Had 08 183 in last week for new impellor, plugs, lower unit oil, and water-separating filter. Took out for first time today. Started fine and no problems with idleing. Water came out the pee hole. However, water pressure alarm went off and shut down to safe mode whenever on plane. Tried that 3 times. Also, notice no reading on water pressure gauge. Took to my dealer and he said has good water pressure and found 2 slight overheats on comuter. Left with him to give closer look last week. Will appreciate any thoughts regarding what may be happening. Perhaps the gauge is bad? Thanks.