Diesel Pusher
New member
Seems to be getting too much oil, fouls out plugs on start up. Once you get going faster, it seems to run okay, but seems to use more oil than it should. Oil pump is located under fuel pump on port side. Small line coming from oil pump to fuel line has brass fitting connected to fuel line. Is there an adjustment on the oil pump (I couldn't see one) or could a defective fitting or defective oil pump be letting too much oil pass through? It is a 2003 90 h.p. Mercury with oil injection. Thanks for any help!