VVT Archives - UnderhoodService
Lifter Deactivation

The area of contact between the lifters and cam lobes is the highest loaded surface inside an engine.

10 Timing Belt Tips

Here are the some key installation and service tips to make your next timing belt job just a little easier.

VVT Systems (VIDEO)

It’s important to remember that VVT is a system, not a single component or a part. This video is sponsored by Standard.

Performing a VVT Service Properly (VIDEO)

When servicing a VVT issue, take your time and follow the steps.
This video is sponsored by Standard.

Variable Valve Timing Benefits And Systems Overview (VIDEO)

What is variable valve timing and how does it affect the way the engine operates? This video is sponsored by Standard.

VIDEO: The VVT Phaser And Oil Control Solenoid Connection

Variable Valve Timing or VVT is a technology that has been around for almost 20 years. This video is sponsored by NGK and NTK.

The Importance of Clean, Quality Oil in Timing Chain Systems

Using the wrong oil is a common problem that causes a vehicle’s timing chain to wear even quicker.

VIDEO: How OE Vehicle Systems Are Engineered To Work Together

Many parts may “meet spec” but are they the best option? This video sponsored by ACDelco.

VIDEO: Diagnosing Camshaft Timing Issues

With VVT, before turning nuts and bolts be sure to check the oil. This video is sponsored by The Group Training Academy.

VIDEO: Lack Of Oil Attention Can Kill VVT Systems

VVT systems need proper oil maintenance. This video brought to you by the Group Training Academy.

Diagnostic Strategies For Variable Valve Timing Systems

Here are seven diagnostic strategies that can be applied to any vehicle with variable valve timing problems.

VIDEO: VVT: How Oil Is Like Electricity

Andrew Markel discusses the variable valve timing system, and how the behavior of oil in the system is a lot like voltage passing through a component or module. Sponsored by MAHLE.