[k5blaser88]

i have cleaned the carbs change the waranty part on the bike and but a new ignition coil on it. it wont start unless i put gas on the air filter then it will start up then shut off. if i crank on it nothing happens. what do i need to do or not to do. please help me

 

[8v-of-fury]

when you are cranking it.. smell the exhaust.. does it smell like gas?

If not i would suspect fuel pump. If it will only start when you manually give it gas, then die when it has burned it all.. its not giving itself fuel.

check and see if it smells like gas.. and what does it sound like? trying to start? you changed the coil, so we have spark, and we know we have air.. only thing left in the equation is fuel.

The triangle of a combustion engine lol, Oxygen, Fuel and Spark

 

[saber6]

Could be the fuel filter also..

 

[Dirtyone55]

Does it run with the choke on? The only reason I ask is because one time my machine backfired on me, and I am guessing that is what blew the tubing off that the air/fuel mixture goes through so it was drawing tons of air, and would only run with the choke on. Probably not it, but worth a try to eliminate the easy and free fixes first.