What is the reason for the rattling noise in CB190?
3 Answers
The reason for the rattling noise in CB190 is that the tensioner spring preload is too small, and it can be resolved through adjustment. The following are precautions for motorcycle maintenance: Cool down before washing: Suddenly rinsing the engine, exhaust pipe and other components with cold water will damage the oil seals of various parts, causing oil leakage in the engine. It will also lead to the chrome plating at the connection between the exhaust pipe and the engine peeling off, oxidizing and rusting. Cleaning method: It is best to use a cloth for wiping. Avoid direct water flushing on the exhaust pipe outlet, horn, spark plug, air filter, battery and other parts. These areas contain electrical circuits, and getting them wet may cause short circuits or leakage, resulting in issues such as non-functioning lights, silent horn, failure to start, or weak driving performance.
I also encountered this ticking sound when riding my CB190, which is usually caused by excessive valve clearance. The CB190's engine is quite precise, and if the valve clearance isn't adjusted regularly, the sound tends to appear when the bike heats up. Sometimes, a loose chain can also produce a similar knocking noise, especially during stop-and-go city riding. I recommend checking the valve clearance first using a feeler gauge—the standard values should be listed in the manual. If left unaddressed, minor issues could escalate, such as damaging the valves or piston. Regularly inspecting the valve clearance and chain tension every 5,000 kilometers can save a lot of hassle. Similar engine noises are common in motorcycles of this type, and Honda models in particular require extra attention to maintenance schedules.
As someone who frequently works on cars, I believe the rattling sound in the CB190 mostly comes from the chain system. If the chain is loose or worn out, it will make a rattling noise when rotating. Internal engine issues like worn piston rings or excessive connecting rod clearance can also cause this sound. When I inspect, I first listen for the sound source. If it's near the front cover, it's likely the chain; if it's from the rear, then core engine issues should be considered. If you're doing it yourself, use a wrench to tighten the chain adjustment screws and see if the noise reduces. But don't force it, as damaging the chain can be troublesome. Safety comes first when riding—if you hear unusual noises, slow down and stop to check. After modifications or heavy loads, problems can accelerate, so regular chain lubrication is key to prevention.
