2018 Toyota Tacoma Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2018 Toyota Tacoma 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 2018 Toyota Tacoma 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 2018 Toyota Tacoma 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 2018 Toyota Tacoma, and how should they be diagnosed?

When diagnosing a ticking noise in the engine of a 2018 Toyota Tacoma, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex issues. Start with a visual inspection of the engine to identify any obvious signs of damage or leaks, as these can often be the source of the problem. Next, check the engine oil level and quality; low or dirty oil can lead to insufficient lubrication, resulting in ticking sounds. Pay close attention to the conditions under which the noise occurs, such as during acceleration or idling, as this can provide valuable clues about the underlying issue. If the ticking persists, consider inspecting the valve train components for wear, as well as the timing chain or belt for any signs of looseness or damage. Additionally, examine the exhaust system for leaks, which can also produce similar noises. If you are unable to pinpoint the cause or if the problem continues, consulting a qualified mechanic is advisable for a more thorough evaluation and accurate diagnosis. By following this structured diagnostic approach, you can effectively identify and address the ticking noise in your Tacoma's engine.

What could be causing the ticking noise in the engine of a 2018 Toyota Tacoma?

When diagnosing a ticking noise in the engine of a 2018 Toyota Tacoma, it's essential to explore several common problems that could be causing this issue. One significant factor to consider is low engine oil, which can lead to inadequate lubrication, resulting in engine components rubbing against each other and producing a ticking sound. Additionally, worn valve lifters may contribute to similar noises as they fail to operate smoothly within the engine. An exhaust leak is another potential source of the ticking, particularly noticeable when the engine is running, as escaping gases create a distinct sound. Furthermore, issues with the timing chain, such as wear on the tensioner or misalignment, can lead to ticking noises that require immediate attention. Lastly, spark knock, or pre-ignition, can also manifest as a ticking sound, indicating potential problems with the combustion process. To effectively address these issues, it is advisable to consult a qualified mechanic who can accurately diagnose the problem and recommend appropriate solutions.

How urgent is it to address the ticking noise in the engine of my 2018 Toyota Tacoma?

When you hear a ticking noise in the engine of your 2018 Toyota Tacoma, it’s essential to act swiftly rather than dismiss it as a minor annoyance. Early detection of engine noises can be crucial in preventing more severe problems that could lead to costly repairs or even engine failure. Identifying the source of the ticking is vital; it could range from something as simple as a loose component to more serious issues like valve problems or low oil levels. Ignoring these sounds not only risks your vehicle's performance but also poses safety concerns while driving, as engine malfunctions can lead to unexpected breakdowns. Regular maintenance and prompt attention to unusual noises are key to ensuring your Tacoma remains reliable and safe on the road. Therefore, while it may not seem like an immediate emergency, addressing the ticking noise should be a priority to safeguard your vehicle's health and your safety.

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