Have a Johnson seahorse 35 Hp , it'll run like new with muffs but soon as I put in water it'll only go maybe 5 mph. Both cylinders firing, carb been cleaned and redone anyone have an answer for me please. Thanks
Model #, pictures or year is helpful.-----Sounds like it might be running on 1 cylinder.-----Check reed valves.---Does spark jump a gap of at least 5/16" on a test device ?----Post compression test values.-----Check flywheel key.-----Check for blocked exhaust housing.
Model #, pictures or year is helpful.-----Sounds like it might be running on 1 cylinder.-----Check reed valves.---Does spark jump a gap of at least 5/16" on a test device ?----Post compression test values.-----Check flywheel key.-----Check for blocked exhaust housing.
Not sure of year. Both cylinders fire good. Sounds and runs like new until there's force if water around it. Really appreciate you answering me and trying to help me figure this out.
A 1982 model.-----They sound good to the untrained ear , when running on a hose.----Not making enuff power to push a boat.-----Should be easy to figure out.----Perhaps flooding.----Fuel pump diaphragm ruptured ??----Nozzle gasket missing?----High speed jet inside the carburetor bowl plugged.
Sounds like it is running on 1 cylinder.-----I can not see , feel or hear your motor.-----Trouble shooting must be done by you.-------Remove top plug wire.----Try and start the motor.-----Repeat with removing only the bottom plug wire.
Another way to chase that fault is use an old fashion timing light. You can use it to check which cylinder is not firing. As stated above - I bet you are on one cylinder. I had a similar situation on a V4 that dropped one cylinder and I could not achieve max rpm under load....... that turned out to be a simple coil issue.
OK found out coil pack was bad on one cylinder, change it out with another one I had on one of my other Johnson motors. Now problem is it won't turn off with key cause of that coil pack. What did I do wrong?
OK found out coil pack was bad on one cylinder, change it out with another one I had on one of my other Johnson motors. Now problem is it won't turn off with key cause of that coil pack. What did I do wrong
The grounds connected good never connected any other wires except for the ground and the positive yellow wire and now it days running with ignition off once it started
