Well for a bit of antidotal evidence about the reliability and simplicity of YS engines. Currently have 5 different YS engines with the oldest about 4 years old. Fuel and go reliability...I've never had any major problem requiring service.

Sure, you do need to understand the fuel system, but other than that there the same. It's not like they're plasma power plants.

The engine which is of subject of this thread has a problem which I believe is related to the regulator. These issues will need to be resolved by someone qualified to repair the engine. The regulator on YS engines are responsible for controlling fuel flow during operation and when stopped. The check valves only responsibility is to ensure that pressure does not back escape from the fuel tank.

They are more complicated because they have a more sophisticated fuel system, but when it's working properly it's simple to setup and use. No more problems with a fuel tank which is not positioned properly, which has always annoyed me.

Just my opinion. Keep us posted on the solution.

Good luck.
Mike


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