Fighterpilot
Senior Member
- Joined
- Apr 17, 2011
- Messages
- 380
3208N and MG 502. Returning home from fishing trip*stopped to check out oyster bed. Upon accel. to continue, some slipage in the drive train on the port engine. Surge at accel. seemed normal, than there was a release than in a few seconds, 2 or 3 surge again than release. It was repeatable and we determined about 1500 rpm all we could do. Checked oil dip stick when we got home. Oil very clear, in fact so clear hard to tell where it was on the dip stick, but it was 3 or 4 inches up the stick, instead of inch or so to full mark. Compared to the other tx. reading to confirm what I was seeing. No discoloration or burnt odor, foam or frothing.
Just acquired the boat so don't know what PO used for oil, or any history of repair, if any, on this unit. We have about 6 hours on the boat with the last hour being at 2400 RPM. It did have newer hyd. hoses to heat exchanger which suggests *some event.
I have the original manual that came with the boat and tx. when boat was new. No pressure gage on the unit since that port is used for heat exchanger connection. Book calls for T is want to use gage.
New props were put on by the yard when we hauled for survey. Could that prop have "thrown or sheared" the key. Maybe key wasn't used??
Coupler appears normal.
As a start will drain the oil and add fresh, appropriate oil as called for by the book, and pay attention to how much is being added.
Book says there is a strainer. Will try to check that, but doubt it is clogged since oil is so clear on the stick.
I guess I could get a diver on scene to check the prop.
Any other suggestions would be appreciated. Thanks
Just acquired the boat so don't know what PO used for oil, or any history of repair, if any, on this unit. We have about 6 hours on the boat with the last hour being at 2400 RPM. It did have newer hyd. hoses to heat exchanger which suggests *some event.
I have the original manual that came with the boat and tx. when boat was new. No pressure gage on the unit since that port is used for heat exchanger connection. Book calls for T is want to use gage.
New props were put on by the yard when we hauled for survey. Could that prop have "thrown or sheared" the key. Maybe key wasn't used??
Coupler appears normal.
As a start will drain the oil and add fresh, appropriate oil as called for by the book, and pay attention to how much is being added.
Book says there is a strainer. Will try to check that, but doubt it is clogged since oil is so clear on the stick.
I guess I could get a diver on scene to check the prop.
Any other suggestions would be appreciated. Thanks