2000 Searay Sundancer with 7.4 mpi. Replaced fuel pump/cooler over the mild winter here in Northern Ca. Apparently, I didn’t tighten the hose clamp enough to water supply on starboard side engine. Tested at home and idle check on lake. Everything was great during idle check but when I opened her up she started lagging. Ran her maybe 2 minutes and shut it down. Open the lid and water was everywhere and bilge started. Engine over temp alarm then went on for about 10 seconds then back off. Engine was off. Waited about 10 minutes and had wife turn engine over with me watching and water shot out of the hose - right torwards the intake. Checked oil and it was full of milkshake. Let the boat sit for 15 min and hooked the hose on security. Boat started and sounded OK so idled back to dock and took her home.
On my driveway leans slightly to starboard side. Water in spark plugs on starboard side. Port side didn’t see obvious sign of water. Not sure if due to lean. Pulled the starboard exhaust manifold and inspected. No crack and water tested. Seems fine. Exhaust ports are not rusty. Ready to pull head. Compression test was 105-120 but #3 was 90. No pinging.
I pulled about 12 qts of milkshake out of the engine so estimating 5-6 quarts of water in the oil.
Question: could I have pulled that much water into the intake and if so does the above make sense. I had water in my oil before I connected the hose back up but don’t know exactly when it blew off? Just trying to avoid pulling the heads if I don’t have too. Is there any others tests I can run? Thinking I might clean out the milkshake, add fresh oil, and rerun the engine until hot. Would a hose test be an adequate to leak test or does the boat need to be in the water (lake 10min away) with some torque and pressure? Just looking for some additional ideas or thoughts from all the experience on this forum. All ideas appreciated…thank!
On my driveway leans slightly to starboard side. Water in spark plugs on starboard side. Port side didn’t see obvious sign of water. Not sure if due to lean. Pulled the starboard exhaust manifold and inspected. No crack and water tested. Seems fine. Exhaust ports are not rusty. Ready to pull head. Compression test was 105-120 but #3 was 90. No pinging.
I pulled about 12 qts of milkshake out of the engine so estimating 5-6 quarts of water in the oil.
Question: could I have pulled that much water into the intake and if so does the above make sense. I had water in my oil before I connected the hose back up but don’t know exactly when it blew off? Just trying to avoid pulling the heads if I don’t have too. Is there any others tests I can run? Thinking I might clean out the milkshake, add fresh oil, and rerun the engine until hot. Would a hose test be an adequate to leak test or does the boat need to be in the water (lake 10min away) with some torque and pressure? Just looking for some additional ideas or thoughts from all the experience on this forum. All ideas appreciated…thank!
