starting problems?

[kawi_rider_97]

I usually run 93 octane in my quad but all i had available was 87 and it doesn't want to start with it, is the low octane the reason its hard to start?

[bellzbub]

no the fuel octane will not matter. you have another problem. maybe clean the carb or check your valves, battery, electrical. there are to many options to help without more details.

[kawi_rider_97]

well I know its gettin spark, and the battery does suck but works when i use a battery charger, so im pretty sure its not the electrical. the spark plug looks perfect tan in the middle no carbon on it so i think my jetting is decent. when i ride it or rev it up, it backfires. I have a 12:1 piston with the 440 so thats why i thought it might be the octane

[RATPACK Z400]

Your jetting is off.need to rejet.Forgot to ask did you do any mods to it like pipe,revbox,filter,etc and how long has it been doing this?

[bellzbub]

get a new battery. the elec. system needs a working battery to run and start right. working on a charger is not enough.