I've had numerous fa50and fz50s never ever had a problem with the oil pump! I really don't understand why some guys have an issue with it. All of mine ripped! Even had 1 that I ported the shit out of had boost ports shaved the deck and head , 3 or 4 base gaskets so the exhaust port is uncovered, that thing did 47mph. Still had the oil injection. My question is did this bike by any chance come from Iowa? Iowa bike only have 2 transfer ports not 3 and have a top speed of 20mph.