New to THESE THINGS(HELP) - PocketBikeForum.com

Clutch · 11-06-2007, 10:47 PM

I just got another bike and i poped a hole in the piston, i put a bigger piston in, and a new carb, the bike will start with the choke on but as soon as you turn it off the bike dies....... lots of compression plenty of spark, and the gas is getting to the carb because it is leaking out of the overflow... i dunno..

inthelead83 · 11-06-2007, 11:02 PM

jetting my friend jetting it sounds to me you are running toooo lean

*Sleeves* · 11-06-2007, 11:08 PM

to know if it is ur jetting for sure , check ur plug !
black in color , it is to rich , Very white , too lean , if it looks like those brown flower pots , the color i mean , then it is perfect !
when i say color , it ,means take out the spark plug , and look at the inside area of electrode , the spark area !

Also , are you sure you do not have a vacuum leak ?
did u reuse gaskets or anything that may allow air to get in on the motor side of the carb . ie. reed area , intake manifold , head gasket .

Clutch · 11-06-2007, 11:19 PM

Well when i first got it together, we had to pour gas into the carb to even get it to fire, pulled it 50 times nothing so we used gas in the carb and now it will fire on it's own but will only run with the choke on....

the choke being off is allowing more air than gas meaning that the jet needs to be upsized to allow more fuel, because there not enough fuel going in through the jet... right or wrong

*Sleeves* · 11-07-2007, 07:25 AM

if your running the stock carb , try adjusting the notches on your needle . I think in your case , if it is in fact to lean , the clip must be brought down, which in turn will allow the needle to sit higher up . Allowing more fuel by ! Also , your carb adjustment or idle screw , where do u have it set , meaning how many turns out from completely in ?

11-06-2007, 10:47 PM	#1 (permalink)
Clutch Hi I'm new here Be nice to me Join Date: Nov 2007 My Gallery Real Name: Rick Pocketbikes Owned: 3 Posts: 3	New to THESE THINGS(HELP) I just got another bike and i poped a hole in the piston, i put a bigger piston in, and a new carb, the bike will start with the choke on but as soon as you turn it off the bike dies....... lots of compression plenty of spark, and the gas is getting to the carb because it is leaking out of the overflow... i dunno..

11-06-2007, 11:02 PM	#2 (permalink)
inthelead83 Pocketbike King Join Date: Nov 2005 My Gallery Real Name: Shawn Pocketbikes Owned: 5 Location: Pine Ridge Posts: 1,865	jetting my friend jetting it sounds to me you are running toooo lean __________________ RCMRRA - Vice President Proud Owner of: Modded Blata b1 Origami, Blata Elite 11, & Moto-Vert www.rcpra.net 3rd Place overall in CCMRRS 50cc pocketbikes 3rd Place overall in CCMRRS Open Mini Motard

11-06-2007, 11:08 PM	#3 (permalink)
Sleeves Pocketbike Dealer Join Date: Oct 2005 My Gallery Real Name: ??? Pocketbikes Owned: 2 Location: winnipeg Posts: 2,568	to know if it is ur jetting for sure , check ur plug ! black in color , it is to rich , Very white , too lean , if it looks like those brown flower pots , the color i mean , then it is perfect ! when i say color , it ,means take out the spark plug , and look at the inside area of electrode , the spark area ! Also , are you sure you do not have a vacuum leak ? did u reuse gaskets or anything that may allow air to get in on the motor side of the carb . ie. reed area , intake manifold , head gasket . __________________ RCMRRA OWNER 06' P1 BMS competition BZM 15.5hp Open 50cc 05' DM Telai - ZPF 18 h.p Open 50cc 07' Pitsterpro 125cc 08' CBR125r 96' Gsx-r 600

11-07-2007, 07:25 AM	#5 (permalink)
Sleeves Pocketbike Dealer Join Date: Oct 2005 My Gallery Real Name: ??? Pocketbikes Owned: 2 Location: winnipeg Posts: 2,568	if your running the stock carb , try adjusting the notches on your needle . I think in your case , if it is in fact to lean , the clip must be brought down, which in turn will allow the needle to sit higher up . Allowing more fuel by ! Also , your carb adjustment or idle screw , where do u have it set , meaning how many turns out from completely in ? __________________ RCMRRA OWNER 06' P1 BMS competition BZM 15.5hp Open 50cc 05' DM Telai - ZPF 18 h.p Open 50cc 07' Pitsterpro 125cc 08' CBR125r 96' Gsx-r 600

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11-06-2007, 11:19 PM	#4 (permalink)
Clutch Hi I'm new here Be nice to me Join Date: Nov 2007 My Gallery Real Name: Rick Pocketbikes Owned: 3 Posts: 3	Well when i first got it together, we had to pour gas into the carb to even get it to fire, pulled it 50 times nothing so we used gas in the carb and now it will fire on it's own but will only run with the choke on.... the choke being off is allowing more air than gas meaning that the jet needs to be upsized to allow more fuel, because there not enough fuel going in through the jet... right or wrong