I have a 2001 Mercury 150 Saltwater Series bought brand new in 2001. My 2nd Merc motor( 1st was a 125 1997 model) and never a problem with either until now. I've changed plugs (replaced w. factory original NGKs as recommended), changed oil in foot regularly,etc. I've noticed that in rough water or when pulling the kids in tube back and forth that the oil warning signal comes on and will stay on. Checked to see if water is flowing out of motor and it's a constant hard steady stream, checked the oil tank caps and they're tight. So...I tried this test. Filled the exterior reservoir to the top, took off the cowl, checked the interior tank and it was full.<br />Hooked up the hose and ran the motor for 20-30 minutes. Checked the exterior oil tank and yes, it was lower. so...At least I know that the oil injection system is working. Still I'm at loss<br />at why the oil warning beep stays on constantly when in rough water or pulling the kids on the tube... Any help would be appreciated...
