First time poster here.
I have a 2010 Kawasaki Ninja 250 - this is a bit of a story and I try and keep it short.
A couple weeks ago my bike was having trouble - when I would rev the engine in low speed the engine would start to cut off. I thought this had something to do with my carb since something similar caused issues a few years back. I kept on reving the engine and eventually I was able to get up to higher speeds without the engine cutting off.
During my next ride to work it was running fine. Then when leaving work it would not start, I would turn the key and nothing was to happen (just a single tiny click of everything turning off). First I thought it was the battery (I checked that by beeping the horn - which sounded great). My friend help me push start the bike and we got it on and going about 3 mile/hr at about 1 RPM (I think) anything above that there would be a really loud bang noise. Also the RPM pin was upside down and below the 15 RPM (it was just jumping around in full circles).
I heard it might be the battery causing the issues so I took the battery out to charge it over night before trying the bike again. I set the battery back in the bike and tried it again - nothing. But I also noticed the battery boiling/bubbling a little. I looked it up and I might have destroyed it but also might not have (I have yet to test it and see if I need a new one).
There aren't really any motorcycle sport bike repair shops near me. I need some guidance and help on diagnosing and fixing my bike. I have the Owners Manual, and Haynes Motorcycle Service Manual. I'm honestly not sure how to even figure out what is wrong with my bike.
Any help would be really appreciated.