1970charger
New member
"I have a 1989 SeaRay with a 4
"I have a 1989 SeaRay with a 454. Prior to taking it out this year I started it at home with water running throught the lower unit. It started and seem to run fine. At the lake it started but when leaving the dock when I would accelerate it would bog down and die. I was able to get it re-started but soon it wouldn't even start back up and I ended up pulling it back home. At the time I thought that it might be a fuel problem so I replaced the anti-syphon valve, the water seporator and the fuel filter at the carberator. I also checked to see if there were any in-line filers between the tank and fuel pump and there weren't. At home it started back up and ran so back to the lake I went. It ended up doing the same thing. I took the boat home and checked and found that I had a weak spark. I replaced the coil and plugs. The new coil and plugs made a huge difference as it would always start and seemed to accelerate great. I thought I had fixed everything, so back to the lake I went. For the first ten minutes or so it would run great and accelerate up to speed as it always did in the past. However, after about ten minutes of running it started loosing power on the top end. If I would throttle it back to about half throttle it would again run fine without any noticable problem, no miss or anything. But if I would again accelerate it above half throttle it would start loosing power or bogging down almost like it was not getting enough gas. It sounds strange but at a point right above the point where it would run without power interuption, it seems the engine would surge and then loose power and surge again as the the front of the boat would rise and fall. The rest of the day it ran started consistantly and ran very well as long as we kept it at half throttle or below. At this point I'm not sure what to check. I still think it's a fuel problem, especially because of how it would surge. I've read on this forum that if the fuel tank vent is clogged this can create a simialar problem but I'm not sure where to find it. Could anything else cause this? What about the carborator? Althought I believe it a fuel problem, i'm also going to change the cap, rotor and wires just to make sure the entire electrical system is not contributing to the problem. Any help and/or ideas would be very appreciated. Thanks"
"I have a 1989 SeaRay with a 454. Prior to taking it out this year I started it at home with water running throught the lower unit. It started and seem to run fine. At the lake it started but when leaving the dock when I would accelerate it would bog down and die. I was able to get it re-started but soon it wouldn't even start back up and I ended up pulling it back home. At the time I thought that it might be a fuel problem so I replaced the anti-syphon valve, the water seporator and the fuel filter at the carberator. I also checked to see if there were any in-line filers between the tank and fuel pump and there weren't. At home it started back up and ran so back to the lake I went. It ended up doing the same thing. I took the boat home and checked and found that I had a weak spark. I replaced the coil and plugs. The new coil and plugs made a huge difference as it would always start and seemed to accelerate great. I thought I had fixed everything, so back to the lake I went. For the first ten minutes or so it would run great and accelerate up to speed as it always did in the past. However, after about ten minutes of running it started loosing power on the top end. If I would throttle it back to about half throttle it would again run fine without any noticable problem, no miss or anything. But if I would again accelerate it above half throttle it would start loosing power or bogging down almost like it was not getting enough gas. It sounds strange but at a point right above the point where it would run without power interuption, it seems the engine would surge and then loose power and surge again as the the front of the boat would rise and fall. The rest of the day it ran started consistantly and ran very well as long as we kept it at half throttle or below. At this point I'm not sure what to check. I still think it's a fuel problem, especially because of how it would surge. I've read on this forum that if the fuel tank vent is clogged this can create a simialar problem but I'm not sure where to find it. Could anything else cause this? What about the carborator? Althought I believe it a fuel problem, i'm also going to change the cap, rotor and wires just to make sure the entire electrical system is not contributing to the problem. Any help and/or ideas would be very appreciated. Thanks"