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What causes cam phasers to go bad?

Cam phasers are an important component of modern internal combustion engines, responsible for precisely controlling the timing of the engine's valves. However, cam phasers can sometimes fail, leading to various performance issues. In this article, we'll explore the common causes of cam phaser failure and what you can do to prevent it.


Causes of Cam Phaser Failure


There are several reasons why cam phasers can go bad, including wear and tear, oil contamination, and mechanical issues. Let's take a closer look at each of these factors:


Wear and Tear


Over time, the internal components of the cam phaser, such as the gears and bearings, can experience wear and tear due to the constant stress and friction of operation. This can lead to a loss of precision in the valve timing, resulting in reduced engine performance and efficiency. Regular maintenance and replacement of the cam phaser can help prevent this issue.


Oil Contamination


The cam phaser relies on engine oil to function properly. If the oil becomes contaminated with dirt, debris, or other impurities, it can interfere with the phaser's ability to adjust the valve timing. This can cause the phaser to become stuck in a single position, leading to poor engine performance. Regularly changing the engine oil and using high-quality oil can help prevent this problem.


Mechanical Issues


In some cases, the cam phaser itself may experience mechanical failures, such as a broken gear or a seized bearing. This can be caused by a variety of factors, including manufacturing defects, improper installation, or excessive stress on the component. If a mechanical failure is suspected, the cam phaser should be inspected and replaced by a qualified mechanic.


Preventing Cam Phaser Failure


To help prevent cam phaser failure, you can take the following steps:



  • Regularly change the engine oil and use high-quality oil that meets the manufacturer's specifications.

  • Have the cam phaser inspected during routine maintenance checks, and replace it if necessary.

  • Avoid driving in harsh conditions or towing heavy loads, as this can put additional stress on the cam phaser.

  • If you notice any symptoms of cam phaser failure, such as reduced engine performance or unusual noises, have the vehicle inspected by a qualified mechanic as soon as possible.


By following these preventative measures, you can help extend the life of your cam phaser and avoid costly repairs down the road.

What causes a cam phaser to fail?


Oil Contamination: Dirty or contaminated engine oil can cause the cam phaser to malfunction, as the oil is responsible for lubricating and cooling the component.



How to quiet cam phaser rattle?


Use of Oil Treatment (OT) for Ford Cam Phasers
All the engines showed less noise after adding the OT. When the dealership had a customer ask if there was some way to get rid of the cam phaser knock other than repair, the head of the maintenance shop at the dealership had him try adding PlanetSafe OT to his engine.



How much does it cost to repair a cam phaser?


How Much Does it Cost to Replace Cam Phasers? Replacing cam phasers is not cheap. You can expect to pay anywhere from $800 to $2500 to get the job done by a professional. Of course, the exact cost will depend on several factors, such as the year, make, and model of the vehicle.



What year Fords have cam phaser problems?


Ford Cam Phaser problems consisting of rattling noises and causing engine damage, or even engine failure are affecting the 2017-2020 Ford 150, and 2018-2020 Expedition. When a cam phaser fails, your Ford vehicle's VCT (Variable Control Timing) and ECU (Engine Control Unit) can be damaged.



Is there a recall on Ford cam phasers?


Owner Letters were mailed the week of September 27, 2021. Dealers should repair any affected vehicles that experience undesirable cam phaser noise after field service action 21B10, whether or not the customer has received a letter.



How to prevent cam phaser problem?


Maintenance Tips to Prevent Future Issues
Clean oil is crucial for maintaining the hydraulic operation of the phasers. Monitor Oil Pressure — Keep an eye on your engine's oil pressure. Low oil pressure can lead to inadequate lubrication and cause cam phaser malfunctions. Address any oil pressure issues promptly.



Can you delete cam phasers?


If the guides are not broken we can lock the timing chain tensioner in place and remove the camshaft-phasers. Then install an aluminum block inside the factory phaser to lock it in its correct position. We would then reassemble the engine and program your computer to not use the variable valve timing.



Can a cam phaser be fixed?


Replacing phasers will sometimes cure the problem but often rattle comes back within a few months. The sure fix to phaser problems is to lock the variable cam timing by essentially turning the phaser into a fixed timing gear. The WMS Cam Phaser Lockout kit will solve the phaser issue permanently.



Will Ford help pay for cam phaser replacement?


Since the cam phaser is part of the powertrain, Ford and Lincoln Protect Extended Service Plans cover repairs associated with cam phaser failures. If you do not currently have a plan on your vehicle, it may be time to look into the benefits and features of PremiumCARE, ExtraCARE, BaseCARE and PowertrainCARE ESP Plans.



Does Ford have a recall on cam phasers?


If an affected vehicle exhibits this condition, dealers are to replace all four cam phasers. This service will be covered by Ford Motor Company following the proration table contained within the terms and conditions. Owner Letters were mailed the week of September 27, 2021.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.