Cummins Marine Diesel Repower Specialists › Forums › General Discussion › New Diesel Engine owner (sorry, it's a yanmar) › Reply To: New Diesel Engine owner (sorry, it's a yanmar)
Tony Athens
Engines: QSB 6.7 550 HP
Location: Oxnard, CA
Country: USA
Gary,
Listen to both Mike & Rob– A good test ( not the fix for seawater restriction) is to run the engine at the dock at idle to 1000 RPM and squeeze all the hoses ( get a good feel for them)……………Bring the engine up to 2700-3200 RPM and squeeze again.. You’ll “see” what they are talking about as with this very complex seawater circuit, inner clogging of the seawater side components is very real on this engine. Bursting a “hose” is usually the sign.
Sometimes a fix like described on the RYDLYME web site will buy some time, but nothing replaces R&R-ing the components and doing them on the bench.
Tony