When your car’s engine makes a rattling noise, it’s important to get the help and advice of an expert quickly.

By understanding the potential causes behind engine rattling noise and taking prompt action, you can prevent long term damage to your vehicle.

Car Engine Making a Rattling Noise

Strange noises coming from beneath the bonnet are generally underlying issues that require attention. But what are the common causes and what do you need to do if you hear a rattling noise from the engine?

Engine rattling noise is more than annoying– it’s often a sign that there is a problem with the car. The rattling noise from the engine can vary from a light tapping to a harsh clatter, but the main causes tend to fall into a small number of categories.

Why Is My Car Rattling?

While diagnosing the exact cause of the rattling noise may require a professional inspection at a garage such as Keston Car Care, there are a few steps you can do to prevent engine rattles:

Car Maintenance: Regular servicing and maintenance such as oil changes prevent issues that lead to engine rattling noise. For any vehicle, carefully follow the manufacturer’s recommended maintenance schedule.

Listen In & Locate Where the Engine Rattle Comes From: Pay attention to when the engine rattling noise occurs – is it during startup, acceleration, or deceleration? This information can help a mechanic pinpoint the problem more quickly.

Don’t Delay: If you notice a persistent rattling noise from your car or van, don’t delay getting it checked. Ignoring an engine rattle could result in a hefty repair bill further down the road.

Rattle Noise from the Engine – Likely Causes

FRAYED OR WORN BELTS

A loose or worn belt in your engine can cause a rattling noise and without replacement can cause bigger engine issues. Regular servicing should help find these issues before any rattling starts so make sure your car is inspected regularly and have any belts replaced if necessary.

EXHAUST ISSUE

A faulty exhaust system, including loose brackets, broken hangers, or a damaged catalytic converter, might cause engine rattling noise as the components knock against each other. Apart from unwanted engine rattling noise, the vehicle will suffer from reduced engine performance and be less fuel efficient.

ENGINE MISFIRES

Engine misfires can lead to a distinctive engine rattling noise. Spark plugs, ignition coils, or fuel injectors are all common components which have faults that can lead to a rattling noise in the car.

COMPONENTS THAT ARE LOOSE

Engine rattling noise can be traced back to damaged components. A combination of heat, vibrations, and wear and tear can lead to nuts, bolts, or other parts becoming loose and they then rattle against each other, causing a concerning rattling noise from the engine.

ENGINE OIL TOO LOW

Incorrect oil levels may cause components to rub and therefore a rattling noise to emanate from the engine.  Again, regular servicing will ensure oil levels are correct and a top up is given if necessary. Even after adding oil, the engine rattle may still occur which will indicate that the problem might be coming from elsewhere. 

CAR TIMING CHAIN

Some cars and vans have a timing chain rather than belt, and a worn timing chain or damaged tensioner can cause rattling noises. Your local mechanic can inspect and repair the timing belt or tensioner to resolve the engine rattle.

Resolving the Rattling Noise from Your Engine

Engine rattle noise often indicates a problem with your car or van, but by taking the vehicle to a qualified mechanic, you’ll be able to get the engine rattle diagnosed and correctly repaired.

Car Making Rattling Noise FAQs

Can Low Oil Cause Car Rattling?

Yes, low oil can cause car engine rattles. Engine rattles not only stem from not enough oil but can be caused by old oil too. When oil starts to break down or you have a low oil level, not enough lubrication gets to the parts that need it, resulting in a noisy engine. Changing the oil or topping up the oil level to the correct amount will help resolve the issue.

Is it okay to drive a car making a rattling noise?

If you hear a rattling noise while driving, don’t ignore it and do not set off on a long journey knowing there’s a rattly issue. Rattles and vibrations coming from your vehicle could be the warning signs of a serious mechanical issue. Seek professional advice as soon as possible.

Why does my car rattle when I start it?

 A rattling noise during startup might indicate a problem with the starter motor or a loose component in the engine.

CONCLUSION

At Keston Car Care, we’re here to provide expert assistance and get your car back on the road, so don’t let that rattle cause you anymore concern – contact us today to schedule an inspection and keep your engine running smoothly.