lkrompier
Member
I have a 2001 400 Sedan Bridge with 3126 Cat Diesels with 630 hours. My port motor has been running hot around 195-200 under load at 2400 rpm cruise and comes right down to 185 at lower speeds. The starboard motor max's out at 185 which is normal. Although you can smell antifreeze, (I think from the engine getting hot) the antifreeze level is good and I can find no leaks (oil is not cloudy either), the strainer is clean, I changed the impellers last week and flushed the heat exchanger with a hose on the intake side and dislodged some rubber from old impeller(s). Could the heat exchanger still be somewhat clogged? It doesn't look like the end of the heat exchanger is designed to come off for proper cleaning with the (6) bolts holding the end cover on. Does it? I have not flushed the after cooler yet. Could it be a thermostat? I'm running out of ideas. Anyone have this problem before or have suggestions on how to bring this temp down to normal? HELP.....
Thanks,
Larry
Thanks,
Larry