recently i've noticed that on startup my engine rev's really high (+2000 rpms) and backs down to around 1000 rpms after a few seconds. so i've read that this is normal...ok, then while i'm drive'n and shift back to neutral the engine spikes again and gradually drops back down when i come to a complete stop. it even feels like my engine isn't fully disengage'n when i hit the clutch to down shift, thats when my engine rev's spike. thats not normal. has anyone experienced this before. oh yeah, forgot to mention that for a day or two i rode around with my tank on "e", like past "e". could it be a clogged injector or something?