Fuel injector 450 xc

Hi, Anonymous if your bike has been sitting idle for months or years and you did not do any pre-storage maintenance I feel your pain it will probably have a dead battery and not want to start or if it starts it will idle and run poorly, here are the following steps necessary to complete in order to get your bike back to an acceptable running condition.
1. If your battery was 2-3 years old when you last had the bike running you should replace it.
2. If you believe your battery might still be serviceable remove it from the bike and put it on a 1 or 2 amp trickle charger for 24 hours. If it is the old lead acid type with visible cells and acid levels fill each cell to the top line with distilled water and replace the caps, run the vent tube into a plastic or styrofoam cup, any cells that are cloudy/milky replace the battery.
3. After charging remove the leads and let the battery sit for a couple of hours then check the battery voltage with a volt meter, you should have 12.5 volts or better, any readings in the 11 volt range you need to do a proper load test on the battery and replace as necessary, any readings in the 10 volt range you have a dead cell and replace the battery.
4. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
5. Remove your air cleaner and clean and re-oil per Mfg. specifications.
6. Remove the carburetor, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
7. Remove fuel valve and filter disassemble and clean as necessary, remove fuel lines and replace with new ones.
8. Replace spark plug with a new one and check for spark.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
250 sxf wont idle 250 350 450 505 SX XC 4 Strokes
2012 KTM Fuel Injection Filter Discussion Enduro360 com
http://www.ktmforums.com/forums/two-strokes/5351-help-ktm440-wont-idle.html
https://drive.google.com/file/d/0B2-8B_LViIenQ2xmdkZFUEJiaHc/view

Yes I to have washed a bike to death.You will need to dry the air filter .Is you bike fuel injected?If so take a hair dryer and warm all the connections concearning spark and fuel injection .You should then put dielecric grease on all your connectors.If you bike is carb model then just drain the float bowl.

the fuel pump is most likely seized from setting too long. fuel injectors could be clogged as well.

Try putting fuel injector cleaner along with 93 octane fuel

try some fuel injector cleaner or replace fuel injectors or fuel filter

Remove the fuel injector and inspect for any damage/wear to the o-ring seals. Their also maybe fuel getting past the valve stem seals. All depends on how many hours on the bike and how hard it has been riden,

If your bike ran good previously - and nothing has been changed that would require rejetting or a needle adjustment, I would look for problems elsewhere. Such as:
Has the bike been stored for more than a few months at a time? If so, the carburetor jets could be plugged with fuel varnish. Only being able to start with the choke applied - and an inability to idle are both classic symptoms of this. Remove and disassemble the carburetor. Clean it and the jets out with carb cleaner and compressed air, then reassemble. Also make sure the fuel in the tank is fresh and that the fuel strainer (usually with the fuel petcock) is clean.
There are three ingredients required for combustion: fuel, compression, and a spark (at the right time). So long as you've got each of these - it has got to run.

what a beautiful bike ...the valves need to be checked if you can bump it and it starts and runs Ok then one of the valves is not closing properly Good Luck Ride safe

hi mate its a thing with the fourstroke bikes they are very hard to start when hot they take a load to get going again just keep trying and it should think about it every 4 strokes there will be a spark so .......

hi m8,, first try this, take the handle bar start button switch gear appart,,and clean the starter button terminals that connect wen u push button in,,spray some wd40 inside the switch gear wen u put it back together,,,,,often after off roading ,,connections that the eye cant see corrode wen the bike is washed down,, any probs still ,, shout and il anserw m8,,,,,cheers