2011 INFINITI EX35 Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2011 INFINITI EX35 Engine and How to Address Them

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Reviewed by
Aisha
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 2011 INFINITI EX35 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 2011 INFINITI EX35 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 2011 INFINITI EX35, and how should I diagnose them?

When diagnosing a ticking noise in the engine of a 2011 INFINITI EX35, it's crucial to follow a structured diagnostic approach that prioritizes simpler issues before tackling more complex ones. Begin by checking the engine oil level, as low oil can lead to insufficient lubrication, causing various engine components to produce noise. If the oil level is adequate, the next step is to inspect the valve lifters, as worn lifters are a common source of ticking sounds and may need replacement. Following this, examine the timing chain for any signs of wear or improper tension, since a malfunctioning timing chain can also contribute to the noise. Additionally, check the exhaust system for leaks, as these can sometimes create sounds that resemble ticking. If these initial checks do not resolve the issue, consider the possibility of spark knock, which can occur if the engine is not using the appropriate fuel octane rating. Should you still be unable to pinpoint the source of the ticking noise after these assessments, it may be wise to consult a professional mechanic who can conduct a comprehensive diagnosis using specialized tools and expertise. By adhering to this methodical approach, you can effectively identify and address the potential causes of the ticking noise in your vehicle.

What are the common causes of a ticking noise in the engine of a 2011 INFINITI EX35?

When dealing with a ticking noise in the engine of a 2011 INFINITI EX35, it's crucial to understand the common problems that could be at play. One of the first things to check is the engine oil level; low oil can lead to inadequate lubrication, causing components to rub together and produce a ticking sound. If the oil level is sufficient, consider inspecting the valve lifters, as worn lifters can also create similar noises during engine operation. Another potential culprit is the timing chain; if it is loose or worn, it may generate a ticking sound as it moves. Additionally, an exhaust leak can manifest as a ticking noise, particularly noticeable during acceleration, so examining the exhaust system for any leaks is advisable. Lastly, be aware of spark knock, which occurs when the air-fuel mixture ignites prematurely, resulting in a distinct ticking or pinging noise. Addressing these issues promptly is essential to prevent further damage to your engine, ensuring your INFINITI EX35 runs smoothly.

How urgent is it to address the ticking noise in the engine of a 2011 INFINITI EX35?

Addressing a ticking noise in the engine of a 2011 INFINITI EX35 is not just a matter of convenience; it is a critical step in maintaining the vehicle's health and safety. Ignoring this symptom can lead to severe consequences, including extensive engine damage that could result in costly repairs. Early detection is key, as identifying the source of the noise can prevent further deterioration of engine components, ensuring that your vehicle remains reliable. Additionally, unusual engine sounds can indicate underlying issues that, if left unchecked, may compromise your safety while driving. For DIY enthusiasts, it is essential to recognize that while some minor repairs may be manageable at home, a professional inspection is often necessary to accurately diagnose the problem. By addressing the ticking noise promptly, you not only safeguard your vehicle's performance but also enhance your overall driving experience, making it a priority for any responsible car owner.

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2011 INFINITI EX35 Engine Ticking Noise Causes & Solutions