Steve's CFMoto 650 NK（春风 650 NK）

[ZMC888]

Steve doesn't sound like it was the TPS. See the TPS just tells the engine how much fuel to put in, so logically if it were cracked then you'd have WOT throttle instead of idle or idling and not being able to open the throttle from idle.

The thing under the tank, I believe is the fuel filter.

To me it sounds like some cracked or damaged connectors or wiring is screwing things up. Those lamda sensors I believe are Magnetti Marelli design, surely they should be more reliable and be one of the last things to screw up. Electrical connectors also sound like the culprit because you say when riding in the rain or wet the bike runs better. That would logically mean that something is shorting and the water is preventing this shorting or there is a loose connection and the water being present is causing the conductivity to pass through it. I heard before one Auzzie guy traced fueling problems down to his damaged and very cheap ECU connector.

I wonder if it is possible to trawl though some of the wiring loom and replace the most important wiring connectors with western quality stuff. Should be fairly cheap, but time consuming.