What the heck? - Scooter bogging out after half throttle, why? 

It could also be the spark plug..

Roller weights flipped sideways... bike stuck in "high gear" take the cover off and reset the weights

@@pastorjoesackett What cover?

​@@YouSpewedcarter

@@pastorjoesackett thanks for replying, but I don’t understand any of what you said. Could you explain it in a way I could understand please?

How uClean it

@@shaykh_0215 open it up and spay it with carb cleaner. I also drilled some holes in the exhaust, they can get clogged with oil and it messes with like the pressure waves.

My brother just said this not to long ago that I gotta change the spark plug

How is that even possible? The spark plug gives the engine a spark to START it. After it’s started and running, why would it be the spark plug?

​@YouSpewed the more it revs the more speed the spark plug ignites for the engine old or worn plugs kills it

@@rubygem7386 if you say so. I’m gonna try it, cuz mine is bogging down and getting harder to start.

@YouSpewed I've had the same problem once I've changed everything even the carburetor but it was the spark plug hoe ironic

Or just a crudded up carb.

@@willimitus how do you clean the carb

@@shaykh_0215 remove the carbureter. Take the float bowl off and and the jets out. Spray a bunch of carb cleaner everywhere, then put it all back together exaclty how it came apart. Some seals may need replaced. And dont drop the little jets.

It's not bogging down it's revving up

I honestly can't imagine how crank seals could cause this issue. I'm not a 2 stroke person so I can't be certain. What task does a crank seal perform that could cause bogging under load?

@@ZCRAIZED1 2 strokes use the crank case as the air intake, so if too much air is forced in from piston and the crank seals are bad, it expands the bad points in the crank seal and cause air leaks, then if the mixture isn’t right in the cylinder it’s never going to run properly

@@Jam70cc I appreciate the knowledge. I definitely didn't know that about those engines. So as a 4 stroke has air from the atmosphere going through it a 2 stroke is pulling air through the carburetor that comes from the crank case? Where is the air inlet to the crank case to be able to supply that much flow to the carburetor? It's not your job to explain all of this. I can find it online. I am just blown away that all the fresh air going into a carburetor is from the crank on a 2 stroke. I have never worked on one but that is just mind boggling.

@@ZCRAIZED1 because a 2 stroke doesn’t have internal oil, it gets it’s oil from a pre-mixed fuel supply that has oil in it. This pre-mix fuel is fed into the carburettor along with the air and is ported straight into the crankcase, supplying the big end and small end bearings with lubrication whilst using the intake port on the cylinder wall to feed the combustion chamber with air and fuel. This way, all necessary parts have lubrication and the combustion chamber is fed with the correct air-fuel mixture. I must have explained wrong in the other comment but it goes; carb - crankcase - combustion chamber

Yeah true

Spot on

Wait ..for testing? You mean to complete block air flow and see for the diagnosis? Right or am I missing some secret tech!?!!

The gas valve could be clogged so it's probably not sending gas to the carb

@@jomarcruz659When I accelerate, it starts making noise and hesitating, and I can’t get it to go as fast as it usually does. I recently changed the belt and think I might’ve messed up the air filter when I did it. Or maybe the belt is slipping? Or maybe both? Or the gas valve could be clogged? It seems like it’s a little better if I drain the carb and add gas treatment to it. I think it’s a combination of some of these problems.

@@YouSpewed have you tried opening up the carb they have a little needle that sends gas it applies for both bikes and power tools

@@jomarcruz659 Yeah, I’ve tried tweaking that a few times, but thanks.

@@YouSpewedMine is doing the same thing

did it fix it?

Did it work? Mine has the same issue but mine will turn off

I had to tune carb and clean air filter 🤧

It’s the carburetor had the same issue just needs to be clean sometimes replaced

If your not using the original filter for the carb then I suggest you do since i had the same problem

my issue is that everytime i fullthrottle engine shits off . everything else is good...

I think mine shudders after half throttle cause I left bad gas in it it still does it with air filter off

What is a cdi

a cdi is like the computer on cars ,it gives comand with spurkplug and so on...its a small box with few wires going into it

yea that’s the exact same with me but mine does that at about 57 khm

Hi, did you find out what was the problem?

