thats one thing my bike has done, always started up... and a few days ago. it was in the teens and it started right up....

 

Try turning off the fuel and letting it run out of gas. This will keep your bowl dry for the next start.

 

Someone told me this once: If you start your bike in the cold and don't let it run up to temp all you are doing is sucking in the water the has condensed in the gas tank.

 

If you keep the tank full, there should be little room for condensation.

 

I had gone 10 days without starting it.

It started right up, no extra cranking.

Of course, I have a #40 pilot jet in place, the rest of the carb mods and an HMF pipe.

 

Marty:
I thoiuhgt you had a new carb?

 

You're very correct. That should have been "when I HAD" instead of when I HAVE.

Sorry about the mix up.

However, with the pumper, all you do is open the throttle and a shot of raw gas gets shot into the intake tract.

Starts up really easy now!

 

I've been watching this issue and thought I'd post my observations...
I also experience hard starting after the bike sits... It happens in warm weather too, but worse in cold.
(My bikes never sit more than 2 weeks without me starting them).

I've noticed that with a certain technique, the bikes seem to start easier (my KLX250S and my wife's KL250 Sherpa - both 2006).
Here's my magic technique:

1) Enable the choke
2) Don't touch the throttle
3) Crank starter for 4 or 5 seconds
4) Stop and wait for 6 or 7 seconds
5) Crank starter for 3 seconds and twist the throttle just a hair
6) If no start, stop and wait for 4 seconds
7) Crank for another 5 seconds while giving just a hair more throttle

That's it. It usually does the trick. Just started them yesterday, and even though the batteries seemed to be a touch on the slow side (cranking the motor), they started with the above technique. Wadda ya think? Just lucky? Better Canadian gas? Magic fingers?

My 2c.

 

now that sounds like the instructions i follow for the harley! lol

 

I've had the best results with not opening the choke fully. I pull it out to just before where it locks in position and within the first few revs it will at least fire, might not run but it does pop. Couple times of running the choke **** in and out slowly while cranking and it will start up. Keeping it running when its 30 degrees is another task I've yet to accomplish, I had it die out twice on me while riding around the yard running the STABIL through the system. It died after probably 10 minutes of running and again a few minutes later. But I only had like 3/4 tank of fuel and topped it off to mix in the STABIL so there may have been some condensation that got mixed in.