Plagued by overheating at higher RPM's on port engine (some heat buildup on stbd too.) Did usual: new thermostats, new water pumps, rebuilt pressure relief valve - no real help. Engine rigging unchanged since installed in 1995.<br />Have seen internal corrosion at top of lower unit between water...
Plagued by overheating at higher RPM's on port engine (some heat buildup on stbd too.) Did usual: new thermostats, new water pumps, rebuilt pressure relief valve - no real help. Engine rigging unchanged since installed in 1995.<br />Have seen internal corrosion at top of lower unit between water...
Engines(twins)both show temp normal at idle to 3000 rpm. Engines overheat at rpm 3000 and over. Port worse than starbd. Usually takes 5-10 min. Changed impellers, thermostats, waterpump. Considering replacing water deflectors in cylinder head or removing powerhead entirely to check for carbon...
