Rebuilding My 80cc Walmart Motorized Bike

Try adjusting the air-fuel mixture.

Pull the plug and take a look

What happened to your finger

use 65

What carburator mainifold did you use so i could fit in the frame

Get a ngk spark plug

You need to buy a high compression head

Dude. lean it out. It's not even hitting the power curve yet. more air for sure. it should feel like it does now, but when the power comes on it should RIP! So first, go with a leaner gas oil mix... see if it helps cause thats easiest, then pull the air filter off and try it. then go for a smaller fuel jet. You'll know when it gets there!

It’s probably your carborater I had the same problem with the same brand new HP carb. The stock NT carborater I found works a lot better and has better idle and cold starts are faster.

give it a new sparkplug and make the fuel air mixture leaner

70 jet will work best...

40:1 cradle to grave. The intake manifold is probably creating some restrictions and the jet is too rich for the engine.

You only are doing bolt on parts and nothing special like big porting or anything. You need to put the 70 jet in, maybe go to a 72 but stock jets are stock for a reason you know. So try that cause you should be getting more out of that setup. Good luck brother.

The jet is right try with your clip on the needle up is basically leaning it out down is making it rich and pull the plug and make sure it’s not closed or make sure the bottom of your plug isn’t black that means your running way too rich it has to be perfect around 40:1 to make the plug brown and let it burn correctly. The next step could be weak connections through the CDI it could be your boot. Other than that if you need more help I can try to help out a bit more.

Moterbike Mike here, Dude I'd hate to say it but ditch toe hp carb and go with a regular nt- speed carb, and a 67jet and i promise you'll like it 💯 more. Persistence beats resistance always remember that just keep at it and keep your ears open you'll get there man .peace out brother

It would look cooler with rockets strapped to it

😎👍

For the gas it is 3.2 Oz. That equals 40 to 1. Never change it again always 40 to 1 and you should try a 65 jet

Muy buen video, al final en que nivel de chicler o esprea lo dejaste?

Un saludo desde México

"PromoSM"

try a better brand of oil

it may be getting too rich an air to fuel mixture raw gas doesn't burn well

If u have changed the stock carburator jet u would probably now have to play with the fuel needle inyector to regulate the amount of fuel entering from the intake tube into the cylinder. That only in the case u had noticed a decrease in power. If the engine get problems maintaining iddle RPM and you feel it accelerated to keep running that means the mixture is rich in air and poor in fuel. That may get to be the problem if you put a thinner carburator jet. If the engine ran ok with stock carburetor jet and u changed it try moving the needle whaser one or two places down and that' fix it. Otherwise you might be having candel spark rate problems and that is fixed by changing the CDI.
The float inside the carburator could also play a rol in fuel intake. Motorbikers from México recommend a distance of 2.1 to 2.3 cm from the bottom of the cube to the top of the float.

The air filter is restricting your carburetor from breathing good

Did you mix it correctly mine is a 16:1 mix during break in 20:1 after try reading up on it

that engine work wit out carborater

Tutorial on how u fixed the carburetor 😢…. Am building mine and am stuck 😢

Please make a video on how to start the bike and get it going… am done building mine, but I keep stalling it, and now it’s locked… please make a short tutorial on how to get it going for beginners

Run it 50 to 1 it's the best for then I have one it's perfect

You might haft to trash your engine entirely to tell you the truth. May be air leaks. I'll chose the Jetted free flowing NT carb ANY day over a HP or OKO. Factory exhaust actually works. I think the other stuff is just for looks really. I wanna just have the noise...

How did you install the clutch on your bike?

2 stroke exaust dont get hot you dont need heat tape

Smaller jet