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Project My Fizzer

Discussion in 'Your 250cc Projects' started by GreyImport, Sep 24, 2012.

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  1. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Cable is ok and brand new .... it has full travel .... I just wasnt rolling it full on in that vid ... believe me Ive done everything I could think of when the problem arises

    Just swapped out the fuel pump and about to go out riding,

    If I dont post in 3 days send out the search party.
     
    GreyImport, Dec 3, 2013
    #321
  2. Phil

    Phil Senior Member Contributing Member

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    Message to Murdo. stand by for rescue mission, Mr Grey is at it again.:lolsign:
     
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    Phil, Dec 3, 2013
    #322
  3. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Im back!

    Didnt even make it out the driveway ...... dont worry bout a search party ..... send the scrap metal dealer.
     
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    GreyImport, Dec 3, 2013
    #323
  4. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    I will go for Occam's Razor, my weapon of choice.
    1/ You had a bike that would go 15 minutes before conking out.
    2/ You swapped in a second hand fuel pump.
    3/ You did not make it out of the driveway.

    Based on this excellent logic "She's a witch burn her"

    Therefore the second hand fuel pump is not as good as the original one, so you must burn it. :D
     
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    Last edited: Dec 3, 2013
    maelstrom, Dec 3, 2013
    #324
  5. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Thankyou for your thoughtful insight Mr Green :minigun:

    opposite can be said for my 2 wives .... second one is better than the original but they are both fukin useless in the end.
     
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    GreyImport, Dec 3, 2013
    #325
  6. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    so I changed the pump again .... no revs
    changed the black box again ..... no revs

    So now I cant even get out of the backyard

    Plugged in the spare pump to make sure power was getting there ..... no problem

    plugged in the pump in the bike ...... full revs again :headbang:

    Rode up the road and back , accelerated like stink again

    Got to the driveway , stalled and on restart ...... NO revs again

    So back to square one again and I have NO FUCKIN IDEA what it is!
     
    GreyImport, Dec 3, 2013
    #326
  7. Revolver

    Revolver Big Member Premium Member

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    Wasn't there something you couldn't fix with the carbs? That had to go back in? Could this be it?
     
    Revolver, Dec 3, 2013
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  8. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Just a couple of the needle jets were a little worn and I couldnt get hold of a new set ...... that should only affect midrange power ..... its accelerating fine when the gremlin is sleeping.
     
    GreyImport, Dec 3, 2013
    #328
  9. risky

    risky risky

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    grey, i will be generous and offer you 75 bucks for that heap of crap so you will stop worrying. sound fair to you????
     
    risky, Dec 3, 2013
    #329
  10. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    You better hurry ....


    free bike.jpg
     
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    GreyImport, Dec 3, 2013
    #330
  11. Phil

    Phil Senior Member Contributing Member

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    My 2 bits worth
    I have perused all of your recent posting on this issue, think your carbs are fine, kinda get the feeling that it is an electrical problem. You plugged the fuel pump and bingo, full rev range. Up the road and back and suddenly power is lost again. Sounds like a connector is loose or something is shorting when bike is ridden.
    That's what I would be looking at, even if a connector looks ok, check them all.
     
    Phil, Dec 3, 2013
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  12. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Ideas!!!
    Ok process of elimination.
    Lets stay with fuel supply as the issue.
    We have to assume then that the fuel is running out and there is only enough to idle and nothing more. If there was any more then there would be an immediate response when you pull the choke, yes?

    Now what are the possibilities?
    1/ The floats are getting stuck closed. (difficult to imagine that all of them would get stuck at the same time)
    2/ Fuel hose/filter is being obstructed.
    3/ Fuel tap is being obstructed
    4/ Vacuum line to fuel tap is being obstructed
    5/ Tank vent is being obstructed
    6/ fuel pump is not pumping

    The easiest way to bypass everything is to remove the tank and zip tie some small fuel tank to the bike, connect another hose directly to the carbs and ride up the road again. That should eliminate everything except (1).
    Is this possible Mr Grey?
     
    maelstrom, Dec 3, 2013
    #332
  13. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Phil,
    If it was electrical then surely it should just conk out and that would be it, but Mr Grey can start up and idle only, as I understand it. What do you think? I thought it was both, that being the fuel pump which is electrical and supplies the fuel. But now it would have to be either both pumps have the same problem, or as you suggested as the fault being electrical, maybe the pump is losing electrical power after some time and that loss of power is external to the pump.
    Thoughts?
     
    maelstrom, Dec 3, 2013
    #333
  14. Murdo

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

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    My thoughts are that by this time it would be driving me batty. Could be time for Grey to take it to Gaskin for some professional help.
     
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    Murdo, Dec 3, 2013
    #334
  15. Phil

    Phil Senior Member Contributing Member

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    Hey Blair
    This bike of GI's has got me stumped, after all the work and set on the carbs, seemed to have that side of it covered.
    Why I thought electrical was simple, he plugged the fuel pump in and got revs straight away, pump was working.
    Quick fang up the road and back, suddenly back to idle only, no revs got me thinking fuel pump=electrical issue.
    I certainly don't profess any serious mechanical back ground, simple minded deduction on my behalf. Wondering if the pump or should I say pumps are faulty??? one I can buy, 2 sounds a little out there.
    To be honest Blair, I've rarely seen a bike give this much heart ache, got me stumped.
     
    Phil, Dec 3, 2013
    #335
  16. Phil

    Phil Senior Member Contributing Member

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    Phil, Dec 3, 2013
    #336
  17. Murdo

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

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    I have another electric pump I can lend you to try Grey.
     
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    Murdo, Dec 3, 2013
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  18. Phil

    Phil Senior Member Contributing Member

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    That makes good sense, he has tried his best but something doesn't gel. A mechanic will probably pinpoint the problem rapidly.
     
    Phil, Dec 3, 2013
    #338
  19. kiffsta

    kiffsta Senior Member

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    Are you sure this thing isn't a Harley ?


    Get the multimeter , check the stator is making current under load , check the voltage reg is holding up under load


    Sent from my iPhone using Tapatalk
     
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    kiffsta, Dec 3, 2013
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  20. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    Well I cleaned my fuel tap/petcock yesterday, very easy to do, two screws to remove it from the frame, two more to open the unit - in the ultrasonic for 20 minutes came out clean

    I did have rust residue build up in mine, which for a bike that's been sitting could constrict fuel flow if there's sufficient gunk accumulated

    peace out
     
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    ruckusman, Dec 3, 2013
    #340
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