[Solved] WANGYE WY50QT-7A Scooter Struggles Uphill, Loses Power After Long Rides

Hello, I have this problem. I've had my scooter for a few years now, in the past going up the same hill didn't make it as choked as it is now, on top of that after a long ride it lacks power and I have to pull over e.g. to a stop, wait a while, and a miraculous recovery occurs. .

Model in evidence WANGYE WY50QT - 7A a. On the sides it says Benzel Barnet. 05995 km driven.

Other than that the scooter is unlocked, it used to be able to go 90km/h and now at 70km/h something like, I don't know how to describe it, it rings like a little chain and won't go any faster. I haven't done anything about it over the years because I don't ride much and I've been saving it, but it's this problem with the top end that has me thinking and asking you guys.

I've taken the cover apart where the drive belt is to see what's there and how it's there, but I haven't deduced much, I've taken a video, maybe someone can advise/advise.

.

I noticed something else today before always when I fired up the scooter it would add gas and the wheel would spin in the air and in that air it would always spin a little bit now when the scooter fires up it doesn't have this so called suction and the wheel stalls.

BTW what are these sprockets for and what are they because they don't spin?

.

Hello.
This "zembot" is from the starter.
Have you checked the compression?
Greetings.

D_Mrozu wrote:

Hello.
This "zembot" is from the starter.
Have you checked the compression?
Greetings.

.

Actually it's the starter, now I see.

I haven't checked the compression, I don't know how to do it (yet? because maybe I can find it on the net just like with the copter lubrication).

Hello.
My engine in a HANGLONG 50QT16 ran out after about 8000 km - the intake valve seat in the head fell out. The result - it was very hard to start the moped, total loss of power (no compression). To check the compression you will need a manometer for checking petrol engines. You can buy such a "mouthpiece" for a few dozen PLN on the well-known auction portal All...ro.
Regards.

The first follows from the second.
If there is no so-called compression it means that the "engine is worn out" in very general terms.
The cylinder has been scraped by the rings and the piston is unable to create adequate compression pressure.
The rings have been so badly scraped by the cylinder that they are unable (despite sealing) to create adequate compression pressure, and what follows....
Several more reasons can be given for this.
Where did this come from?
Stressing the "Pikus" beyond its capacity.
Recommendations - fix it, thank Pikus and apologise to Pikus for this behaviour that knows no restraint.
Clearly, other reasons will also be found.
Here, clearly - wear and tear on the engine.
Other reasons, worse for the whole machine.

KaKamilo wrote:

after prolonged driving it lacks power

.
If this lack of power is caused by a significant drop in engine speed - especially when driving uphill, then as written above - a worn engine.
If, however, it manifests itself by the fact that (when going uphill) the engine is running at high revs and the scooter is slowing down, the reason could be a worn belt and possibly a clutch.
The clutch is the component you were spinning and asking/not knowing what it is.

Greetings.

I've noticed something else now, before, whenever I fired the scooter up it would add gas and the wheel would spin in the air and in that air it would always spin a bit. Now when the scooter fires up it doesn't have this so called suction and the wheel stalls.... so maybe it is actually something with the clutch?

Perhaps replacing the belt and the whole variator would help. Maybe the variator plates are already "worn out" and the belt has had enough, it doesn't pull as it should and there are slips....

KaKamilo wrote:

so maybe it's actually something with the clutch ?

.
If you answer the theses in post #6, you might get a more detailed clue, otherwise we can only speculate. Unless you go to some mechanic.

Regards.

DjMapet wrote:

KaKamilo wrote:

after prolonged driving it lacks power

.
If this lack of power is caused by a significant drop in engine speed - especially when driving uphill, then as written above - a worn engine.
If, however, it manifests itself by the fact that (when going uphill) the engine is running at high revs and the scooter is slowing down, the reason could be a worn belt and possibly a clutch.
The clutch is the component you were spinning and asking/not knowing what it is.

Greetings.

.

Well going uphill it's like this it rides going slower and slower the engine doesn't howl it doesn't get tired it just slows down and you can feel every bump of the bump giving it the revving power to get up the hill but these small scooters are almost all like this this this hill quite large and long but years ago it was manageable....

When riding on the straight it went 90 without a problem and when I took an aerodynamic position it even went more Now at 70 it is already cutting off and doing as I wrote like little bells or keys from an aluminum can to shake in the bag

And after prolonged driving it sometimes happens as if it runs out of fuel or something and runs out of power that when you add on the handle it does not change anything it gets weaker but keeps revving and you have to wait a while and a miraculous recovery happens everything is normal again here I suspect the fuel filter

in the evening i watched a couple of videos on YT from "Centrum Motocyklowe" and i understood a few things and i already know what i can grease and what i can't check the compression and i will try to go to someone but the thing is that neither friends of friends do not deal with scooters because it does not pay them in money/time they prefer to repair motorbikes because they make more money and all i hear is i have no time i have no time I have no time and the services in our country do not have a flattering opinion more they broke as they did and you have to look for parts yourself because you know scooter = Chinese crap if you unscrew something you can no longer screw it and this type of texty from professionals because you know Service and scooter shop must turn around business tell your grandfather that it can not be repaired then buy a new one then the old one for scrap and they buy back after acquaintance for parts

https://www.youtube.com/channel/UCxPURoTs8SGslNVL7cK-2EQ/videos

Today the weather was good and I had a chance to check it for the last time before leaving for a business trip on a hill, it went out completely on full power and I couldn't get someone to check the pressure on the pistons etc. so far I haven't found anyone with the time to do it, but I'm not going to do it myself because it's rumoured that something can go wrong with the electrical system that is responsible for the voltage at the spark plug or something like that.

https://youtu.be/1x3QTzQiIds?t=176

KaKamilo wrote:

Today the weather was good and I had the opportunity to check for the last time before leaving on a business trip on the hill it went out completely on full manual and other incidents I was not able to record someone to check the pressure on the pistons, etc. etc. so far I have not found a disposable person I will not do it myself because supposedly something there in the electrical system can be broken responsible for the voltage in the plug or something like that.
I would rather not make any effort with equipment that requires so little money. A colleague asked and we suggested...
That's all there is to it. The machine is simply worn out. It can be resuscitated, but for what sins??

.

Check the variator pulleys.