Home › Forum › Ask A Member › Sea King 1 HP midget won’t start › Re: Sea King 1 HP midget won’t start
I know from experience how easy it is for the tiny fuel passage in the carb to clog up. Take some carb cleaner, and using the extension tube spray through the little hole in the bottom corner of the float bowl and out through the little hole underneath the poppet valve. Follow this with compressed air to make sure it’s clean. I like to use some OMC Engine Tuner or Mercury PowerTune for this, followed by some carb cleaner.
The crankcase compression may also be a problem. With the spark plug out, move the piston up to the the firing position. Once the piston begins to move past this position, towards the carburetor, place your thumb over the plug hole and continue to rotate the flywheel slightly, as you pull your thumb away. You should hear an audible ”pop” and feel a strong vacume as you pull your thumb away. It may take a few practice tries at this but it is a good test to see if the piston is able to pull the charge in.
How much air gap will the ignition spark jump? Your spark may be weak under compression. I think this one should jump a 1/4 inch if you give it a hard pull with the spark plug removed.