Is There a Rustling Friction Noise from the Engine?
5 Answers
There are several reasons why the engine may produce a rustling friction noise: Bearing Failure: This can cause a rustling sound, which may turn into a rattling or squealing noise if severe. Immediate inspection and repair are recommended. Belt Aging or Looseness: Since the belt is made of rubber, it can harden in cold weather when the engine is cold. Upon startup, you may hear a sharp noise, but it typically disappears after pressing the accelerator a few times or allowing the car to warm up. To fix this, use an appropriate wrench to loosen the screws slightly—just enough to allow the car's motor to move freely.
I've been driving for over 20 years, and the sand-like friction noise from the engine is quite common. It's mostly caused by a loose or aged/cracked belt, producing an annoying sand-rubbing sound. Last time my car had this issue, I thought it was minor, but the belt snapped and left me stranded on the road, costing me over a thousand dollars in towing fees. I suggest you immediately check the belt's condition for cracks or looseness, and test its tension with soapy water. If the noise changes with RPM, it might indicate a faulty water pump or alternator bearing that needs prompt replacement. During regular maintenance, keep the engine bay clean to prevent dust buildup causing friction, and replace the belt every 50,000 km as prevention. Never delay repairs, or you risk damaging more components and doubling repair costs.
As a DIY car enthusiast, I've encountered the engine's rustling noise several times, usually due to drive belt issues. For example, a worn or slipping timing belt, or an aging accessory belt with frayed edges can produce a rustling sound during friction. It could also be a bearing failure, such as a lack of lubrication in the water pump bearing, where the noise increases with engine RPM. You can open the engine hood and use your phone to record and locate the sound source. A simple fix is to check the belt tension—adjust it slightly if it's too loose, but avoid excessive force to prevent breakage. For prevention, regularly use a stethoscope to check for bearing noise and replace belts every 40,000 kilometers. Ignoring the issue can lead to worsening noise or even engine overheating—spending a little now can save you from major repairs later.
When I first got my driver's license, my car also made a rustling noise, which scared me a lot. A friend said it might be a problem with the belt or bearing, simply put, it's the friction of aging parts. I drove straight to the repair shop, and after the mechanic checked it, he replaced a belt, and the noise was gone. I suggest you listen carefully to the location of the abnormal sound when parking. If it's coming from the front of the engine, don't force it and go to a professional shop for diagnosis. Pay attention to changes in the engine sound while driving, and regular maintenance can prevent such failures. After all, safety comes first, and small problems left unattended for too long might lead to a breakdown.
From a safety perspective, the rustling friction noise from the engine should not be ignored, as it may indicate belt system failure, such as a loose belt or damaged bearing, with the friction sound warning of impending component failure. If the belt snaps, the engine will suddenly stall, which is extremely dangerous at high speeds. It is recommended to pull over immediately for inspection or call for a tow truck, avoiding the risk of continued driving. Routine maintenance is crucial; check belt tension and replace aging components every two years, ensuring adequate lubrication. Prevention is better than cure, as regular maintenance can eliminate unexpected risks and higher repair costs.
