I need to turn the key off and then turn it back on again before the panel lights and signal lights work properly again. However, the headlight remains working even when the panel and signal lights stop working. The motorcycle battery is also brand new.

What could be the possible cause of this issue?

⟐ Commented July 06, 2026 at 18:59 MST

I was able to start the bike and it ran for about a minute so I tried increasing the RPM with the throttle. It revved up but then began to sputter and die. Restarted it resulted in sputtering and dieing.

The next day I tried again and it ran smoothly for about a minute until I tried revving it up. It began sputtering and then died again. I was unable to get it started after this.

Now all it does is crank with no start.

Any suggestions for what to look for or change out?

⟐ Commented June 30, 2026 at 4:43 MST

Translation Persian → English

CB400 Carburetor Repair

CB400 Carburetor Repair

⟐ Commented June 30, 2026 at 1:56 MST

⟐ Commented June 28, 2026 at 14:42 MST

⟐ Commented June 26, 2026 at 3:17 MST

⟐ Commented June 01, 2026 at 15:27 MST

⟐ Commented May 10, 2026 at 12:14 MST

I bought this moped a month ago, is a Chinese moped 2 stroke with a vertical engine, same as the Yamaha jog, I bought it with a bad carb issue, I bought a brand new carb called 1pz 19mm, I put it on, and my first stroke was that I plugged the fuel line on the wrong input it did started some how but died like a minute later, then I mask usted the float thinking it was the issue, but it wasn’t, now it Boggs every time I hit the throttle like more than 25%, also if I put my hand in the carb covering must of the intake it starts and revs all the way up please somebody help

⟐ Edited April 19, 2026 at 12:27 MST

I'm experiencing a weird whistle/whine noise when giving throttle on my 09 Yamaha YZF R6.

I just did the valve clearances and never heard this noise before, I reconnected everything the same way I took it off and was sure to triple check I got my timing marks lined back up when reinstalling the cams.

Has anyone experienced this/ have any idea what could be causing this? Main concern is I may have skipped a tooth or something on my timing.

Short video of the noise clearly audible when test riding: ​https://youtu.be/3_altVgHdvI?si=La75g-zG...

⟐ Edited April 18, 2026 at 13:57 MST

⟐ Commented April 02, 2026 at 2:12 MST