250 rmz 2005 really hard to start when hot

[rmz250 05]

Bike starts first kick when hot but when ive been riding for a while if I stall it or fall off it is really hard to start bit once cooled is easyer to start.

Starts first kick when cold ****

[Mx-Wall]

Can you use hot-start? Enough coolfluid??

[Dux8]

just making sure but are you using the hot start lever above the clutch?  I never used it myself but never had trouble with starting while hot. 

[rmz250 05]

Yes I use it every time it starts first kick from cold but when warm it doesn't want to fire

[billyandgus]

So you have to use the hot start to start it when it's cold?

[rmz250 05]

I've been told to use it all the time cold and hot

[billyandgus]

Nah I've taken mine off completely.

Do you race the bike?

[rmz250 05]

I don't race the bike I use it for practise days

[billyandgus]

You should only need the hot start when the bike is ridden hard and for long length of time.

I might be wrong but the hot start dumps full in the carb for starting the bike when the bike is red hot. The reason for the dumped fuel is the temp of the bike evaporates the existing fuel in the carb.

[rmz250 05]

Ok cheers, will try without and see how it is.

[418Stroker]

You should only need the hot start when the bike is ridden hard and for long length of time.

I might be wrong but the hot start dumps full in the carb for starting the bike when the bike is red hot. The reason for the dumped fuel is the temp of the bike evaporates the existing fuel in the carb.

Hot start leans the mixture with more air. Leaner mixture required when hot, rich mixture when cold, choke is used.

[rmz250 05]

Bike still takes a good couple of kicks to start when hot without hot start. Someone said putting a smaller pilot jet in would this help. Thanks

[JFM43]

Hard start when hot is classic valves. Check valve lash. possible rebuild top end

[rmz250 05]

Ok thanks

[Dawson]

Try finding TDC and go through halfway down come up and give it a nice hard kick. Should start in 1-6 kicks. With my 05 rmz 250 I hated killing it on the trails cause it took minutes to start. No problems anymore.

[9formula6z]

Check your valve clearance as mentioned above. Mine did the same, don't mess with your carb yet.

[BOLT SPEEDMAN]

I certainly hope the OP has his bike fixed by now!lol