Bubbles Up
Petty Officer 2nd Class
- Joined
- Aug 4, 2009
- Messages
- 106
Hello all,
I am new to the boat ownership world as an adult. I got a good deal on a 1979 Merc 7.5 (s/n 5145529) and a 12 foot aluminum car topper.I will try to be as descriptive as I can.
I had the engine serviced because it was sitting ofr a few years in a garage. I had the carb cleaned,new plugs(NGK) and a new impeller and the starter rope fixed.Along with a grommet (cooling related) and a seal replaced (crankcase?) the leg oil was also serviced. The fuel tank that was included I cleaned it out(steam cleaned) and alcohol dryed a new fuel pickup and to the motor is all brand new.I run a 50;1 fuel mix (Merc 2 stroke + premium fuel)
The issues it seems to be that when I troll that after 20-30 minutes it will stall sometimes it will be 1 pull and back running for another few minutes other times I can pull that starter rope 20 times then it fires up.
Another issue is that when I open the throttle wide open it seems like that the motor revs up then it is like a "transmission" slipping then it seems to catch fully then produce power/speed. When I reverse I can hardly back away from the dock,I can rev the engine quite high and no real difference.
My fishing buddy has a Honda 7.5 4 stroke (1978) I can come nowhere near his speed or power and he has a Lund. My full throttle is his half!
Your expertise will be greatfully be appreciated. If I have missed something pleas ask and I will do my best to answer your question(s).
I am new to the boat ownership world as an adult. I got a good deal on a 1979 Merc 7.5 (s/n 5145529) and a 12 foot aluminum car topper.I will try to be as descriptive as I can.
I had the engine serviced because it was sitting ofr a few years in a garage. I had the carb cleaned,new plugs(NGK) and a new impeller and the starter rope fixed.Along with a grommet (cooling related) and a seal replaced (crankcase?) the leg oil was also serviced. The fuel tank that was included I cleaned it out(steam cleaned) and alcohol dryed a new fuel pickup and to the motor is all brand new.I run a 50;1 fuel mix (Merc 2 stroke + premium fuel)
The issues it seems to be that when I troll that after 20-30 minutes it will stall sometimes it will be 1 pull and back running for another few minutes other times I can pull that starter rope 20 times then it fires up.
Another issue is that when I open the throttle wide open it seems like that the motor revs up then it is like a "transmission" slipping then it seems to catch fully then produce power/speed. When I reverse I can hardly back away from the dock,I can rev the engine quite high and no real difference.
My fishing buddy has a Honda 7.5 4 stroke (1978) I can come nowhere near his speed or power and he has a Lund. My full throttle is his half!
Your expertise will be greatfully be appreciated. If I have missed something pleas ask and I will do my best to answer your question(s).