I just picked up a capri with a force 50 on it (model507x5a). It was running good then suddenly lost power. We were at cruising speed when it slowed down. Its like I can only get a quarter throttle out of it. Checked throttle cables, changed spark plugs,and 1 coil. compression on both cyliders is 125 When I choke it while running it dies. When I pump the primer at speed -no change. The lower cylinder spark plug looks like it hasn't been burning as hot as the upper one (REALLY clean). When I turn the flywheel by hand both plugs fire. Any ideas on diagnosing this?
