Underhood Automotive
Changing The Oil On European Exotic Cars

When you start looking for oil for an exotic car, things can get confusing. Words like “approved,” “recommended” and “exceeds” are thrown around like a car in a four-wheel drift.

Emissions 101: A Basic Understanding Of How Catalytic Converters Operate

When servicing catalytic converters, it’s important to have a basic understanding of how they operate.

Alternator Pulley Diagnostics

When faced with an illuminated charge light diagnosis on most late-model vehicles, do not automatically assume the problem is inside the alternator and potentially unserviceable.

Solving Electronic Control Problems In Today’s Automatic Transmissions

Troubleshooting an automatic transmission can be one of the most intimidating diagnostic procedures a shop faces today.

Catalytic Converters: Efficiency Code Diagnostics

Understanding catalytic converter efficiency codes can be a long diagnostic road that can either lead to a happy customer or an expensive comeback.

Nissan VQ35 Water Pump: Chain-Driven Replacement Procedure

At the top of the list of the engines with the most challenging water pumps to replace is the Nissan VQ-Series V6 engines.

Better Engines Need Better Filters

Better oils used in better engines mean the need for better filters is more important than ever.

Spark Plug Fouling: Getting To The Root Cause Of Misfires

Spark plugs are the “canary in the coal mine” of the combustion chamber. The electrodes and porcelain can reveal short- and long-term problems if you know where to look.

10 Cartridge Oil Filter Tips

Cartridge oil filters make potential mistakes more likely because they require more knowledge and tools to properly change the oil than a canister filter.

Coil On Plug Ignition: The Wired Differences

For late-model vehicles, the norm is one ignition coil per cylinder, commonly known as coil on plug. The task of providing voltage potential to each spark plug is performed so reliably that it’s easy to take for granted.

Fuel Filters And Frequency Cycles

On most import vehicles, the three components with the highest manufacturing tolerances are ABS brake modulators, direct injection high-pressure fuel pumps and fuel injectors. All of these components are at the mercy of the fluids that circulate inside their respective systems.

10 Commandments Of Catalytic Converter Replacement

Catalytic converter replacement can be one of the most arduous repairs a shop takes on.