General Motors has issued a service update for 2021 model year full-size truck and SUV models that are being shipped to dealerships and may be affected by valve lifter problems. The hazards: this ...

Many of today's performance engines use some form of cylinder deactivation technology to increase fuel economy. When cylinders are deactivated, the engine uses less fuel, but simply "turning off" the ...

One of the advantages of hydraulic lifters is they don't normally require adjustment other than the initial installation. However, there may be situations where the ...