Variable Displacement Oil Pumps
Almost every major OEM has an engine or engine family that uses a variable displacement oil pump controlled by a control spring or ECM to deliver the best possible pressure and efficiency.
Diagnosing Intelligent Cooling Systems
You might be seeing a trend on late-model water pumps, such that an undersized mechanical pump being augmented by an electric pump with an electronic thermostat.
Drive Belt Checklist: What Are You Missing?
You might have only one chance to sell a customer a new serpentine belt. With belts lasting roughly 90,000 miles, proper inspection at the time of failure is critical not only for selling the belt, but also for ensuring add-on sales and better customer satisfaction.
Detecting Hose Problems Before They Explode
Recognizing the conditions that can cause a failure and the visual clues is vital in preventing a catastrophic failure.
VW/Audi Timing Belt Repairs
A quick look at the list of VW and Audi engine codes will make your head spin. Before starting any repair, you should know the Âengine code, production date and country of origin.
VIDEO: Gasket And Fluid Compatibility
Andrew Markel discusses how gasket life can be maximized by using fluids that are compatible with it without early degradation.
Top 10 Changes To Vehicles With Stop/Start Systems
In the shop, it is essential to understand what is different on stop/start vehicles and how it might change your diagnostic approach.
Cornwell Quality Tools Named Official Tools Of John Force Racing
Cornwell Quality Tools will be the official tools of John Force Racing starting in the 2019 season.
Secondary Air Injection Tips
Secondary air injection can be supplied actively from an electric air pump or passively from pulse pressure in the exhaust system. In a passive/pulse system, air is drawn in when a valve opens from vacuum created through exhaust flow. In an active system, air is blown from an electric pump, which allows for better control.
Don’t Fear The Turbo
The turbocharger gets a bad rap. So many technicians can name reasons why they have failed in the past, yet they can’t recall when or why a turbocharger has failed recently. With more and more vehicles employing a turbocharger to achieve power and fuel efficiency from a downsized engine, the importance of maintenance is more critical than ever.
