Hope you'll understand my problem, english is not my first language...
I have no spark on my CRF230F. I bought a new spark plug, a new coil... unplugged the kill switch.. still no spark.
I just rode my bike once this summer. I had somme problem to start it, but I thought it was because it was its first ride after being in the garage during winter.
My brother wanted to take my bike 2-3days after my first ride and it didn't start. He bought a new sparkplug and the bike started well.
I tried to take it for another ride a week after and no spark... since this, we changed the coil, bought new sparkplugs, unplugged the killswitch...still no spark.
Yesterday, I checked the fuse. The "cap" on was a little loose. The fuse was OK. I put the cap back on and... miracle.. Spark!!
This morning, I tried to start my bike again.. no spark...