check nyo muna PCV nyo... yugn excess gasses sa chamber dapat meh escape route, its the PCV valve job. if its block you will really pump smoke and oil out of all cavities..







baka kasi na-corrode na yung rubber hose at grommet nang PCV mu..

when all is checked ika nga, dapat mag pa compression test ka na... why will you do an overhaul on mere SUSPICION..

you have to be sure that your cylinders are not performing, the only way to find out is do a compression test.. ask around your local shops and engine rebuilders where the nearest shop that has compression test. im pretty sure there will be one near your place..