I have a stock x19 pocket bike with a few problems.
1. When I first cut it on it seems to get really hot really fast. Im not sure if thats a problem or not but could you please let me know & how it could be fixed.
2. At WOT it feels like its boging down a little bit. I just cleaned the carb out like 2 weeks ago. Im going to clean it out again as soon as I get some carb cleaner. Should I jet it or what.
3. Before, when I ride around, it will cut off & not crank back up. Today I was riding & it cut off but then it crunk back up & then it cut off again & would not crank back up. I looked at my spark plug (pic below) & it was ash white. I then looked to see if I was geting a spark from the coil using 3 different spark plugs & I wasn't.
Any help to any of these 3 problems would be great.
Youre running too lean.The white plug proves that..Youre gonna have to fatten up the a/f mixture screw or reset the float.It may be set too high,if that doesnt work out too well youre gonna have to jet it up to a 75 mainjet.Another thing to check for is an airleak at the carb or intake..The sudden shut offs and hard restarts is a problem with your float restrictor or an air leak.The restrictor tab holds the float too high in the bowl all the time.That keeps the float needle really close to the needle seat.The float needle should be able to drop low enough to allow a proper rate flow of fuel to keep both jets immersed in fuel at all times.When the bike is running bouncing and vibrating its bouncing the needle up and down and that up n down movement is momentarily stopping the flow of fuel under load causing your bowl to be low on fuel and the engine to run lean..A lean running engine is a hot running engine and will cause it to get up to and go beyond normal operating temps quickly which causes premature engine death.............Peace
Youre running too lean.The white plug proves that..Youre gonna have to fatten up the a/f mixture screw or reset the float.It may be set too high,if that doesnt work out too well youre gonna have to jet it up to a 75 mainjet.Another thing to check for is an airleak at the carb or intake..The sudden shut offs and hard restarts is a problem with your float restrictor or an air leak.The restrictor tab holds the float too high in the bowl all the time.That keeps the float needle really close to the needle seat.The float needle should be able to drop low enough to allow a proper rate flow of fuel to keep both jets immersed in fuel at all times.When the bike is running bouncing and vibrating its bouncing the needle up and down and that up n down movement is momentarily stopping the flow of fuel under load causing your bowl to be low on fuel and the engine to run lean..A lean running engine is a hot running engine and will cause it to get up to and go beyond normal operating temps quickly which causes premature engine death.............Peace
Thanks for the advice. Would this solve all 3 of my problems or would I have to do anything else?
Cam is right on, you are definitely having a fuel starvation problem. Good cleaning is a start, you need to blow through the jets until you get a good clean stream of carb cleaner blowing through the other side. Check for little black specs in the fuel that is in the float bowl (try not to tip the carb when removing it so the fuel stays in the bowl so you can look at it) the black specs are a sign of your fuel line coming apart. You might have a sticking float or something else cutting your fuel off.
make sure the black spacer on the carb has the o ring side against the metal intake manifold
I don't know what it is called but I have a pic of it. The O ring is not all the around in a full circle & if you can see it, it looks like the whole thing is going to rip.
You need a new o-ring.Your problem is a wicked airleak..Bring the phenolic spacer to ace hardware or true value and get a new o-ring that fits.Get a new one for the carb mount also..........when I install them I use either a little vaseline or anti-seize compound and coat the o-ring at the spacer and carb mount to eliminate the possibility of air getting by the o-ring by always maintaining a moist seal aswell as keeping it lubricated against drying and cracking..........Peace
Well, I fixed the air leak problem but now I can see that im not getting any spark to my spark plug. What could be the problems & what should I check for? I really need help so I can get this bike running like it was before all of my problems.Thanks
um did you have a spark problem before just get the carb back on and try to start it if it doesn't start check the coil grounds and plug seating, maybe you knocked something loose when you were messing with the plug and just incase u forgot to turn the key on
I had a spark before but it wasn't that good of a spark. After I put the carb on it, it crunk up but then after maybe 10 seconds it cut off & would not cut back on. I then checked to see if I was getting a spark & I wasnt.
Well I have come to the conclusion that I may have a wiring problem. The wires that come from the magneto/stator on the left side of the motor, are loose. When I pull up on them then I do not get a spark & when I push them down, I do. Also, My bike is now not cutting off. So now I have to pull the wires from the magneto/stator up to cut it off. Please help as I am trying to fix my bike by the end of the week.
Well I have come to the conclusion that I may have a wiring problem. The wires that come from the magneto/stator on the left side of the motor, are loose. When I pull up on them then I do not get a spark & when I push them down, I do. Also, My bike is now not cutting off. So now I have to pull the wires from the magneto/stator up to cut it off. Please help as I am trying to fix my bike by the end of the week.
I am not sure what help you are asking for, you just identified and isolated your problem so now see what is going on in there and fix the wires, we can't see them.
I am not sure what help you are asking for, you just identified and isolated your problem so now see what is going on in there and fix the wires, we can't see them.
I just wanted to know if the wires from the magneto/stator on the bike will be a problem in the future & also, how could I fix the problem of my bike not cutting off.
The picture below is the wire that I am talking about. Its the one that is coming straight up from the engine. If I need a better pic then let me know.
You may have a friction problem with your magneto, take your side off, make sure, the wire is being held down on the right side of the case facing from the outside the cover.
The killswitch wire comes from the CDI box....Its the black wire with the white stripe....Grounded against the frame,the killswitch activates.................Peace
Well I found the problem of why my bike isn't cutting off and I fixed it. The problem was of my keyswitch wires.
I have gotten all the bolts holding the cover on the magneto off, but it is not coming off. Am I missing a bolt somewhere or what? I'm going to try at it again tomorrow.
You need a new o-ring.Your problem is a wicked airleak..Bring the phenolic spacer to ace hardware or true value and get a new o-ring that fits.Get a new one for the carb mount also..........when I install them I use either a little vaseline or anti-seize compound and coat the o-ring at the spacer and carb mount to eliminate the possibility of air getting by the o-ring by always maintaining a moist seal aswell as keeping it lubricated against drying and cracking..........Peace
Do u think that it would be alright if I ride my pocket bike around without the black spacer between the carb and intake? And also is there something I should do to the carb in order to do so?
Also I have fixed my magneto wire problems by taking the cover off and inspecting the inside of the magneto.
Well I have my pocket bike running well now but I have 1 quick question about the choke. I don't know if it is a problem or not but I never have to use the choke when starting up. I couldve sworn that I read on a thread that when that happens something needs to be done. Please respond so I can go & fix it if it is a problem.
A few problems 
