4th gen can't start please help

Discussion in 'Mechanics Garage' started by Holger, Jan 13, 2011.

  1. Holger

    Holger New Member

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    When I ride my bike every day it's starting fine but when I put in the garage for 2 weeks it's damn hart to start. When I crank it, it pops from a singel cylinder and nothing ellse happens.
    New plugs, new battery and cleaning carbs dosn't help at all.

    Please help
     
    Holger, Jan 13, 2011
    #1
  2. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    How do you finally get it to go? runs weak on a cylinder or two for a minute or two before starting to run normally on its own?
     
    tinkerinWstuff, Jan 13, 2011
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  3. Holger

    Holger New Member

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    You are absolutely right, runs weak on a cylinder or two for a minute or two before starting to run normally on its own?
     
    Holger, Jan 13, 2011
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  4. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    sounds like the carbs are not as clean as you think. The choke pickup tube in these carbs is prone to clogging and very difficult to get clean. If you have the time to wait it out, members here have let seafoam sit in the carbs for two weeks or more to clean it out. Otherwise, you are looking for the tube that is pointed to in red below. This is the VF500 carb which is similar.

    [​IMG]
     
    tinkerinWstuff, Jan 13, 2011
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  5. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    tinkerinWstuff, Jan 13, 2011
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  6. TOE CUTTER

    TOE CUTTER Mullet Man

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    I agree with Tink in the carbs not being as clean as you think, it would be the first thing I went at. I am not such a fan of Seafoam for this though. It has its time and place but if you want it to run correctly and know for sure it will you must clean them and visually inspect.
     
    Last edited: Jan 13, 2011
    TOE CUTTER, Jan 13, 2011
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  7. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

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    I haven't had the luck with Seafoam either. Just throwing it out as an option. I can't wait weeks for mechanic-in-a-can to get the job done.
     
    tinkerinWstuff, Jan 13, 2011
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  8. MarkBartels

    MarkBartels New Member

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    There is a product called Carbon Free that works wonders on cleaning carbs. It is available online or you may be able to find it at a marine dealer.

    Sierra Carbon Free
     
    MarkBartels, Jan 13, 2011
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  9. squirrelman

    squirrelman Member

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    Best way to clean the choke circuit pickup tubes is with a stiff steel wire .010"-.012" diameter.

    You need to first poke through a slight blockage at about 30mm depth (level that fuel sits in carb) then all the way to the end at 55-60mm. Chemicals can't do this.

    IMG_1265.jpg

    Carb spray and compressed air to finish up.
     
    squirrelman, Jan 13, 2011
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  10. TOE CUTTER

    TOE CUTTER Mullet Man

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    +1 With Squirrel, no substitute for it. Gas residue is a stubborn material.
     
    TOE CUTTER, Jan 13, 2011
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  11. Holger

    Holger New Member

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    Thank you for your answers. I'll pull the carbs for extra cleaning in the weekend.
    I'm so lucky that I have access to a ultrasound cleaner so I hope that can do the job
    [​IMG]
     
    Last edited: Jan 13, 2011
    Holger, Jan 13, 2011
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  12. crustyrider

    crustyrider New Member

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    that should help but your gonna have to really get into the jet like everybody is saying thin wire carb cleaner and compressed air.
     
    crustyrider, Jan 13, 2011
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  13. Holger

    Holger New Member

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    Okay I'll try it this way: Ultrasound - wire cleaning - ultrasound

    [​IMG]
     
    Holger, Jan 13, 2011
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  14. MarkBartels

    MarkBartels New Member

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    Sierra Carbon Free WILL melt any varnish and gum from the carbs and make it much easier to clean. I used it on a Seca II that I rescued from my brother in-law. The bike sat for 6 years and the carbs were unbelievably varnished. In short the product works very well...

    You will have to use the wire to make sure the pickup tube is completely clear and use some compressed air to blow everything out as mentioned before...
     
    MarkBartels, Jan 14, 2011
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  15. Holger

    Holger New Member

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    Wauuw carbs wire cleaned, ultrasound cleaned. The choke tubes was clogged and now it's starting like a charm.
    Thank you for all your answers.
     
    Holger, Jan 14, 2011
    #15
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