Hey, ive got an 2011 rmx 450 with no spark!
The bike started and ran sweet for 20 mins until mid berm it died and i had nothing?
Any ideas as all the EFI buisness is new to me.
Cheers

Look up Ohm's law which is V=I X R. The first thing everyone needs to do is check power and ground. Make sure you have power and your grounds are clean and tight. Then make sure all of your other electrical connections are clean and tight. Check your fuses if you have any. Assuming you pulled the plug and checked for spark, try a different plug and plug cap to see if that's it. You can take a test light and see if your getting any signal to the coil and if you're not check to make sure you're getting power to the ignition and get a wiring diagram and make sure the crank sensor is sending a signal to the ignition module. you will need an ohm meter to tell you this. A trouble shooting manual is a good idea. More likely than not, it has lost a signal somewhere or a component has failed. Modern electronics are pretty reliable and it's usualy a connection problem of some kind that causes the problem. Hope this helps.
Good Luck.

S.

Edited by vidarapido, 06 May 2012 - 05:47 AM.

Thanks for the reply vidarapido,
during the week i swapped the coil with a friends RMX, checked all fuses and grounds
and nothings changed.
When checking the connections i pulled the plug on the injector and it broke on the injector side of the connection just bellow the actual plug,if that made sense ? it looks like its been cracked for some time and ive finished it off when pulling the plug could this stop the spark? before i pay the $280 AUS dollars for the new one is there anyway to check and see if the injector is working when pieced back together?
i can still get one spark wen i first kick it over and thats it!

Thanks

you may have a faulty kill switch

you need to test the stator