Nighthawk1
Recruit
- Joined
- Jun 19, 2010
- Messages
- 2
Looking to purchase a 1998 GW 19 with subject motor on the back. I know about all the horror stories with this engine and am rolling the dice hoping to get a season or two out of it before repower. So here's the story;
1st trial; engine ran strong for 4 minutes then chocked out on water in fuel issue. Towed in at motro nevr started agian. Broker polished the ethanol fuel in the tank and no further problems noted.
2nd trial; All going well until broker says do you want to drive it? We were getting spurious check engine alarms and the chk engine redlight was coming on which I had been informed of before hand. Regrdless engine was running pretty well and I figured I would deal withthat situation if I could get this boat for a good #.
Then just for kicks I disconnected the cannon plug for the alarm horn etc. Suddenly at 1900 to 2400 RPM there is noticable misfire. After getting through that range its seems o.k. although I could only get about 4600 RPM top end out of it. 2 people in boat headed into wind and slight chop. 4 bladed prop installed.??
Could the misfire be part of the ECM problem as related to the intermittent chk engine alarms? Compression is basically good on all cylinders. #6 cylinder sightly low at 95 vice 110 cold, but looked o.k. after engine warmed up. Leak downs seemed decent although not sure the broker's mechaninc did them properly.
Any help or idea on this misfire would be appreciated. Broker says could be prop cavitation. I doubt that.
Cant' afford to repower this year and would like something to run around in for a bit this summer. Thanks much.
1st trial; engine ran strong for 4 minutes then chocked out on water in fuel issue. Towed in at motro nevr started agian. Broker polished the ethanol fuel in the tank and no further problems noted.
2nd trial; All going well until broker says do you want to drive it? We were getting spurious check engine alarms and the chk engine redlight was coming on which I had been informed of before hand. Regrdless engine was running pretty well and I figured I would deal withthat situation if I could get this boat for a good #.
Then just for kicks I disconnected the cannon plug for the alarm horn etc. Suddenly at 1900 to 2400 RPM there is noticable misfire. After getting through that range its seems o.k. although I could only get about 4600 RPM top end out of it. 2 people in boat headed into wind and slight chop. 4 bladed prop installed.??
Could the misfire be part of the ECM problem as related to the intermittent chk engine alarms? Compression is basically good on all cylinders. #6 cylinder sightly low at 95 vice 110 cold, but looked o.k. after engine warmed up. Leak downs seemed decent although not sure the broker's mechaninc did them properly.
Any help or idea on this misfire would be appreciated. Broker says could be prop cavitation. I doubt that.
Cant' afford to repower this year and would like something to run around in for a bit this summer. Thanks much.
Sorry then I wouldn't touch that motor with a 10 foot pole.