What Causes the Increased Engine Noise in the Boyue?
2 Answers
The following are the reasons for the increased engine noise in the Boyue: 1. Engine overheating leading to damage: If the engine operates for an extended period, causing the surface to overheat, the cooling system may fail. The first step is to check the cooling system. If there is an issue with the cooling system, it could lead to exhaust blockage, as the vacuum tube might be broken. At this point, steam or hot air may escape from the engine, producing a "hissing" sound. 2. Internal engine issues, such as valve blockage: When the throttle is increased, the engine speed rises, but the vehicle speed does not increase, indicating internal engine problems. Again, check the cooling system to see if the coolant is normal. Then, inspect the oil pressure gauge to determine if the issue is related to oil pressure or ignition. Additionally, internal valve blockage could be the cause. If there is loud noise during acceleration or deceleration, inspect the generator shaft, water pump, or power steering pump.
Recently, the engine noise in my Boyue has become a bit louder, which is quite annoying. There could be several possible reasons for this. The most common one is insufficient or degraded engine oil, leading to poor lubrication and increased friction noise from pistons or bearings. I’ve experienced a similar situation before, and it improved significantly after changing to fresh oil. Worn-out belts or chains can also cause squeaky noises, especially if the timing components become loose, resulting in a more piercing sound. If there’s a small hole or leak in the exhaust system, you might hear a whooshing noise, like a whistle. Additionally, carbon buildup on spark plugs or improper ignition timing can cause uneven combustion, leading to unstable engine RPM and increased noise. I recommend first checking the oil level yourself and listening to the noise source with the engine idling under the hood—for example, near the belt area or rhythmic clicking sounds. If not addressed promptly, fuel consumption may increase, and internal components could get damaged, leading to higher repair costs. Regular maintenance, such as changing oil and filters, can help prevent this. Visiting a professional shop for a diagnostic tool check is the most reliable solution.
