Is my Muffler broke?

Discussion in 'Motorized Bicycle General Discussion' started by MrLarkins, Aug 26, 2008.

  1. MrLarkins

    MrLarkins HS Math Teacher

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    take a look at the inside of my muffler...it looks as if a hole has burned through the metal plate...is it broke? do i need a replacement?

    [​IMG]



    and there is a gap at the end of this one.

    [​IMG]
     
    #1 MrLarkins, Aug 26, 2008
    Last edited: Aug 26, 2008
  2. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    I would not worry.

    If it starts rattling, you may want to tack weld it.
     
  3. MrLarkins

    MrLarkins HS Math Teacher

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    well, i am having issues with my rpm/speed...and last month, the bottom of the muffler almost fell off, and I remember that my speed was hindered then too...i was wondering if this hole is causing air flow problems and thus causing rpm/speed problems...
     
  4. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    It may be causing a lean condition. What's your plug look like?
     
  5. MrLarkins

    MrLarkins HS Math Teacher

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    black and sooty

    i had planned to buy a pocket bike exhaust pipe eventually, i may end up getting it sooner b/c of this discovery...unless this hole is ABSOLUTELY nothing to worry about
     
  6. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    That rich. The more open the exhaust, the leaner it will run with a given carb setting.
    You are having float issues or just need to move your clip up a notch.
     
  7. misteright1_99

    misteright1_99 New Member

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    Did you clean it after you fixed the float problem from last night??
     
  8. MrLarkins

    MrLarkins HS Math Teacher

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    i never messed with the float last night and my clip is on the top notch (farthest from the point
     
  9. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Time to solder the jet closed and drill it out at the correct size, a common thing lately with the chinese in frame bicycle engine kit.
     
  10. MrLarkins

    MrLarkins HS Math Teacher

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    i am having a hard time locating a drill bit small enough...suggestions?
     
  11. Norman

    Norman LORD VADER Moderator
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    there is nothing wrong with the muffler must of been made on a Friday the china man wasn't paying attention to his welding. you got a main jet problem.
     
  12. misteright1_99

    misteright1_99 New Member

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    #12 misteright1_99, Aug 27, 2008
    Last edited: Aug 27, 2008
  13. MrLarkins

    MrLarkins HS Math Teacher

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    what size is my stock jet? .7mm? what size do i need?

    hobby shop? like hobby lobby?
     
    #13 MrLarkins, Aug 27, 2008
    Last edited: Aug 27, 2008
  14. Nitrohorse

    Nitrohorse New Member

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    Easiest thing to do is use the non-fluted side of a drill (end that goes into the drill chuck) and check the fit on your jet. Once you find the drill that fits the jet orifice, solder the hole shut and redrill with the next smaller size number drill. Wrap the drill bit with duct tape and use your fingers if possible to re-drill the hole since solder is very soft.
    I'm sure the other guys on here have another way of doing though that might be easier.

    I have use JB Weld in place of solder and had great results.
     
  15. MrLarkins

    MrLarkins HS Math Teacher

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    i have JB weld, i just used it to close up the tickler hole...no more tickler leak for me!
     
  16. misteright1_99

    misteright1_99 New Member

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    If gas is coming out the tickler closing it up might solve the problem of gas coming out, but it is NOT going to solve the problem of WHY the gas is getting high enough to come out of the tickler. A properly set float will not let the gas level come up high enough to come out. An improperly set, high float level will make the engine overly rich.
     
  17. MrLarkins

    MrLarkins HS Math Teacher

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    i think vibrations 'splashed' the gas through the tickler, it was pretty loose in there
     
  18. MrLarkins

    MrLarkins HS Math Teacher

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    i will fix 1 problem at a time...i think i bought a junk engine/kit....soooooooooo many thinks to fix!
     
  19. the_edge150

    the_edge150 Dealer

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    i recommend you take some JB weld and cover up the hole,then see if it makes a difference in performance and if it is still the same go ahead and get the pocket bike exhaust
     
  20. MrLarkins

    MrLarkins HS Math Teacher

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