I have a 1986 I/O bayliner with a 130hp 4cyl OMC/VolvoPenta engine. The engine does not idle very well at all all of a sudden. Black smoke is now pluming through the exhaust. I noticed water was not flowing through the exhaust like it usually does but was escaping out the sides of the intermediate housing. Engine temperature was fine. At the same time the tilt motor went out. I believe the lower unit was not completely down allowing water to escape. If this isn't the problem should I be concerned? Is it still safe to run the engine to determine the problem?