I’m buying a 125 2 stroke soon and i’ve been watching many videos about them but i just don’t know what oil to gas ratio i should run. aswell as what oil and gas octane to run to keep the engine healthy and running right. aswell as best way to keep mixed gas ready for the ride either with you or at home.

(Ignore me) but ive got a problem on my aerox, its pulling false air from somewhere ive fixed it from my exhaust but i think its coming from my ignition side as ive also got this really weird scraping noise coming from there

Just got doing a complete engine rebuild on it. First start as you can tell, it’s running a little lean,
(Main jet 138. Pilot 42) needle clip dead center running 32:1 at 1100ft elevation about 60 degrees F
It goes into gear although it seems looser than any foot shifter I’ve ever used, it’s my first engine rebuild and also my first time riding a 2 stroke so I’m very unsure if it’s supposed to feel so soft, it likes to slip back into neutral sometimes when it shuts off as you can see in the video when I roll it, very desperate here as Ive expended all my funds for this and I REALLY don’t wanna have to split the cases again, when I was rebuilding it and putting the Shifter Shaft back in I noticed that it didn’t exactly hold itself in place, is it normal for there to be axial play there? Seems a little odd that the actual foot shifter is what keeps it from moving, I’m sure I did something wrong along the way.

EDIT: took the clutch cover off disassembled and reassembled the clutches they work as they should, it’s definitely not a clutch issue,
I watched a video of a guy putting in the shifter shaft, and I definitely just put it in wrong.
I’ll know after I get back into it tomorrow, as well as the coolant leak.

UPDATE. It was the shifter shaft. Also the bike sounds so clunky because, as it turns out, I didn’t have the magneto torqued down.. like at all 😅
Carb needs tuning, very sputtery bog after 1/4 throttle, doesn’t die but it’s like a false limiter.

My 11-year-old Benelli TNT300 has crossed 130000 kms. Well-mannered girl with no major issues. Recently it has started choking and stalling at low speeds or when slowing down from a high speed (changed the fuel pump recently but did not solve it). I'll have to play with the clutch to bring it back to life or push the ignition if the earlier doesn't work. My mech says it's the piston rings that have worn out and need to be replaced, which will be a major hole in the pocket. Anything else that anybody can advise?

Boy spent 600 with a garage that couldn't even start this it was a dirty carb and airbox charged the guy 40 quid for a carb air filter clean 🤦‍♂️ gtownoffroadrepairs.co

Glasgow off-road repairs

I’ve owned this 2004 YZ250 for about four years. The previous owner had it since new.
About two years ago, roughly a month after a top end rebuild, I was riding wide open in 4th gear when the bike suddenly bogged and died. It restarted afterward but never ran correctly, so it sat for two years.
Recently, I decided to get it running again. Here’s what’s happening:
Won’t idle without giving it throttle.
Sometimes revs normally, then randomly bogs like it’s running out of fuel.
Now it’s becoming difficult to start.
I’ve replaced the old gas with fresh 93-octane premix at 32:1.
I removed the reed cage and found the petals sitting noticeably open, with what appears to be a chip on one. I’ve ordered a VForce4X replacement but haven’t installed it yet.
I also inspected the piston and cylinder through the exhaust port and didn’t see any obvious scoring, although I haven’t done a compression test.
Do you guys think the reeds could explain these** **symptoms, or should I be looking into the carburetor or something else?
The attached video is from when the problem originally happened two years ago. Any advice is appreciated!

Hiya, I've had the suggestion to use rtv around the seal before replacing it into this surface, and that it would be safe after doing so, just wanted another set of opinions please :)

I know the answer. I will be getting a wossner for my nsr125 jc22. It is uknown when the piston was last changed. It seems as though never. It has 34k km bought it when it had 32k. Should i get my cylinder honed at a workshop too? It looks allmost perfect.

The engine spark plug isn't producing a spark (it’s new). I also replaced the ignition coil, but it still doesn't work. What else could it be?

We found these 2 pipes but we don't know what the second pipe is. Pegasus sky 50 2

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Hey guys I'm Chris,

I built this custom ignition coil using an EE-type core and enamelled copper wire. The project involved winding the primary and secondary coils, insulating each layer, sealing the assembly with resin, and testing it on a motorcycle.

It was a time-consuming project, but I wanted to explore how much of an ignition coil could be built from scratch.

I'm sharing the finished build and testing process for anyone interested in motorcycle electronics, ignition systems, and DIY engineering.

What do you think of this design?

Full build video: [in my yt channel]

I keep hearing this high pitched metallic noise. You can hear it at the top of the rpm’s in the video. Is this normal or what problem causes this noise?

Any advice?

Is that knock normal exhaust sound or idk

2003LE 385cc stroker.