[Rambo 76]

Hey guys,

I'm kind of new to this forum and I was wondering how does this high idle come from and how to do I fix it? I haven't road on my bike for a while, I think it was like 3 months or so, but every time I start it up, it just accelerates on itself for about 4 sec and then turns off. I checked the air filter and the spark plug. I also tried tuning the idle screw clock wise and that didn't work. Its a 47cc. Thanks!

 

[glocksmith]

Welcome, it could be caused by an airleak have you checked that out yet???

 

[glocksmith]

Welcome, it can be caused by an airleak around the intake manifold or/and the carb...have you check that yet??

 

[EPR]

Turning it clockwise will make it idle higher, counter clockwise to lower the piston. Could have an air leak the plastic int manifolds get old and hard and warp or time. Or your reeds might not be sealing on the pads.

 

[glocksmith]

sorry for the double post...work computer sucks!!!

 

[Rambo 76]

No I haven't checked the air leak actually. I was thinking of cleaning the carby

 

[Rambo 76]

I'll try turning the screw the other way

 

[N!pples]

My guess is the air leak.. if it was running fine with the carb settings before you stored it.. Try to get it to idle a little and spray carb cleaner around the intake manifold.. If it dies you have a air leak there..

 

[Rambo 76]

So the air leak has to do something with it shutting off and geting it to idle has to do with the high idle. K

 

[MathieuOuellette]

maybe has something to do with the killswitch. remove the grounding loop from the bolt holding the pullstar, it and try it again. to shut off after remove the plug cap.

 

[CAM2]

My guess is the air leak.. if it was running fine with the carb settings before you stored it.. Try to get it to idle a little and spray carb cleaner around the intake manifold.. If it dies you have a air leak there..

On my half fairing cag I bought running for 30 bux a few years back from a member here I had installed a 14/14 rep carb on it and it had to be rejetted and adjusted quite often to get the engine to run right day to day or when it wouldnt run right just chuck it back in the basement and grabbed one of my trusty piston ported rides like X1/X2 harleybike or stand-up scooters because they always started up and were easy to keep in tune and offered more fun....

When theyre used and run as stock lawn equipment theyll run pretty much the same because theyre built a bit choked back and retarded so jetting/tuning isnt so much an issue...

Once you use that same engine for purposes its not actually intended for you must change the characteristics of the engine to be able to and after that it becomes a labor aswell as a hobby to keep it running its best and tuned-in with a floater carb...

Ive come to find out that in order to maximize fun on these little things a pumper carb will do that for ya..Some pocketdirtbikes and pocketquads came with pumper carbs already and IMO are the best models to get and emulate engine/carb wise....Good Luck....

 

[N!pples]

Ya, I need a few of those carbs in stock.. I just need more work so I can keep up with my pocket bike hobby first... lol

 

[Rambo 76]

i turn the bike off by putting the choke down, which is weird because i thought when you start it up, and when you here the engine die ur supposed to put it down and then give it a shot.
Im getting a kill switch obviously, but does anyone know what the kill switch is connected to?

 

[EPR]

The switch grounds the coil, that's it. Run the small wire off the coil to one side and the other side of the switch goes to the frame, so it can return to the battery. Some times there is 2 wires off the coil, touch them to together to stop the engine, one of them wires are grounded at the coil mount.

 

[Rambo 76]

Thanks
...looks pretty obvious lol