its a zxr400 l 95' plate. recently i have noticed that there is a flat spot on the throttle and when hit i got to rev through it or the engine dies! theres a build of gases and pops and bangs and also flames out the exhaust! riding home two nights ago from work it died and stopped. was ticking over and trying to start but wont ! pushed it home 3 bloody miles ! and tried jumping off the car battery and did start off the battery from the cvar a coulpe of times but now wont. put it on charge in garage and will tick over but wont start
gota full tank of petrol... any suggestions ? i know to look at the tension coils, carbs, CDI ? but how do i check these?
any advice would be greatly appreciated

ta ZXRARCHER92