i just bought a 70 model fixer upper with a 70 125hp evinrude out board. i got it home and checked it out and this is what i found. i have 135 lbs. of compression on each cylinder.i have only spark at my plugs when the ignition switch is let off of. the wire from what someone told me is a trigger under the flywheel to the power pack was corroded and brittle .i replaced the wire and still nothing. how can i test stator, powerpack, and coil.also is there a thing called a trigger. should i try this project or is this engine to old.thanhs