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Tech Feature: Detecting Misfires in OBD II Engines

With OBD II, there’s no missing misfires. Most engine control systems with OBD II monitor the speed of the crankshaft between cylinder firings to detect misfires. More

Z Sport, Part II: Powering Subaru Engine & Chassis Upgrades

A few months back, I highlighted a project car being built by Z Sport. The car is now back together and running. Charles Damewood, the car’s owner and a principle at Z Sport, has been driving the car to break in the engine, and get an idea of what needs to be sorted out as far as engine management before doing a full on dynamometer test. As soon as fuel mapping and software issues are resolved, we... More

Tech Feature: Diesel Crankshaft Basics

Whether in a gasoline or diesel-powered engine, the crankshaft is a key component. With diesels, the crank is typically thought of as bigger, heavier and harder to get in the aftermarket. Some preconceptions are factual, say experts, while others are unfounded. More

Engine Maintenance: OBD II Diagnostics, Misfire Codes, Fuel Trim Faults, Driveability and More

As automotive electronics diagnostics continues to evolve, so do the tools that are need to diagnose and repair today's complex engine and electronics systems. This lineup will arm you will some diagnostic tips and give you some invaluable service advantages on Porsche, BMW, Hyundai and Mazda models. More

Kia Preventive Maintenance: Chassis, Engine & Brake Repairs

More Kias on the road means more repair and maintenance opportunities for the import car specialist, so don't let them pass you by. In this article, Bob Dowie focuses on the most common problems and maintenance items that have them finding their way into your bays - like check engine light, brake and chassis repairs. More

Tech Feature: Boosting Profits Through Turbocharger Services

A turbo's basic purpose is to boost power, so when an otherwise healthy engine suddenly becomes anemic, it often (but not always) means turbo trouble. More

Directions: Fueling Your Appetite for Knowledge

In the manual Changes in Gasoline IV, every attempt is made to focus on the auto technician’s areas of interest and to cover current topics. A new chapter on Flex-Fuel Vehicles (FFVs) and E85 has been added, as E85 appears to be emerging as the renewable fuel of choice. More

Tech Tip: Toyota Charging Improvement at Idle

Some customers with a 1998-2003 Sienna may complain of a low battery or no-start condition after running the engine at idle or low RPM for extended periods of time with several accessories on during high-temperature conditions. A new alternator has been developed to improve charging performance at idle. More

Tech Tip: Whine, Whistle and Ringing Heard from Cadillac's Engine

Some customers may comment on a whine, whistle or ringing-type noise from the front of the engine that increases in intensity as engine rpm increases. This noise is most audible standing in front of the vehicle with the hood opened. If the noise fades into the ambient engine noise by 2,000 rpm, refer to PIP3453 in the Service Information (SI) for camshaft drive chain noise. More

Tech Tip: Noisy Infiniti Water Pump Flange

An Infiniti driver may complain of a screeching noise when the vehicle is first started in the morning. The noise dissipates once the vehicle is warmed up. This condition may occur if the water pump had recently been replaced and the fan coupling to water pump flange bolts were not torqued correctly. More