Hi Yamaha owners.
Had an interesting fault that still existed after I had replaced coils, leads, plugs and over hauled fuel pump. Had 5psi out of fuel pump and 10psi out of hand primer and a electric pump I had connected. And still the engine stopped after 1500 meters. Removed carbs and found needles had a coating on them causing them to only let a little fuel into the carbs. Cleaned them with auto cutting compound and brake clean and engine goes perfectly now. Engine had been stopped for six months while I waited for my back to be operated on. As there is no lube going to the carbs only after the carbs I add 60mls of two stroke oil into every tank fill. There is no extra smoke and engine idles smooth as.
See ya
Jim Mikoz
Wellington New Zealand
Had an interesting fault that still existed after I had replaced coils, leads, plugs and over hauled fuel pump. Had 5psi out of fuel pump and 10psi out of hand primer and a electric pump I had connected. And still the engine stopped after 1500 meters. Removed carbs and found needles had a coating on them causing them to only let a little fuel into the carbs. Cleaned them with auto cutting compound and brake clean and engine goes perfectly now. Engine had been stopped for six months while I waited for my back to be operated on. As there is no lube going to the carbs only after the carbs I add 60mls of two stroke oil into every tank fill. There is no extra smoke and engine idles smooth as.
See ya
Jim Mikoz
Wellington New Zealand