Last fall i bought a 98 ranger with a 150 efi.This spring i had a new water pump put in.On a recent trip to the st.lawrence river,one of the people in our fishing party said that it is taking about 15 seconds for the water to come out the peehole.Another boat in our group has the 115 and his takes at least 30 seconds for the water to exit.Is this normal operation for these motors or should i have asked the shop to replace the thermostats and poppit valves? Should these be replaced everytime you change the waterpump- every two years? This is my first mercury motor.<br />Thanks for any info!