Capt.Will
Active Member
- Aug 15, 2016
- 148
- Boat Info
- 1997 Sea Ray 330 Sundancer
- Engines
- 7.4 MPI Mercruiser Inboards
Engine: 1997 7.4L Mercury Bluewater MPI - Closed Cooled
Issue: Port engine just seems to have a bit more steam exiting exhaust than the Starboard engine (on plane and at idle speed). It doesn't really overheat according to the temp gauge, however compared to the Starboard engine it does reach 170 degrees much faster upon a cold start.
When I come down off plane the Port engine does reach about 175-178 degrees for a few minutes then gradually backs down to 170 degrees.
Recent actions: Changed the Seawater pump housing/impeller with new kit. Made sure no debris was in the hose from pump to the Transmission cooler. Sea Strainer is clear as well.
Question: Could there be blockage in the Heat Exchanger or possibly a pocket within the exhaust manifolds? What are some possible reasons for this according to these symptoms? Are there any commons issues that happen with Heat Exchangers?
Issue: Port engine just seems to have a bit more steam exiting exhaust than the Starboard engine (on plane and at idle speed). It doesn't really overheat according to the temp gauge, however compared to the Starboard engine it does reach 170 degrees much faster upon a cold start.
When I come down off plane the Port engine does reach about 175-178 degrees for a few minutes then gradually backs down to 170 degrees.
Recent actions: Changed the Seawater pump housing/impeller with new kit. Made sure no debris was in the hose from pump to the Transmission cooler. Sea Strainer is clear as well.
Question: Could there be blockage in the Heat Exchanger or possibly a pocket within the exhaust manifolds? What are some possible reasons for this according to these symptoms? Are there any commons issues that happen with Heat Exchangers?