My KLX 250S H6Fstarts and runs great above 50 degrees, but once the temperature drops below 50degrees it won't start. I grind and grindand iteither doesn't start or the battery runs dead. Any fixes?

Thanks.

 

Plug?
Oil temp to high?
I live in Hawaii so I'm pretty useless

 

I found if I drain my carb if it's to sit for a few day and the temp drops it starts easier,just something I learned with my TTR and it works

 

you could try running a hotter spark plug. whenever this happens i usually just spray the plug with a little starter fluid. don't spray any right in the cylinder. a little on the plug should do it. it does for me.

 

pull out the choke very slowly when starting, works everytime for me.

 

One way of preventing that is to shut off fuel and let'er run until the carb bowl is empty. Just remember to turn off the ignition once you hear the enging die....and the turn on the petcock when you start'er up again. Getting a fresh charge of fuel from the tank seems to do the trick. I'm assuming this happens after letting it set all night with fuel in the carb bowl.

 

Is your bike stock at the moment? Pull the plug on the idle mixture screw and try 2-2.5 turns out. Drain the carb after each ride like many do. One step hotter plug should help as well. I have two bikes up country that I do this with, both with electric start and richened idle circuits, and they fire up in below zero weather in the winter months no problem.

 

Well first of all Gary, welcome to the site, if you want to you can post in the new member and tell us about yourself. If not that's OK too. Here is a link that I wrote quite a while back, and it has worked flawlessly everytime. Its not something I knew about before getting my bike nearly 2 years ago. Its a lot of interesting reading if you have the time. I will also copy and paste in the procedure. Later man.

https://www.kawasakiforums.com/m_96672/tm.htm

Shut down procedure.

1. After riding as you are pulling into your driveway, or to speed things up you can do this a block from your house, turn off the gas.
2. Let the bike run until it actually dies from gas starvation, (this may take 2-5 minutes) But that's ok it will give you time to put away your gear.
3. Park it and now you're ready for the next time you ride whether that be in a day, or a month.

Start up procedure.

1. Turn on the gas
2. Wait for 10 seconds
3. Start the bike as you always do

Now I know some of you are asking why not just drain the bowl and then you can start the bike. Well there are two reasons. It it harder to drain the bowl by hand than to let the bike do this as it runs out of gas, and by running the gas out using the motor, it assures that all of the small areas that would otherwise still have this junk they call fuel will be empty, ready for fresh, (fresher) gas to get in and do its job. Now all of that being said, I came up to work yesterday to let my son ride the moped up on the lawn and I cranked on the bike for a few minutes, and then I thought I wonder if I can drain the bowl and do the "after thought" procedure to get this thing going? Well I drained the bowl, turned the gas back on and two kicks and it was running. Keep in mind that the moped is a two stroke, and it has been sitting up at work in a mechanical room for about 2 months. So either way, whether running the gas out using the motor so you are ready to go next time (which I think is faster and more efficient) or you drain the bowl using the screw at the bottom of the carb, the results are the same, you get your bike started.

And I even guess some people would say that this is a hassle, but I gotta tell you that cranking on a bike for 5 minutes off and on only to run the battery down and still have not started the bike is way more of a hassle than a little time taken to get ready for the next ride. This last summer I rode my bike everyday for about 3 months, and it always started right up, but there are a couple of reasons. one it was warmer out, cold weather affects fuels in a negative way, and more importantly by riding the bike everyday I had gas in the bowl that didn't have enough time to "change". Next summer I will probably go back to leaving the gas on and not draining the bowl. but on the wife's bike the procedure will always be to run it out of gas since she doesn't ride as often as I do.