did you notice any reduction on your oil level lately? if so, you may really have to make a top overhaul, mahirap yung sungkit lang, baka you need to change the piston rings already narin, baka worn out na rings mo kaya umaakyat na oil sa combustion chamber pagikot ng makina. also, if you notice excessive white smoke coming out of your tail pipe hanbang takbo makina mo, am sorry to say but you really need to open up your motor.

i had same problem a month ago, naayos ko na. replace ako valve seals and rings. ok n sya ngayun. i spend around 6,500.00.

if non of the oil reduction and smoke ever exists in your motor, you may just have to change your plugs, baka mahina n sya sumunog. oil do reach the combustion chamber but in little amounts only, thats lubrication, yun ang trabaho ng oil ring, but in excess, problema na.

hope nakatulong kami syo bro.