(cbr250rr mc 22) hello, hope you all are having a lovely day as im not. ive missed out on 2 race days and spent weeks figuring out the problem to why my bike isnt starting. first of all when i bought it couple months ago the bike was fine and ran and revved. now after a month it didn't start i tried some starting tips on this forum but nothing helped. over weeks of repairing and replacing and cleaning i decided to replace some stuff that i thought was the problem. my battery was first. helped a lot as the bike starter motor ran quicker but still no fire, i replaced fuel valve and fuel lines. still no problem but i started to smell lots of fuel when attempting to start it. i replaced ignition coils leads and spark plugs. but then the right cylinder started to catch. only the far right cylinder was firing but it wouldnt run. i was out of answers. i even tried starter fluid. so i decided to take it for a service. how much was it? $370 and it worked. brang it home and it was firing well. started up quick and revved. they said vaccum problems and carb needed tuning and balancing and a clean (they did that, thats why it was so much) but it worked. but then next day it didnt. just fired onthat right cylinder again. so i brang it back to the shop. they serviced it again for free. and said another vaccum problem so they replaced the line and made sure it was tight. it fired and worked. next day it didnt fire. im so given up on the bike. ive tried everything. and now it wont fire on any cylinder but sparks and i smell fuel threw exhaust. my last resort is you guys. please help me i will try anything.