GfromLT

I played around with the bike today trying different scenarios. What I noticed was: - When cold bike starts up okay-ish with choke half-way pulled. Giving throttle makes engine go VROOOOM. - putting it in gear, without releasing the clutch, makes RPM go down 1.5-2k (wtf?) - Idle rpm isnt stable (when fired up with choke, 3k rpm, going up and down +-300rpm. - I left it to idle for as long as it could. While engine is hot, it doesnt wannt to start even with choke, If it does start, rpm rises to ~4k because of how much choke is pulled and then start falling, falling, and stalls in like 2 minutes of total idling -While RPM is falling, twisting throttle kills the engine. https://www.youtube.com/watch?v=fpa-yIf46hg Tried to push bike in different gears, there is some free play, but gears are there. Engine knockin indeed is clutch rattle. Didnt find anything metal in engine oil. At this point it has to be the fueling?

I could do that, just today I bought 4L of motul 5100 and oil filter, however the bike is starting and it runs (with allmost full choke) and gears seems to be fine, so I doubt there would be any pieces, but cant know for sure until drained.

I assume you mean "They arent..." Thats a great advice with the screwdriver, I will try that. It is driving me nuts, could be simple clutch rattle, could be engine bearing failure

Hello, Im new rider and Ive just recently bought 98' yamaha xj600s diversion. Motorcycle was okay-ish condition, but Ive done something incredibly newbish and stupid. So what happend you ask? I was gooning down the road at 120kmh (70 mph, roughly), a stack of cars far head was visible, so I started braking, but didnt notice my braking wasnt doing much and I lost sence of speed, so at roughly that speed I shifted into 3rd gear (couldve been 2nd gear, cant tell anymore) dumping the clutch, bike made strange sounds, engine stalled and I rolled to a stop. When stopped I couldnt start the bike, for sure I thought it was done. I pushed it back to the garage and left it be. After few hours and pulling the choke all the way, bike started, but now I THINK it is making a ratling/knocking sound at low rpm that wasnt there before. Got some videos: Just after buying the bike, before screwing it up: How it is now starting without choke when WARM: I really dont like the sounds its making when rpm is ~1k. Here how its working COLD-ish: I check all 4 exhaust headers they were hot, so the cyllinders are firing. Plugs are not lose, I didnt remove them tho. From common knowledge, to me the knocking sound at ~1k rpm sound like camshaft, crackshaft or pistons or something in between vibrating the way they shouldnt. Tell me straight doc, how bad is it?