I have a 1967 or '68 80 h.p. Johnson Sea Horse, I have little to no power. I understand its approximately 50 y/o but does anyone have any tips to get anymore power out of it before I give up and spend $$$$ on a new motor. It tops out at 6-7 mph.
i have had good luck by running sea foam through fuel tank and even using the spray sea foam directly in the intake to clean trash out of the fuel system i would try that before spending money on new motor. then move to rebuild carb or carbs if sea foam doesnt help.
I have a 1967 or '68 80 h.p. Johnson Sea Horse, I have little to no power. I understand its approximately 50 y/o but does anyone have any tips to get anymore power out of it before I give up and spend $$$$ on a new motor. It tops out at 6-7 mph.
What's the model number of that engine?
What make and designation spark plugs are you using?
Run a compression check. What are the psi readings of all the individual cylinders?
The spark on that type ignition should jump a 1/4" to 3/18" air gap with a strong blue lightning like flame... a real SNAP... does it? The gap is important!
