I have a 2 cycle Yamaha 150 hp outboard
It was running perfectly . Then out of the blue it started running rough.
So I pulled the spark plugs and they were oily... so I bought new ones and installed them.
I still have the same issue... so...
I checked the gas fuel filter on the motor and it was clear.
I checked the diaphragm on the fuel pump... looked fine.
Is there any type of diagnostic test I could perform?
Help me please.
It was running perfectly . Then out of the blue it started running rough.
So I pulled the spark plugs and they were oily... so I bought new ones and installed them.
I still have the same issue... so...
I checked the gas fuel filter on the motor and it was clear.
I checked the diaphragm on the fuel pump... looked fine.
Is there any type of diagnostic test I could perform?
Help me please.
Last edited: