2014 Mercedes-Benz GL350 Engine Makes A Ticking Noise

Ticking Noises in 2014 Mercedes-Benz GL350 Engine: Causes and Solutions

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
12% chance it's the
Exhaust Leak
0%
88% chance it's
Something else
The most common reasons a 2014 Mercedes-Benz GL350 engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak.
  • Exhaust Leak: A damaged exhaust manifold or a loose connection in the exhaust system can cause an exhaust leak, resulting in increased noise and potential loss of engine power.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2014 Mercedes-Benz GL350 engine makes a ticking noise?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

If the drive belt idler pulley fails, there will be a very audible chirping noise from the front of the engine. This is because the idler pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to slip off. If the belt falls off, the accessory that it drives will no longer function. For instance, if the alternator belt idler pulley fails, the alternator may stop functioning. Also if the pulley begins to wobble, allowing slack in the belt, it will make an extremely loud squeaking or screeching noise, especially on cold starts. This is the belt slipping on the crankshaft pulley, and will require belt replacement once the idler pulley is replaced.

If the drive belt tensioner fails, there will be a very audible chirping, grinding, or rattling noise from the front of the engine. This is because the tensioner pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to lose tension, or break. If the belt falls off, the accessory that it drives will no longer function. Also, if the tensioner spring fails, allowing slack in the belt, it may make an extremely loud squeaking or screeching noise combined with a rattle as the tensioner bounces back and forth under load. The squealing noise is the belt slipping on the crankshaft pulley, and will require belt replacement once the belt tensioner is replaced.

An engine leaking oil does not always make a puddle on the ground. A burning smell may be noticed from the front of the vehicle after driving. This is because engine oil leaks may fall onto hot engine components, especially the exhaust manifold, and burn off before making it to the ground. This poses a risk to the engine because the leak going unnoticed may deplete the engine oil reserve, and lead to an oil starvation issue. Some engine oil leaks only occur while the engine is running, so the leak may be larger than the small spot on the ground makes it seem.

Noises can be accompanied by many annoying or worrisome sensations. Consider the noise of grinding brakes, the noise sounds much like the brake pedal and steering wheel feel. This is important, as random noises can be difficult to replicate without knowing when the sound occurs, what must be done to make the sound, and what sound it is. Any professional technician can replicate and diagnose most noises, but to ensure the vehicle is more quickly diagnosed, make sure you tell your technician these three pieces of information.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the potential causes of a ticking noise in the engine of a 2014 Mercedes-Benz GL350, and how should I diagnose them?

When faced with a ticking noise in the engine of your 2014 Mercedes-Benz GL350, it's crucial to follow a methodical diagnostic approach to uncover the root cause. Begin by checking the engine oil level, as insufficient oil can lead to inadequate lubrication, resulting in ticking sounds. If the oil level is adequate, the next step is to inspect the valve lifters for wear, as these components can degrade over time and may require replacement. Following this, examine the fuel injectors, since malfunctioning injectors can also contribute to engine noise; ensure they are operating correctly. Additionally, assess the timing chain for any signs of looseness or wear, as issues in this area can produce similar ticking noises. Finally, inspect the exhaust system for leaks, particularly near the engine, as these can create sounds that mimic engine ticking. To effectively diagnose the problem, conduct a visual inspection of the engine components, listen closely to identify the noise's source, and consider using a mechanic's stethoscope for a more precise evaluation. If these steps do not lead to a resolution, consulting a qualified mechanic is advisable for a thorough diagnosis and appropriate repairs. By adhering to this structured approach, you can efficiently pinpoint the cause of the ticking noise and take the necessary steps to address it.

What are the common causes of a ticking noise in the engine of a 2014 Mercedes-Benz GL350?

When you hear a ticking noise coming from the engine of your 2014 Mercedes-Benz GL350, it’s essential to understand the potential causes to effectively address the problem. One of the most common culprits is valve train issues, which may arise from worn lifters or camshaft lobes, leading to irregular engine performance. Additionally, low or dirty engine oil can significantly impact lubrication, resulting in ticking sounds as metal components rub against each other. Another area to inspect is the timing chain tensioner; if it’s faulty, it may not maintain the necessary tension on the timing chain, causing a noticeable ticking. An exhaust leak, particularly near the engine, can also produce similar noises, indicating a need for repair. Lastly, malfunctioning fuel injectors can create ticking sounds during operation, suggesting a potential issue with fuel delivery. By systematically checking these areas, you can identify the source of the ticking noise and take appropriate action, whether it involves simple maintenance or seeking professional assistance.

How urgent is it to address the ticking noise in the engine of a 2014 Mercedes-Benz GL350?

Addressing a ticking noise in the engine of a 2014 Mercedes-Benz GL350 is not just a matter of convenience; it is a critical step in ensuring the longevity and safety of your vehicle. Early detection of such noises can significantly mitigate the risk of further damage to engine components, which can escalate into more severe and costly repairs if left unchecked. For DIY enthusiasts, understanding the urgency of this issue is essential, as neglecting it could compromise the vehicle's performance and efficiency. Moreover, engine noises can often indicate underlying problems that may pose safety risks to both the driver and passengers. Therefore, taking immediate action to diagnose and resolve the ticking noise is crucial for maintaining the overall health of your vehicle and ensuring a safe driving experience. By prioritizing this issue, you not only protect your investment but also enhance your vehicle's reliability on the road.

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