Throttle Question

Discussion in '2-Stroke Engines' started by k_pitman, Aug 13, 2008.

  1. k_pitman

    k_pitman New Member

    Hey everyone, just a quick question about my throttle. Does everyone else's throttle take a while to kick in when twisted to it's max? Whenever I twist my throttle back to really gas it, it takes a few seconds for it to start to gain speed and I was just wondering if this is normal. It doesn't bother me, just curious.
     

  2. Bronzebird

    Bronzebird Member

    3rd test ride completed

    Here is my $.01, no.

    I get an imediate grunt from throttle response and mild rear tire response at 10-15 mph. I hope your clutch is not slipping? High rpms with no retire response. Keep me posted on what you find out. How many miles do you have? Me=3 :eek:
     
  3. k_pitman

    k_pitman New Member

    thanx but after riding a bit more it tended to become a lot more responsive. I guess I'm still beaking the motor in. Now it responds as soon as I start to twist. I've been breaking it in pretty good today too. I've had it riding for about 3 days now and i've put about 35 miles on it already. Is that what u were asking? lol I do have a question tho, can u idle your bike when standing still? I wanna see if I can have my bike at a standstill and rev the engine ya know? Whenever i try to pull the clutch back and stop the bike all i get is a BURST of high revs coming from my engine, even when I'm really close to stopping. Can u rev your engine while stopped?
     
  4. Sounds like you may have an intake leak. Check your plug to make sure your not running lean. LEAN=BADDDDD!!!!!!!
     
  5. k_pitman

    k_pitman New Member

    I'm gonna sound like a gigantic noob but what does "lean" mean? does that mean lean of the Carb or what? :p
     
  6. pedalpower

    pedalpower Member

    the yin and yang of the happy time.

    lean is fuel starved=yin
    rich is air starved=yang

    hope that helps.

    now find the razor's edge grasshoppa
     
  7. k_pitman

    k_pitman New Member

    That does help. Thanx oh wise masta. haha. So ur thinkin I may be having to much air mixing with my fuel correct? By checking the plug do u mean the 4 holed black thing on the carb?
     
  8. pedalpower

    pedalpower Member

    the spark plug is the best way we have of assessing the combustion quality of the fueloil/air mixture. operation quality is also important. If you are reving at standstill you may have an air leak-commonly caused at the carb/intake manifold connection (a flat washer against the inside the carb is a great solution.

    Is your idle screw (on the left side of the carb) screwed all the way in? Unscrewing it allows the throttle slide go down which inserts the needle valve into the jet opening.

    too much air means you are running lean which causes the motor to run too hot-looking at the plug is good way to confirm that.

    if you can't kill the engine with the choke lever in the up position you may have an air leak.
     
  9. Bronzebird

    Bronzebird Member

    So I was using the cable adjustment on top of the carb for idle adjusment. I now know that the screws controls throttle needle height...And no air jet?
     
  10. pedalpower

    pedalpower Member

    that barrel adjuster on top is to remove the slack in the cable and housing-there is another at the other end by the throttle-get that set before you adjust the idle adjusting screw. correct, there is no air jet. you are mostly adjusting the amount of fuel mixture for the relatively constant amount of air (stock set up anyway).
     
  11. k_pitman

    k_pitman New Member

    I'll tell u the absolute truth, this very well may be my high reving problem. My bike's frame didn't let me mount my carb directly up (top bar is to low for throttle, i wish i would of known this about my bike :( ) and so i had to make it as vertical as possible and this made the carb not hook up to the manifold allll the way. I got it as much as i could and went and got a hose clamp and tightened it all the way and then secured the carb even more. I know this is a very barbaric way of doin it but i wanted it on so bad, and right now it's working :p could this be the reason for my high revs?
     
  12. Bronzebird

    Bronzebird Member

    Hmmm...desperate to finish. Can you take off the rear mount and shave the back side down on a grinder or band saw? Looks like you can take off at least 3/8". Will this help lower the motor on the frame. Slide the front of motor down too with the extra space. If you can post a picture it would be more helpful.
     
Loading...