- Mar 22, 2008
- roane county
got a 15 hp 2001 mercury 2 stroke and put a new water pump kit in it. bought complete new housing and all. now when I run it it pees extremely hard then slows way off then pees very hard again. a definite rythym. took it back apart then reassembled and same thing. any ideas on whats up?..................................... after some research, this motor has a thermostat?? just like a car! after pulling it apart twice, checking impeller , seals etc, replaced thermostat and all good. live and learn. only worked on older outboards. had no idea newer outboards had thermostats. urban hunter you were on it! and buccaneer and double brow tine. thanks for the help!