williamwallus
New member
Ok, I have a mercury 115 year 1998 it starts then dies
So far here is what I have done.
New Fuel pump
New fuel lines
New spark Plugs
Checked compression
Its very strange. We can get it running when pumping the fuel primer ball but it smokes ALOT.
It can't be the fuel as this is a dual motor setup and the other engine runs Perfect. Could it be the carbs? Another thing I did in the process was I disconnected the oil pressure regulator. Does it use this for fuel delivery? It runs off the 2nd line in the gas line. The reason I did this is there was a hole there so I just cut the line and put a splice in there, then kinked the oil pressure line.
The problem started at random, ran great the day before took a 5 hour offshore trip. Originally I had thought the fuel pump went bad and it fouled the plugs. When replacing the older line started to break apart so I replaced the main intake line.
So far here is what I have done.
New Fuel pump
New fuel lines
New spark Plugs
Checked compression
Its very strange. We can get it running when pumping the fuel primer ball but it smokes ALOT.
It can't be the fuel as this is a dual motor setup and the other engine runs Perfect. Could it be the carbs? Another thing I did in the process was I disconnected the oil pressure regulator. Does it use this for fuel delivery? It runs off the 2nd line in the gas line. The reason I did this is there was a hole there so I just cut the line and put a splice in there, then kinked the oil pressure line.
The problem started at random, ran great the day before took a 5 hour offshore trip. Originally I had thought the fuel pump went bad and it fouled the plugs. When replacing the older line started to break apart so I replaced the main intake line.