I have a 2007 Volvo Penta 5.0L GL. It noticed the other day that it was running about 150 degrees when cruising along at 2800 to 3200 RPM's. When I get it up to full throttle the temp is rising to about 195 or 200. Then when I let off the temp takes a couple seconds and comes back down.
Could there be some blockage in the cooling system. or could it be an air leak somewhere?
Could there be some blockage in the cooling system. or could it be an air leak somewhere?