What Causes the Engine Noise in Buick Verano?
2 Answers
Buick Verano engine noise causes: 1. The engine oil viscosity is too high, resulting in insufficient lubrication during engine operation, causing friction and noise. It is recommended to replace with suitable engine oil; 2. Loose external parts fixed to the engine or interconnected with it can also cause engine noise. It is advised to tighten the screws in the engine compartment or replace aging components. Adding sound insulation cotton also has a good effect. The Buick Verano is a mid-size sports sedan under SAIC-GM Buick, equipped with two powertrain options: a 1.3T SIDI direct-injection turbocharged engine paired with a CVT intelligent continuously variable transmission, and a 1.0T direct-injection turbocharged engine mated to a 6-speed DSS intelligent transmission. The vehicle's dimensions are 4723mm in length, 1802mm in width, 1466mm in height, with a wheelbase of 2700mm.
As an experienced auto mechanic, I've seen many cases of abnormal noises in the Buick Verano. The ticking sound during cold starts is mostly caused by hydraulic lifters - it happens when the oil hasn't fully circulated yet, and if it disappears after the engine warms up, there's no need to worry. If you hear continuous metal knocking sounds, it might be engine knocking - check for spark plug carbon buildup or whether you're using gasoline with the proper octane rating. Squeaky belt noises usually indicate a worn tensioner pulley that needs immediate replacement, otherwise you risk being stranded when it fails completely. The most concerning is a rattling timing chain noise - this requires immediate shutdown and inspection, otherwise you could face valve damage costing over ten thousand yuan in repairs. Oh, and don't forget to check the engine mounts - cracked rubber mounts causing engine movement can also create clunking noises.