OK here is my problem. Fully built motor.(has been run in 6 months) I was having boost leaks so i blocked off the inlet to the turbo, oppened the throttle body and hooked a bicycle pump to one of the vacuum lines. Im not holding more than 5-6 lbs. i think im leaking at the t/b or manifold. So here is my question. im building up pressure in the crankcase. This doesnt seem right. do i need to have the motor at tdc? to avoid valve overlap? that shouldnt matter... am i leeking at the rings? they havent seem oil in a while... built the motor last year 1000k break-in and stored for winter. any ideas?