Underhood Automotive
All About Timing Chains

You’ve probably noticed that a chain rather than a belt drives the camshaft. Why is this the case?

Maximize Engine Potential With O2 Sensors, Tuning

Oxygen sensors and the closed-loop EFI systems that utilize them can unlock amazing levels of performance.

Remanufacturing And The EV-Battery Challenge

One researcher is particularly interested in the fate of EV batteries once they reach the end of their automotive lifecycle.

What Happens When A Timing Belt Breaks? — FSI Timing Failure

Diagnosing a broken timing belt or broken timing chain, and what that really could mean for the engine.

Fuel Pump Controls For Pressure and Volume

These systems are very efficient and are able to get the right amount of fuel into the cylinder so no fuel is wasted.

How To Replace The Water Pump On A 2007 Toyota FJ Cruiser

This job is moderately difficult because of multiple components that need to be removed.

Inside The Ultimate Callout Challenge

The UCC pits trucks against one another in drag racing, a dyno competition and sled pulling events.

Staying Cool With Electric A/C Compressor Service

If you follow the recommended service procedures, repairs will go as “cool” as the air coming out of those A/C vents.

EV Batteries: Design, Function And Handling

Knowledge of HV batteries, OEM procedures and special tools are all important to ensure a complete, safe and quality repair.

Building 6.6L Duramax Diesel Engines

The Duramax diesel can be built to do anything you want. The only obstacle is your wallet.

Fixing Late-Model Ford Focus Engine Vibration Problems

Inspect the rear engine roll restrictor for debris and install a service shield.

How Battery Service Continues To Change

Your attention to a battery’s condition will tell you if it needs to be replaced – and with what.