1989 omc king cobra 2.3 ford.replaced impeller new problem. at idle everything is fine. while running full throttle both gauges peg. idle down everything returns to normal. yesterday developed a clunking, oil pressure to 10 after idling everything retuned to normal. i'm new to boating but have rebuilt an engine.impeller may have been improperly installed. should it be installed with a turning action hope i didn't fry anything thanks for any information oryals
