Yzf600r won't start

[lakey009]

hiya, i was working on my yzf600r it started and was running fine, but then two hours later i tried to startit and nothing happened then it did a massive back fire.

so i got to work first i charged the battery incase it didn't have a strong enough spark to ignite the fuel and then a weak spark did and caused the backfire. chraged it and still the same problem.

so i moved onto the carbs i cleaned thenout i found that the vacum holes were blocked with grime so cleaned them and everthing else till theywere shiny. put the carbs back on and tryied to start it nothing but the huge backfire was totally gone now so one of the carbs must have been over fueling.

since putting the carbs back on ive checked all the HT leads and wiring but the spark plugs havn't been checked as they were new about 6 months ago/but i could have broken one trying to start it or they could be dirty??.

ive also check the fuel lines and pump and the bike is getting fuel but im not sure how long the fuel has been in the tank for so i think i try and run a small bottle of new fuel first.

little more info on the bike, turns over fast and sounds perfect with one or two little splutters as if it was goning to jump into life

Has anybody had the same problem or do you think im going about solving it correctly? i havn't done much work on bikes before. any help would be great. im just really stuck as to where to go from here.

thanks alot danny p.s sorry if this is in the wrong section.

[lakey009]

hiya, i was working on my yzf600r it started and was running fine, but then two hours later i tried to startit and nothing happened then it did a massive back fire.

so i got to work first i charged the battery incase it didn't have a strong enough spark to ignite the fuel and then a weak spark did and caused the backfire. chraged it and still the same problem.

so i moved onto the carbs i cleaned thenout i found that the vacum holes were blocked with grime so cleaned them and everthing else till theywere shiny. put the carbs back on and tryied to start it nothing but the huge backfire was totally gone now so one of the carbs must have been over fueling.

since putting the carbs back on ive checked all the HT leads and wiring but the spark plugs havn't been checked as they were new about 6 months ago/but i could have broken one trying to start it or they could be dirty??.

ive also check the fuel lines and pump and the bike is getting fuel but im not sure how long the fuel has been in the tank for so i think i try and run a small bottle of new fuel first.

little more info on the bike, turns over fast and sounds perfect with one or two little splutters as if it was goning to jump into life

Has anybody had the same problem or do you think im going about solving it correctly? i havn't done much work on bikes before. any help would be great. im just really stuck as to where to go from here.

thanks alot danny p.s sorry if this is in the wrong section.

FIXED everything is ok turn out after i changed the spark plugs, the fuel, cleaned carbs again which it was the battery all along!!