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Fire in the hole! Spark plugs: past and present

Fire in the hole! Spark plugs: past and present

Fire in the hole. That, as you know, is how the internal combustion engine works. Mixing fuel and air then igniting it causes a rapid rise in pressure. This is often called an explosion, but in an engine, it is in reality a controlled burn.

Article

Hybrid vehicle air conditioning service

Craig Van Batenburg of ACDC explains the critical handling safety concerns when testing voltage...

There are over 1.5 million Toyota hybrid vehicles in North America (and well over 2 million hybrids total, including Toyota and other brands). Even though these numbers represent perhaps less than 1% of the total North America vehicle population, it’s evident that hybrids are here to stay, and their population will increase. Based on this, it’s time to become familiar with A/C systems in hybrids

Article

Reflashing tips and tricks: Part I

Hyundai Figure 1

Reprogramming is easy if you reflash the same vehicle all day, but it can get difficult if we work on several different makes and models. Here, we are going to cover how to reflash a selection of examples, using specific tools.

Article

Specialty services: Add-on revenue producers

Specialty services: Add-on revenue producers

In addition to the daily repair workload required to address customer repair and drivability concerns, there is a host of “additional services” that you’re able to provide, things that you may not have previously considered.

Article

Noise/vibration/harshness: Chasing the irritant gremlins

The majority of customers expect a smooth, quiet ride. When noise, vibration or harshness issues...

A host of various noise and vibration issues normally exist during the operation of any vehicle. However, when levels of these factors become noticeable to the customer, he or she may perceive any annoying noises and/or vibrations as problems. NVH (noise, vibration and harshness) is the commonly used term used when discussing these conditions.

Article

Advanced air-fuel and oxygen sensor diagnosis

Figure 1: When the air-fuel sensor detects rich exhaust, it reports this to the PCM which then...

Not long ago, Auto Service Professional covered all of the basics concerning how to diagnose common oxygen and air-fuel sensor codes (see the March/April 2012 issue). This time, we are going to discuss more advanced sensor diagnosis so you can catch those really tough problems that are not simply a matter of checking the heater circuit and having a specification.

Article

Maximizing your smoke machine: Smoke ’em if you got ’em

Today’s smoke machines are incredibly compact, easy to use and offer a wide variety of system tests.

A smoke machine can be used in virtually any low-pressure vehicle system for the purpose of locating leaks, including EVAP, intake/induction system, oil, EGR, engine vacuum, exhaust, coolant (radiator, water pump, hoses, etc.), HVAC, a variety of gasketed areas, engine blocks, worn throttle shafts, diaphragms, intercooler, turbocharger, idle motors and solenoids, under-dash leaks and even vehicle body wind/water leaks.

Article

Oil change intervals

Oil change intervals

I am not alone when I say that I’m sick and tired of “news reporters” claiming that the automotive service industry is taking unfair advantage of the unwitting consumer.