Hi Guys and Gals!
Thanks again for all of the help. At the end of June, we noticed a leak between the engine block and the head. Based on all the fine advice, we decided to tear the engine down to the block ourselves. The head gasket was blown so it was replaced along with every other gasket that was removed during the process.
The head was disassembled, both exhaust valves replaced, all seals replaced, resurfaced, and pressure checked. She got new injectors, thermostat, zincs, and impeller. Surfaces were primed and painted and we finally figured out which cylinder was #1 so the proper valve lash could be adjusted. Her mixing elbow was also scraped clean. Since we wanted to make sure that the loss of power could not be attributed to anything else her bottom was throughly cleaned as well as her prop and shaft.
Last Wednesday we bled the fuel system and she fired right up for us! The engine seemed louder than we expected however, we discovered during the bleed process what we had suspected for awhile. She had only been running on one cylinder. She was run for an hour with no problems and did not appear to have any change in oil consistency.
This Tuesday we sea trialed her. Although the current was stronger than usual, when running with the current we observed 6.1 knots at 50 % power. 6.5 at 80 % and 6.9 at 100%. The only smoke was at 100% and was faint and very light(possibly vapor) but we are not sure...any thoughts????
We were only out for 45 minutes with no apparent problems through any range of throttle. Planning another sea trial this weekend for approximatley 4 hours. Will be monitering engine space tempertature, carbon monoxide and speed again. Will also be checking oil afterwards for any abnormalities. Is there anything else we should be looking for????
Thanks again for all of the advice and p.s. we had a blast tearing her engine apart!
Thanks again for all of the help. At the end of June, we noticed a leak between the engine block and the head. Based on all the fine advice, we decided to tear the engine down to the block ourselves. The head gasket was blown so it was replaced along with every other gasket that was removed during the process.
The head was disassembled, both exhaust valves replaced, all seals replaced, resurfaced, and pressure checked. She got new injectors, thermostat, zincs, and impeller. Surfaces were primed and painted and we finally figured out which cylinder was #1 so the proper valve lash could be adjusted. Her mixing elbow was also scraped clean. Since we wanted to make sure that the loss of power could not be attributed to anything else her bottom was throughly cleaned as well as her prop and shaft.
Last Wednesday we bled the fuel system and she fired right up for us! The engine seemed louder than we expected however, we discovered during the bleed process what we had suspected for awhile. She had only been running on one cylinder. She was run for an hour with no problems and did not appear to have any change in oil consistency.
This Tuesday we sea trialed her. Although the current was stronger than usual, when running with the current we observed 6.1 knots at 50 % power. 6.5 at 80 % and 6.9 at 100%. The only smoke was at 100% and was faint and very light(possibly vapor) but we are not sure...any thoughts????
We were only out for 45 minutes with no apparent problems through any range of throttle. Planning another sea trial this weekend for approximatley 4 hours. Will be monitering engine space tempertature, carbon monoxide and speed again. Will also be checking oil afterwards for any abnormalities. Is there anything else we should be looking for????
Thanks again for all of the advice and p.s. we had a blast tearing her engine apart!
