I have a 2007 20HP Merc 4 stroke. The motor only has about 25 hours on it. I have an intermitent problem. I know the oil pressure warning light is supposed to come on at start and go out after about 10 seconds if everything is OK. At times at a cold start the light will stay on and the motor runs rough. If I shut it down and restart the motor everything is back to normal. The oil level is withinn spec.
