My new to me O'Day 322 has a Yanmar 2GM20F aux.
While bringing her home late last season across Lake Michigan, the engine alarm went off after motoring for about 1/2 hour in rough seas.
I throttled back some, and while considering options to return back to harbor, the alarm stopped, and I was able to motor at a lower RPM for several hours. Once in port, I found the antifreeze to be very low. I filled it with water, and motored 10 hours the next day at full RPM. I drained the water and filled it with fresh antifreeze at haul out.
While checking on the boat recently (on the hard, not run since I filled up the antifreeze), I found the antifreeze level down again.
Nothing in the bilge, and can't see any leaks.
What should I be checking? Seems odd that the level would be down, with no antifreeze in the bilge and the engine has not been fired up.
Greg
While bringing her home late last season across Lake Michigan, the engine alarm went off after motoring for about 1/2 hour in rough seas.
I throttled back some, and while considering options to return back to harbor, the alarm stopped, and I was able to motor at a lower RPM for several hours. Once in port, I found the antifreeze to be very low. I filled it with water, and motored 10 hours the next day at full RPM. I drained the water and filled it with fresh antifreeze at haul out.
While checking on the boat recently (on the hard, not run since I filled up the antifreeze), I found the antifreeze level down again.
Nothing in the bilge, and can't see any leaks.
What should I be checking? Seems odd that the level would be down, with no antifreeze in the bilge and the engine has not been fired up.
Greg