Ford 16H no power?

[shawmic]

My Ford 16 H 2-cylinder has limited power if I turn on the blades--motor will stop. New plugs, wires, filters installed. Cylinder pressure appears to be ok.

Possible fixes?? coil/module or fuel pump? The spark plugs get dirty/black quickly.

What are some possible solutions?
 

[wisbaker]

Dirty black spark plugs means it running rich or not firing well. If you pull the plugs out and clamp them to the block with the leads still on what does your spark look like?
 

[El Toro]

You need to pull off a plug wire when the engine is at an idle. See if there's a hot blue spark
when at an idle. You may have a weak coil .

I would also close the main jet adjustable screw
to lean the engine some. Also do a compression check. If the carburetor is set too rich you may be getting too much fuel on the cylinder walls washing the oil off. If you have the old points and condenser I would install new points and a condenser. If an electronic module is used for ignition it may be getting weak. Hal