I have '80 or '81 Suzuki Spirit 16 that has been a reliable motor for some time...was losing prime on portable fuel line early this year, and replaced tank, line, bulb, and fittings on both ends of fuel line. Engine starts/idles fine now, and bulb stays hard consistently, but engine bogs down and eventually dies when I idle past about 1/3 of the full throttle range. If in neutral, it will idle just fine, the problem only occurs when engine is in gear. It will start right back up with no difficulty but the same problem persists. There are no visible fuel leaks under the case and I don't know where to look next. Can anyone advise? Thanks.
