cleaning your carbs..........not rebuilding them.... (my high school shop teacher would hammer folks when they said that they rebuilt their carbs....and he asked what they did and it turned out it was just a cleaning.....he would cuss something fierce and tell us that we weren't smart enough to rebuild a carb...)
     


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  9. anarchy13

    anarchy13 New Member

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    I like the sucking down the beer part or i wouldnt be in germany ;) only 1 problem my carb is gravity fed no fuel pump on the sabre 750 here in Europe so how do i test it now?
     


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  10. crustyrider

    crustyrider New Member

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    you don't need the fuel pump... get a 2 liter bottle and a stopper(cork) make a hole in it so a fuel line tube will fit , duct tape a wire around it so it has a handle ...here is a picture to illustrate it better [​IMG]

    something like this will work.. just remember to poke a hole in the bottom and plug it so you can remove it to allow for pressurization
     


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  11. anarchy13

    anarchy13 New Member

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    THATS AWESOME MAN!!!!! :) i dont think i need to simulate a vacuum just let it free flow till i think its full huh? and hows CALI this time of year man im outside workin on my bike in the snow right now atleast i got German Beer i consider that Anti-Freeze :D :crazy:
     


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  12. anarchy13

    anarchy13 New Member

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    sorry didnt see your request till now im pretty new at using a forum :D ill try to get some pics some day i just usually dont have a camera around and im working outside and its been -13 degrees outside and today i worked in the snow :crazy: my neigbors probly think im crazy but screw em they dont ride so they dont know why i go through this hell holding cold metal tools in my hand to get my steel horse running :D they just give me evil stares and complain all the time about the noise and all the things i got going on in the parking lot :chaingun: as of right now carbs r done being serviced and ready to rock i just gotta get it back in which didnt happen today i couldnt get it lined up right grrr!!! tight under the frame!!! its a pain!!! thanks for all the advice thus far :cool:
     


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  13. anarchy13

    anarchy13 New Member

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    HERES A PIC OF MY BADBOY!!!!!! 84VF750S International Model
    [​IMG]
     

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  14. jonn

    jonn New Member

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    first let say I haven't had my VFR long enough to have had to do any work to it exept to replace the chain and tires, but I have had alot of old metrics. Whenever I have a carb problem but the bike starts, I drain the carbs and put in a heavy dose of sea foam and let it sit for a few days and then drain them, add fresh gas and see what happens. Many times thats all they need. If you need to break them down you can go to Bikebandit.com and they will have a complete diagram of the carbs and also list most if not all of the factory jet sizes. The diagram can also tell you where all those extra parts you have left from your kit go. And on most older metrics you have to have the airbox, pods, ect. hooked up before you test out how the carbs are. To much air they won't run right and you will think you messed up the rebuild or cleaning and start all over again. The air has to be restricted.
     


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  15. anarchy13

    anarchy13 New Member

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    Your exactly right i did my cleaning the carb 3 times already and still dont run right so im trying to go back to the original airbox and settings and see if that helps. Will let ya know!!! P.s. We aint got no sea foam here in Germany but i heard its good stuff ;)
     


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    #35
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