What are the causes of abnormal engine noise in the Qashqai?
3 Answers
The causes of abnormal engine noise in the Qashqai include faults such as axial movement noise of the crankshaft and mechanical abnormalities, such as piston knocking, crankshaft bearing knocking, connecting rod bearing knocking, piston pin knocking, and valve tappet knocking. The Nissan Qashqai is positioned as a compact SUV, with body dimensions of 4401mm in length, 1837mm in width, and 1611mm in height, and a wheelbase of 2646mm. In terms of power, the Qashqai is equipped with a 2.0-liter naturally aspirated engine and a 1.2-liter turbocharged engine. The 2.0-liter engine delivers a maximum horsepower of 154 hp, while the 1.2-liter engine produces a maximum horsepower of 117 hp. For transmission options, the Qashqai offers a 6-speed manual transmission and a CVT continuously variable transmission.
Abnormal engine noise in the Nissan Qashqai can stem from various causes. Having driven this car for several years, I've encountered similar issues. Common reasons include aging or loose belts, which produce high-pitched squealing sounds; insufficient or poor-quality engine oil leading to increased internal friction and louder engine noise; worn cylinders or piston rings causing knocking noises; exhaust system leaks or muffler holes resulting in a whooshing sound. Damaged water pump or generator bearings can also create whining noises. Ignoring these minor symptoms may escalate into costly engine overhauls and compromise safety. I recommend first checking the engine oil level and belt condition yourself. If the abnormal sounds persist, immediately seek professional diagnostics at a 4S dealership rather than risking continued driving. Regular maintenance with focused inspections on these components can effectively prevent such issues.
Abnormal engine noise is quite annoying, and I often hear Nissan Qashqai owners complaining about this. The underlying reasons may include: a worn or cracked drive belt making loud noises; engine oil level being too low or not changed for too long, increasing viscosity and causing friction sounds; damaged pistons or connecting rods leading to engine knocking; exhaust manifold leaks causing hissing sounds; uneven fuel injection causing ignition knock. You can check belt tension and oil dipstick levels yourself, but deeper issues require professional diagnostic tools. It's recommended to address these problems early, otherwise the engine might be severely damaged or even pose safety risks. Regular driving habits like proper warm-up and scheduled maintenance, such as checking oil levels and changing it every 5,000 kilometers, can save you a lot of trouble.
