Oil injection pump on a 150 proV yamaha engine?

Question

Does the pump have oil pressure or does it work by vaccum,

becuase when I check my spark plugs the right side are more fouled than the left side

Answer 1

Does this engine have oil injection at the carbueretors?  Two stroke engines mostly have oil injection at the carbueretors and an associated adjusment to limit the oil induction.

Answer 2

and i would disconnect the oil injection system on that engine...( you will just have to replace the fuel pump )we did!!  i had the 200hp and we just mixed the gas and oil together... no second guessing that way and we were never worried if our engine was getting adequate oil.... ( ours was an 89 year model )