I have a problem with my 86 Mercury 35hp outboard and I am at a total loss. Last year it ran fine for most of the summer. Towards the end of the season it would run fine then start bogging for no reason. After a while I found a bad connection on plug 2. I fixed that and a couple of day later it started doing it again but it wasn’t the same thing. The last trip in the boat it would only run in full throttle and I could row faster. Pulled the boat and tried to figure it out to no avail. I winterized it and figured to rebuild in the spring. Weird note that when I winterize, I disconnect the quick connect on the engine and it would run 5 or so minutes before speeding up because of low fuel. This time it sped up as soon as I disconnected the quick connect.
So spring came and it still would not run unless it was at full throttle and bogging. I rebuilt the fuel pump and carburetor and still wouldn’t run. I swapped carbs from my parts engine and still doesn’t work. I put paper over entrance to block and it sucks in so reed valves seem to work. Compression is fine. The only visible sign s of problems is :
1. When trying to start with throttle at idle the carburetor drips gas from front and from the throttle plate pin. (on both carbs)
2. Small leak from water jacket near the spark plugs that I will fix once the running part is fixed.
What am I missing
Thanks
Dan
So spring came and it still would not run unless it was at full throttle and bogging. I rebuilt the fuel pump and carburetor and still wouldn’t run. I swapped carbs from my parts engine and still doesn’t work. I put paper over entrance to block and it sucks in so reed valves seem to work. Compression is fine. The only visible sign s of problems is :
1. When trying to start with throttle at idle the carburetor drips gas from front and from the throttle plate pin. (on both carbs)
2. Small leak from water jacket near the spark plugs that I will fix once the running part is fixed.
What am I missing
Thanks
Dan