Originally Posted by tenderfoot57

O.K. here's the question for ya all. I have a NSR 12 that I have modded the crank and sleeve. The engine ran fine last season and I went to fire it up today and had a strange experience. The engine will sit there and idle, as soon as I give it any throttle it starts to run backwards, it will idle like this for a few seconds then I give it gas again and it stalls. Whats the deal? The only difference from last year to this is the type of fuel that I am running.
Thank in advance for your thoughts.
TF