What is the reason why the self-check fuel pump of CFMOTO 250NK does not make noise?
2 Answers
The reason why the self-check fuel pump of CFMOTO 250NK does not make noise is due to fuel pump damage. Replacing the fuel pump can solve the problem. Types of fuel pumps: A fuel pump is a lightweight and compact pump, which can be divided into three major categories: in-line, distributor, and unit type. The fuel pump requires a power source to operate, and the camshaft at the lower part is driven by the engine crankshaft gear. Composition of fuel pumps: The fuel pump proposes a design with a housing made of aluminum-containing material and a movable molded part set inside the housing. This movable molded part is at least partially made of a sinterable, iron-based alloy material containing at least one austenite.
I've ridden a CFMoto 250NK for five years and encountered the issue of no sound during fuel pump self-check. First, check the fuse located in the small black box near the battery—pull it out to see if it's blown. If the fuse is fine, then listen for the ticking sound from the fuel pump relay. Also, try turning the ignition key multiple times; sometimes poor contact causes this. Wiring issues are the most troublesome—inspect the wire harness under the fuel tank, especially after bumps, as connections can loosen. Last time, my bike had this problem because water splashed onto the connector during washing. If you can't fix it yourself, take it to a shop immediately. Don't force riding it—stalling mid-ride is too dangerous.