BB marine
Well-known member
- Joined
- Feb 1, 2016
- Messages
- 2,905
- Fluid Motion Model
- R-21
- Non-Fluid Motion Model
- Mainship 34 Pilot
- Vessel Name
- PORT-A-GEE
After our Tennessee river trip I noticed an oil leak. There was a small amount of oil laying on the engine stringer. I wiped it up and found that a small drip appeared again. I also noticed some soot marks on the side of the stringer. After some wiping up I noticed that the oil drips were coming from the Turbo outlet connection to the Aftercooler inlet connection. There is a short hose that connects turbo to Aftercooler. Hose clamps hold it and seal the joints. The same with the outlet of the aftercooler to Charge air pipe. Both joints seemed to be leaking. I was surprised that there was enough oil carry over to leak around the hose connections. There is a crankcase ventilation system that has a filter and a drain back to the crankcase to filter oil out of blow by gases and return the oil back to the crankcase. I assume this is to eliminate the oil carry over to the intake. I replace the filter at the recommended 12 months or 200 hours.It was replaced last winter and I put 100hours on the engine this year. Yet enough carry over to actually leak by the hose connections. I tightened the clamps and got approximately 1 turn on each clamp. My question is has anyone else experienced this oil leak and have knowledge of the amount of carry over that is except-able? The performance of the engine hasn't changed and my cruising boost at 3360 is 20 psi max is 28 psi @ 4000. The same as day one! No blue smoke from exhaust. I feel it is normal carry over just clamps the clamps loosened up. Looking for feed back. Thank you.
This is where the oil leak is.
Shortly after wiping up the oil on the stringer another drip of oil fell. This was after shut down. I found a area above this where oil had accumulated. After removing it there was no more oil seen.
This photo shows evidence of were the oil was leaking out around the hose connection
The black soot was more noticeable before I wiped it. It is a sticky black soot that had leaked by the hose connection to the charge air Pipe.
This is where the oil leak is.
Shortly after wiping up the oil on the stringer another drip of oil fell. This was after shut down. I found a area above this where oil had accumulated. After removing it there was no more oil seen.
This photo shows evidence of were the oil was leaking out around the hose connection
The black soot was more noticeable before I wiped it. It is a sticky black soot that had leaked by the hose connection to the charge air Pipe.