Yeah this is exactly what I've been trying to find! There is not videos at all and I'm baffled on what's doing it but I may have have a clue. The first couple times it did it because when I changed the spark plug, I stripped the threads in the spark plug hole. The threads are easily stripped if not paying full attention to how your screwing it in. So I had to get the heli-coil kit to fix it and then it ran like new again. Well its been a few months now, and I changed the spark plug again and totally forgot that I put a heli-coil spring in the hole because I had rethreaded the hole. When you rethread the hole, you rethread it with a tap that is one size up than the hole so that the threads can be completely brand new and then you insert the spring into the hole which acts as the original size hole and threads. Well, it just hit me that the spring is gone after changing the plug the other day but yet somehow the spark plug went in tightly when I screwed it in. Well during the first ride after putting the new spark plug in, it bogged down after a few minutes of riding at full speed. The spark plug was loose. Tightened it up and it ran normal. It happened again but plug wasn't that loose. Now it's happening without the plug even being loose... yet I tighten it even more and I'm good for a good few miles until it bogs me down to 5mph again. My guess is that the spark plug hole has micro size spaces in the threads that cause the high compression at full speed to be released from so much high pressure..... also, I noticed the spark plug cap is missing one of the little copper bars in it that allow the top of the spark plug to snap in between them and hold onto the plug tightly because now the cap sits on it loosely. Doesn't come off while riding cause it's still slightly snapped in by the 1 remaining copper bar in the cap, but it has a lot of wiggle room. So, loss of compression and spark?

​@@donaldwoods8420 sorry late, i checked on my Sp and its all good fit, so i too tried to clean my carb but nothing changed, the mistake i made was i didnt pulled out my Sp, then saw it that time, it was so black, also searched more of this problem.. the one that solved it was its either lean or rich bog, saw some vid about this. tried to study how to tune carb, took me a week to get it normal, now my lil scoot is normal :)

​@@StromtrooperV2 it was too rich

Im having same issue

i have a 50cc keeway hurricane and the vacuum thing just wont get air whenever i take it out and suck air from it , it sends some fuel to the carb

now idk what to do

Did you fix it?

@@CrocodileTeeth592 yeah wi h that problem I just made a new air filter from a plastic bottle and put some holes in it and a sponge put inside. Blew my piston , so I though might aswell upgrade to 70cc and now won’t start, it turns over but makes popcorn noises and won’t start. Got fuel, compression and spark not sure what to think

is that can be a issue?

so do i mate so did u fix yours

@@mhtv4461 Airleak or u need to fix ur main jet

Did you ever find the solution? I have the same problem

I was thinking that it was running rich too not lean like everyone else was saying because I had this problem on a electric start weed whip

This is what I do with mine. Got a small intake box leak, but left if for now, as it doesn't affect the overall performance and actually adds a lil bit of extra cool air which isn't so bad in the winter. It bogs like shit for the first 5 minutes of riding though and I have to basically hold my front brake and keep the throttle barely touched for it to keep the fuel fed. Mine is almost assuredly a vacuum leak, as it operates fine at temp and feeds gas fine at speed, but I'm too lazy to grab duct tape rn and am just gonna ride it for a week or two, before ordering a new box online. I hear a lotta people run their airboxes funny and these gy6's never work 100% anyway, so why bother lol.

it's the vacuum from the air filter i had mines plugged in after i tuned and it kept getting to much air i unplugged the rubber hoses from the air box filter and it stope that issue going and let the air box breathe for it self it stoped that problem to much air

💀💀💀💀

Good luck finding a carb with that option...

​@@jarrydarrah3064all these have it wdym

@rubygem7386 wrong! Impossible to find a carb that fits a gy6 that also has adjustment screws, and that's also not made out of plastic or damn $70

@jarrydarrah3064 I'm talking about those scooters that are 2 stroke

I have a Yamaha Jog R 50 - is doing the same.

Come on bro everyone knows that the right side is the side with blinker fluid in it 🤦 it's cool maybe you forgot I guess it happens 2 some and dont let this get you down bro tho ok . It was a nice try tho high five year 🙏

na i changed it and still does the same thing

I change my black box I put in new carburetor new air filter and it still not taking the rev whenever i rev it out the bike start chock and make some load backfire

Having the same problem, I took the carb out cleaned it completely cleaned all my jets, ran a little fuel injector cleaner thru it, though I don't put anything under 90 in mine, changed spark plug , and tried a brand new cdi and none of that fixed my problem either

17.5 is fine on 50/70cc