Chrishaglerr
Recruit
- Joined
- Feb 15, 2017
- Messages
- 5
Okay so last week on the water, my 87 50hp Johnson started bogging down and eventually died. Fired back up after sitting for like 10 mins and then ran perfect for 3-4 hours. Took it home and threw some muffs on and fired her up and she started smoking like crazy so pulled the cover and saw a bunch of fuel pouring from the carb... 2 rebuild kits later, I successfully rebuilt the carbs and no more leaking. Decided to do some routine maintenance and did the fuel/water separator filter which was completely torn apart on the inside form being so old, and had a bunch of water in it. Replaced that with a new filter.
When I fire it up now, it runs fine at a higher RPM (2000 or so) but idles rough and then dies at idle/low RPMs. Figured maybe it was the fuel pump so rebuilt that today...no luck. Went ahead and hooked it up to an external tank completely bypassing the water/fuel separator and it ran a lot better but still eventually died on idle speeds. When I choke the carbs when it starts dieing, it does revive it for a split second and then runs rough again.
Figured maybe it was bad fuel so went ahead and took a sample from the connection that clips into the motor by compressing the ball and pumping with the bulb and found small amounts of water in the fuel AFTER the water separator..as if its not doing its job. So I completely drained the tank, put another new filter on with fresh ethanol free fuel primed and a fresh tank of ethanol free fuel. Fired it up and still no luck! It still dies on idle. Even took the spark plugs and switched those for new.
Pretty sure its a fuel problem but what could it be? All new lines and bulb. Carb rebuild, fuel pump rebuild, fresh fuel, new fuel/water separator.
Only thing I'm curious about is the Fuel Solenoid on the side of the motor with the red lever on it. Read a post on here where someone said theirs went bad but I'm not even sure what it does or if its pointing in the correct direction (pointing towards front of boat). I read that someones primer melting in there or something and they removed it and it idled perfect and then replaced it but not too sure on how to mess with it. When I started the boat, as soon as I turned the key I did notice some fuel squirt out of that fuel solenoid but only as it cranked up.
Any idea?! I feel like I'm going crazy over here haha.
When I fire it up now, it runs fine at a higher RPM (2000 or so) but idles rough and then dies at idle/low RPMs. Figured maybe it was the fuel pump so rebuilt that today...no luck. Went ahead and hooked it up to an external tank completely bypassing the water/fuel separator and it ran a lot better but still eventually died on idle speeds. When I choke the carbs when it starts dieing, it does revive it for a split second and then runs rough again.
Figured maybe it was bad fuel so went ahead and took a sample from the connection that clips into the motor by compressing the ball and pumping with the bulb and found small amounts of water in the fuel AFTER the water separator..as if its not doing its job. So I completely drained the tank, put another new filter on with fresh ethanol free fuel primed and a fresh tank of ethanol free fuel. Fired it up and still no luck! It still dies on idle. Even took the spark plugs and switched those for new.
Pretty sure its a fuel problem but what could it be? All new lines and bulb. Carb rebuild, fuel pump rebuild, fresh fuel, new fuel/water separator.
Only thing I'm curious about is the Fuel Solenoid on the side of the motor with the red lever on it. Read a post on here where someone said theirs went bad but I'm not even sure what it does or if its pointing in the correct direction (pointing towards front of boat). I read that someones primer melting in there or something and they removed it and it idled perfect and then replaced it but not too sure on how to mess with it. When I started the boat, as soon as I turned the key I did notice some fuel squirt out of that fuel solenoid but only as it cranked up.
Any idea?! I feel like I'm going crazy over here haha.