450F Starting issues

yz125rider · May 26, 2012

I have a 06 kx450f and when i first start it i have to wait a little while before i can rev or it will die out. This doesn't just happen when its cold. When ive been riding all day even when i go to start it again it will die as soon as i gas so i always have to start it then let it idle for about 2 minutes or so before i can start riding.
The size of my pilot jet is 42 and my main jet is 75. Any help will be appreciated.

Mihylo33 · May 26, 2012

Clean the carb.... twice, then report back.

yz125rider · May 26, 2012

Cleaned the carb already

Mihylo33 · May 26, 2012

Did you clean it twice?

Valves been serviced recently?

yz125rider · May 26, 2012

No I haven't checked the valves recently, I have to check them

bobkyle2 · May 27, 2012

Modern 4 stroke bike.... If its not starting correctly,Check the valves. If there in spec, Clean the carb..... Was never like this before... It was always clean the carb first.

Naturaledge · May 28, 2012

Could be a valves that need to be put back into spec. Otherwise, your carb needs to be cleaned like M33 said. If that doesn't work, make sure you have some Sikk graffix - you'll be golden.

jackson409 · May 28, 2012

I know exactly whats wrong with it :prof:

,,,you're not mixing your oil into your gas :smirk:

Naturaledge · May 28, 2012

jackson409:
I know exactly whats wrong with it ,,,you're not mixing your oil into your gas

there's always some guy that just has to cross the line.... :lol:

Naturaledge · May 28, 2012

Never mind these clowns ^^^^^ did you check your graphics? ....