1993_yamaha_stern_130
Member
"Hi all you expert marine engi
"Hi all you expert marine engine folks (how is that for high expectations?)
I recently purchased a 1993 GM 181ci/3.0L 4cyl I/O with a Yamaha stern drive in my Godfrey Hurricane Deck Boat. I also have water getting into my crankcase oil.
It was quite a bit of water - about 1qt. The prior owner did not seem to be aware of this problem.
I noticed that the stern drive of this boat rides very low in the water when not moving. Nearly the entire lower unit is submerged. Could it be that the water is backing up through the exhaust manifold elbow ?
I can not visually see any cracks/corrosion in the block, exhaust manifold or the engine head. I removed both today.
What do you guys think ? Where does the water usually get in ?
Thanks"
"Hi all you expert marine engine folks (how is that for high expectations?)
I recently purchased a 1993 GM 181ci/3.0L 4cyl I/O with a Yamaha stern drive in my Godfrey Hurricane Deck Boat. I also have water getting into my crankcase oil.
It was quite a bit of water - about 1qt. The prior owner did not seem to be aware of this problem.
I noticed that the stern drive of this boat rides very low in the water when not moving. Nearly the entire lower unit is submerged. Could it be that the water is backing up through the exhaust manifold elbow ?
I can not visually see any cracks/corrosion in the block, exhaust manifold or the engine head. I removed both today.
What do you guys think ? Where does the water usually get in ?
Thanks"