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Articles by Mike Mavrigian

Tool Review: MAHLE TechPRO

Tool Review: MAHLE TechPRO

There are scan tools, and then there are scan tools, and then there is MAHLE’s TechPRO. When the company’s ads tout the “game changer” aspect of this system, they were not blowing smoke or employing over-stated hype.
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Don’t Lose Your Cool

Don’t Lose Your Cool

Look around as you drive along your daily route. Chances are, you’ll notice a few late model vehicles that feature curiously small grille areas. You may wonder how the engine maintains proper temperature with such tiny air inlets.
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Electrical Wiring Basics

Electrical Wiring Basics

This article provides a basic primer regarding wire types, gauges and more, for a better understanding of the wires we deal with on a daily basis. Granted, this information may not apply directly to all OEM wire, but it will provide a better understanding of wire basics.
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Making lemonade

Making lemonade

It’s hardly a secret that today’s vehicles feature much more complex systems as compared to the pre-electronic control era. While some curse the increasingly sophisticated management systems that we must deal with, the fact that the use of ever-advancing electronic monitoring and management is here to stay, and it’s only going to increase and expand.
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I hate thieves

I hate thieves

Anyone who works for a living to support themselves and their family, pays their taxes and abides by the law hates a thief. Low-life criminals who take advantage of honest folks are the scum of the earth.
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Engine sealing tips: How to avoid problems from annoying leaks to devastating damage

Engine sealing tips: How to avoid problems from annoying leaks to devastating damage

Sealing an engine involves several concerns, including the containment of combustion pressure, preventing coolant and oil from entering the combustion process, and preventing oil, coolant and vacuum from leaking out of the engine. Theoretically this should be a straightforward process, but if performed incorrectly without attention to detail, problems can range from annoying leaks to devastating internal engine damage.
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Tool review: Innova 4400 coil and module tester

Tool review: Innova 4400 coil and module tester

Is the coil good or bad? During the recent Automotive Aftermarket Parts Expo (AAPEX) Show in Las Vegas, Innova debuted its 4400 Coil and Control Module Tester, a counter-top diagnostic unit ideal for both shops and parts stores. The bench-top tester is designed to safely and easily test the circuitry of conventional ignition coils, coil-on-plug coils (COP), distributorless ignition systems (DIS) and electronic ignition modules (EIM).
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What to look for in outside contractors

What to look for in outside contractors

Your shop may service just about anything under the sun, or you may specialize in specific types of service or certain vehicle makes. Regardless of your shop’s capabilities, there may be times when you need to farm out work to an outside vendor. A good example is engine repair or rebuilding.
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Engine pre-oiling: A critical procedure for any fresh engine

Engine pre-oiling: A critical procedure for any fresh engine

A customer’s engine represents a major investment. Regardless of whether the engine is new (a factory replacement engine), a freshly rebuilt engine, or an engine that has been stored for an extended period, it can be quickly damaged if the bearings and friction related components are not properly lubricated prior to firing the engine for the first time.
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Thread chasing: Restoring male or female fastener threads

Thread chasing: Restoring male or female fastener threads

Whenever you’re faced with dirty or slightly burred female threads (cylinder head threaded holes in a block, spark plug holes in a head, etc.), you may be tempted to grab an appropriate size cutting tap to clean up the threads. The correct choice is to use a “chaser” tap. A cutting tap is designed to create new threads, whereas a chaser tap is designed to clean, re-form and restore existing threads.
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The value of photos

The value of photos

Since it seems as though just about everyone these days has a “smart” phone glued to their head or stashed in their pocket 24 hours a day, we may as well take advantage of the camera feature of these phones while inspecting, diagnosing and repairing customer vehicles.
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