Motorized bike choke lever loose

Discussion in 'General Questions' started by Kash66, Aug 13, 2015.

  1. Kash66

    Kash66 Member

    Hi I'm new to motorized bike, and I posted a lot of threads about my motorized bike loosing power and making a grinding noise when on full throttle, well today I open up my carb and I found that the choke lever was fully loose, it was dangling around. I tightened it. Before I put the carb back, I was wondering if anyone could tell me if that could have causes the power loss in my bike and the grinding noise on full throttle. Also when the choke lever was loose, my bike had been consuming a lot of gas, by a lot I mean a lot, the whole gas in the filter disappeared in a minute an anyone also tell me if the choke lever causes that.





    thanks guys for all the feedback,
    special thanks to Cylon for replying to everyone of my threads
     
    Last edited: Aug 13, 2015

  2. butterbean

    butterbean Well-Known Member

    Yes, the choke lever being loose could cause loss of power but so will a loose head gasket and a loose intake.
     
  3. Kash66

    Kash66 Member

    Lol thanks, I took of the head and tightened it an x pattern it should be fine now, also I took off the intake and cleaned it up and then tightened it well and now I think it's not leaking. Butter bean, can the choke lever being loose cause my engine too make a grinding sound while on full throttle.


    Thanks for the help
     
  4. butterbean

    butterbean Well-Known Member

    I think the grinding noise you are hearing is the engine trying to start. If the choke lever is loose, then it's not starting and its flooding the engine. What you need to do is pull the spark plug and pedal around the block, pull the clutch in and let it out a couple times, then wait for the spark plug to dry which will probably take all night, put the plug back in in the morning and try to start again but in the mean time you need to get a lock washer on that choke lever so it doesn't come loose again or you will have the same problem.
     
    Kash66 likes this.
  5. Kash66

    Kash66 Member

    My engine starts, I hear the grinding noise when I drive it around and put full throttle, could the grinding noise be the choke moving back and forth and side to side inside the carb. Also as I said my engine drinks a lot of gas, could that have also been causes by the very loose choke.



    Thanks
     
    Last edited: Aug 13, 2015
  6. 2old2learn

    2old2learn Member

    Make sure its not leaking gas anywhere. Check your spark plug to see if its running rich.
     
  7. Kash66

    Kash66 Member

    Sorry for the noob question but what do you mean by seeing if my spark plug is running rich. Well I am running rich on oil because I've noticed my mixture is very blue and the bike smokes light blue or white smoke.
     
  8. 2old2learn

    2old2learn Member

    If you take out your spark plug and examine the tip area and the porcelain around the tip area you can judge if its burning lean or rich. Lean means your fuel to air mixture has too much air and not enough fuel. Rich has too much fuel and not enough air. Ideally the tip area should be tannish colored, if its blackish colored it will mean its running rich. Once you know the answer to lean, rich or ideal you will adjust your carb settings accordingly. Its safer to run too rich versus too lean so if you adjust it be sure and follow up by checking your plug for the next few rides to see if you have it where you need it to be.
     
  9. Kash66

    Kash66 Member

    Thanks but how do I adjust the carb to make it rich or lean
     
  10. 2old2learn

    2old2learn Member

    That will depend on what type of carburetor you have. Most will have some method for you to make adjustments to your air/fuel mixture ratio. Once you find out what carb you have you can do a Google search for how to adjust it.
     
    Kash66 likes this.
  11. Kash66

    Kash66 Member

    I have the stock carb I think NT carb, Google says to adjust the e clip in the throttle cylinder/jet needle


    Thanks for the help
     
  12. 2old2learn

    2old2learn Member

    I suspected that would be what you had but I could have misled you without knowing for sure. I drive a four stroke Honda motor and I replaced my original carb with a rotary valve diaghram carb that acts as a fuel pump so I can eventually mount a fuel tank below the level of my carburetor as the honda motor has a top mounted tank on it. Let us know how it turns out. We are excited to hear from our new riders as your excitement reinvigorates our own fun of driving these bikes.
     
  13. Kash66

    Kash66 Member

    Ok I let you know once I adjust the carb,


    Thanks for the help
     
  14. Kash66

    Kash66 Member

    This is how my spark looked when took it off, it's dark and oily.




    image.jpg
     
  15. 2old2learn

    2old2learn Member

    Its been running too rich. I suspected you'd find it looking like that. That appears to be a copper plug. You may want to consider an iridium sparkplug. You will also want to adjust your carb setting leaner and then monitor it after some driving time. It won't take long to get it dialed in.?
     
  16. Kash66

    Kash66 Member

    I took off the carb jet needle and put the e clip to the leanest setting possible which was one down from where it was before. I cleaned the spark plug and let it dry. Could this dark oily spark plug have been causes by the rich oil mixture in the gas.

    Thanks again
     
  17. butterbean

    butterbean Well-Known Member

    It is normal for an engine to run extremely rich during break-in. It's really best not to time the carb or upgrade the spark plug until after break-in. Now that you've changed the clip setting, once you switch to a lighter mixture after break-in, the engine will most likely be too lean. Since you bought the bike used, it is not likely already broken in. You should probably be running at 4oz of oil to a gallon of gas.
     
    Kash66 likes this.
  18. Kash66

    Kash66 Member

    I made the bike, I bought the engine brand new and mounted it on, it has only gone through one tank of gas. So I assume that it isn't in the break in period yet, all I've noticed is that it consumes a lot of gas. My filter was full and it got emptied in just a minute.
     
  19. 2old2learn

    2old2learn Member

    Its still in the break in period. The extra oil could easily be causing the plug to look as though your mixture was running rich. Next chance you get buy yourself an NGK iridium BPR7HIX or 5944 spark plug for it. As I mentioned, when making changes to your fuel mixture check your plug regularly to make sure you dont run it too lean.
     
    Kash66 likes this.
  20. Kash66

    Kash66 Member

    Ok I will try getting myself one of those spark plugs. When I put my bike on neutral and roll the throttle, my bike takes 2-3 seconds to return to idle, is that a problem.


    Thanks
     
Loading...