Rgetter
Cadet
- Joined
- Apr 5, 2015
- Messages
- 17
I just bought a new to me boat. It has a 1985 mariner 50hp 4cyl outboard that I am having an issue and not sure what else to check.
Issue:
The outboard runs fine I but when I open it up the motor drops power like I just pulled back on the throttle. I have taken it out twice first time it did this about 20mins in. The last time it did this about 5 mins from leaving the dock.
It is running fine at all times, idles perfect, have no issues restarting the motor, and it never stalls out. The bulb is still hard and giving it an extra squeeze doesn't seem to make a difference. When I put boat back on trailer I felt all the plugs and they were all warm.
I have replaced the water pump(was bad when it got the motor), and had a mechanic go through the carbs as they were flooding out on idle when I bought it. He replaced the float, carb needles, and rectifier. He check compression which was around 125 on all cylinders and all had good spark. And that was about 3-4 weeks ago. I also replaced the hose and connectors on the fuel line ( Atwood kit w/fuel demand valve).
Anyone have any ideas what to check for? Right now my only ides are the fuel tank, the fuel demand valve, or maybe carbs out of sync? But I'm just guessing
Thanks
Issue:
The outboard runs fine I but when I open it up the motor drops power like I just pulled back on the throttle. I have taken it out twice first time it did this about 20mins in. The last time it did this about 5 mins from leaving the dock.
It is running fine at all times, idles perfect, have no issues restarting the motor, and it never stalls out. The bulb is still hard and giving it an extra squeeze doesn't seem to make a difference. When I put boat back on trailer I felt all the plugs and they were all warm.
I have replaced the water pump(was bad when it got the motor), and had a mechanic go through the carbs as they were flooding out on idle when I bought it. He replaced the float, carb needles, and rectifier. He check compression which was around 125 on all cylinders and all had good spark. And that was about 3-4 weeks ago. I also replaced the hose and connectors on the fuel line ( Atwood kit w/fuel demand valve).
Anyone have any ideas what to check for? Right now my only ides are the fuel tank, the fuel demand valve, or maybe carbs out of sync? But I'm just guessing
Thanks