[ab_714]

Hello all, I am having an issue with starting my 2006 CRF250R. It started first kick in October when I put it up for the winter; fast forward to this weekend and no start. I drained the fuel from the carb and tank in October after my last ride. It has a fresh air filter and I put a new spark plug in this weekend. Also I reshimmed the valves back to spec as the exhaust were a little out(~.002), intake was good. So I got brand new fuel, cleaned out the jets, air filter is also brand new. Bike won't kick start, it tried a time or two but wouldn't fire. Only thing I can think of is maybe it's getting a weak spark even though the plug is brand new. Any suggestions on where to start looking or other thoughts as too what it could be? Thanks in advance.

[JimDirt]

Check this first , make sure that the power wire is attached to the coil , sometimes when pulling the tank , the wire can get pulled off the connection by the fuel valve as it goes by , and it catches the power wire , it may look attached , and just be sitting there , or it can be completely off , no power to the coil , no spark , no start , or some power as its sitting there , but in the effort of kicking it , it breaks the connection , so it will try , but not run

Also , have you determined that your actually getting fuel to the plug ???

Turn your fuel valve on long enough so you know the carb is full , then remove the tank , then try to start the bike how you normally do , then pull the plug , it should have some gas wetness , if its completely dry , then your not getting fuel thru the carb , dip the tip of the plug in some gas , then re-install it and try to start it , if it tries to start or does for a brief minute , then fuel , or rather the lack of fuel is the issue , then check AP squirt , make sure it gives a good squirt , and just misses the slide , if squirt is good then your back to jets , or a internal blockage , or maybe even the float , or the needle/seat for the float stuck and not enough fuel in the bowl to be picked up , if the bowl has a drain screw on the bottom (flat screw facing left side at bottom of bowl just to the rear of the large nut at bottom) , loosen it and see if fuel comes out the drain tube , and see if fuel comes out for more than just a few seconds , or loosen the large nut at the bottom (don't completely remove it) and see if gas leaks out (put a rag under it to absorb the gas) , again , see if just a little , or a lot of gas comes out , if it looks to be enough to fill the bowl , then its not the issue

The bike needs Air , Fuel and Spark to run , so its one of those 3

[Aussiecrf230]

Jim,
it also needs compression or the fuel air mixture won't go bang, but without the first three you go nowhere.

[JimDirt]

Yes that's true , I was just focusing on what he had described which seemed to be a spark or fuel issue , since everything "seemed" to be described as working properly prior to sitting for the winter , so the obvious would be fuel/air , then spark , and since he said he adjusted valves , i would guess he would have some compression

But otherwise , you are correct !!

[ab_714]

It started first kick every time last year, that's what is confusing to me. Actually JimDirt you helped me last year when I had the bad gas issue after I put a new piston and cylinder on. I pulled the plug after trying to start and it had a wet look to it, not completely soaked but a wet look. And I get plenty of fuel out of the carb drain so I would assume that its it a fuel issue, that's why I started focusing on the electrical side. I will check out the coil power wire and see what I find there. I have also read about the wires in the spark plug boot coming loose from taking it on and off? May as well check that out while I have the tank off.
Thanks for the responses guys I appreciate the help and knowledge!

[JimDirt]

No problem , just keep us updated on your findings