Noise that happens twice per revolution on my GX390 with pressure washer on it. Sounds internal to the engine. I’ve tried removing the pull starter to see if anything was hitting, then turning the motor over by the pump and it still makes the noise.
When cranking over with the electric starter or when it’s actually running you can’t hear anything (although the machine is pretty loud). Engine runs smooth. I’ve never run it low on oil, always check it before using.
Anyone seen this before? I’m just trying to avoid an engine tear down if I don’t have to.