LastSerio87
CB750 New member
I have a '78 CB750 and I can't seem to figure out why once the bike gets hot it pours oil out the left rear case cover which houses the shifting mechanism and oil pump. Originally I thought the gasket was to blame, so I used black rtv oil gasket create-a-seal. That worked for just couple rides, as i was trying to adjust carb issues, then it started to pour out again... I thought maybe the housing was warped. I have a second parts engine (one with a blown cylinder due to a previous owner) so I switch housing and used a new gasket i bought off of cb750.com. It ran for about 10 min and i rode it around a parking lot, then it started leaking again. It leaks at the bottom and through the left side screws. Any suggestion and help would be greatly appreciated.