SRX250 won't start

[Ixion]

Only if the exhaust valves are too tight.

[jleahy23]

thanks for that mate,
i replaced the air filter and it seems to have fixed it.
i've noticed if i dont leave the choke on long enough it stutters and farts when its off... but im guessing thats semi-normal..

[wired00]

OK Guys,
I took it apart, and there was a bit of rubber in the float valve preventing it from closing properly. I cleaned it out and put it all back on.

Guess what - IT STARTS!

Now, tuning...lol.

When its running, warm and no choke it kinda pulses, as in it'll sit around 1500-2000rpm for a while then go up to 3-4000 revs, then back down.

Any Ideas?

nice i was scrolling through the thread about to suggest double check the floats. You mentioned back in the thread there was no fuel in the float chamber really the only explaination is that the float is jamming closed and not allowing fuel to fill in when you have the tank on PRI Anyway glad you fixed that part

With the uneven revs maybe check these :

1\ check over the pilot fuel and air jet again(!) Make absolutely sure its clean. It could be the pilot is blocked and not letting correct air or fuel through when idling

2\ Check any holes going into the float chamber are clear and that the float mechanism isn't sticking. This would cause uneven flow of fuel when idling. If the vacuum port is blocked it might cause uneven fuel flow because not enough vacuum is created to suck fuel up into the venturi

just my 2 cents

Edit: Oops you've already solved with air filter. nice