What to Do About Abnormal Noises When Accelerating Uphill?
2 Answers
Solutions for abnormal noises during rapid acceleration uphill are as follows: 1. Check for carbon deposits inside the engine: Carbon components in gasoline remain inside the engine due to incomplete combustion over time, forming carbon deposits, which can cause abnormal noises. 2. Check for engine knocking: Inspect the gasoline, carbon deposits in the cylinder combustion chamber, and spark plug faults one by one, then eliminate them accordingly. The reasons for abnormal noises after cold starts are: 1. Slipping of the belt on the generator: Intense friction and vibration between the belt and pulley produce noises at a certain frequency. Belt slipping might be due to a loose belt, so it's advisable to check at a repair shop promptly. 2. Usually, it's the sound of the valves: After the car has been parked for a long time, the engine oil returns to the bottom, leaving the top of the engine, i.e., the valve chamber, with insufficient oil. This lack of oil affects the sealing and lubrication of the valves, resulting in noticeable noises the next morning when starting the car.
Last time I encountered this issue, there was a 'clunking' noise during hard acceleration uphill. Common causes are engine knocking or a loose exhaust system. When the engine is under high load, abnormal fuel mixture can cause detonation in the cylinders, producing a metallic knocking sound that affects engine lifespan. Another possibility is loose exhaust manifold or muffler bolts, where thermal expansion and contraction causes noise. I recommend stopping the car to let it cool down first, then try revving the engine in neutral on level ground to listen for abnormal sounds. If the noise comes from the engine area, check the spark plugs or fuel quality. If it's from under the car, inspect the exhaust pipe fasteners. Don't ignore such problems - prolonged driving could damage the vehicle. In my case, adding fuel additives and tightening the bolts at the repair shop solved it. Using higher octane fuel and regular maintenance can prevent this. Safety first - don't delay repairs to save money.
