Originally Posted by
hookem34
I recetly replaced the stock bearings with some Boca ceramics. Now my tune has changed. Won't hold an idle as well and tends to flame out from time to time. Haven't had much time to play with it but was just curious if this has happened to anyone else.
FYI...the engine ran perfectly prior to the bearing change. Just wanted to add the ceramics for the hell of it.
Could be a bad bearing. Pull the crank out and press hard against the inner race of the rear bearing with your thumb and rotate, see if you feel anything gritty or notchy. If so the bearing is bad. Also make sure the bearing is seated properly and is properly aligned.