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PSA: The Right (and Wrong) Ways to Handle Iridium Spark Plugs

For the vast majority of vehicles on the road, swapping out spark plugs is gravy work. Yoink the old plugs, make sure the replacements meet the necessary gap spec, install the new plugs, and button up the ignition system. You’re in and out of there in no time, right?...

Tool Review: Permatex 25240 Thread Locker

Disclaimer: This chemical was purchased at full retail price at the expense of the author, with no compensation from the retailer or manufacturer to write about the item.Be honest: do you always check the manual for the correct grade of factory-recommended sealant on...

Try Doing It the Wrong Way

Today’s article is composed of two quick tips that are distinct and different, but interrelated because they’re used on the same items: the humble fasteners we remove and install hundreds of times daily. These tips are both geared to newer techs since we all must find...

Modern Power Window Switches: Smarter than You’d Think

When was the last time you rolled down the power windows in an older car or truck? I’m talking at least pre-2000. The older, the better. As a passenger, you’ll find that every door has a mix of buttons, switches, locks, and handles to mess around with, plus maybe a...

It’s All About the Process

Man, it feels like just yesterday you graduated with that Associate’s in Automotive Tech, but nope, it's been three months already, and you've landed a solid job at ABC Auto Repair back in your hometown. The boss has been taking it easy on you, dishing out a bunch of...

Dealing with “System Lean” DTCs

The Engine Control Module (ECM) is always keeping an eye on the amount of fuel it is adding to the cylinders, and it'll throw a code when it figures it can't keep the mixture right where it needs to be. You might see codes like "system rich" or "system lean," and they...

Back Away from the Wrenches

Today’s article is more of a philosophical one than a pragmatic one. You see, we’re in the business of buying and reselling auto parts, servicing automobiles, and getting paid for our efforts. But as automotive professionals, we merely delay the inevitable. The...

Dealing with “System Lean” DTCs

Dealing with “System Lean” DTCs

by | Feb 3, 2026

The Engine Control Module (ECM) is always keeping an eye on the amount of fuel it is adding to the cylinders, and it’ll throw a code when it figures it can’t keep the mixture right where it needs to be. You might see codes like “system rich” or...
The Misunderstood Ford 6.0

The Misunderstood Ford 6.0

by | Jan 27, 2026

My wife and I are RVers and started our RV adventure with a 23’ toy hauler. When we started, we pulled the trailer with a Ram 1500 equipped with the 5.7-liter Hemi engine, and for most outings, it handled the task just fine. It wasn’t until we took a trip to the North...
Power and Ground Testing on an Electrical Circuit

Power and Ground Testing on an Electrical Circuit

by | Jan 20, 2026

I’ll never forget this one day in the shop. One of the other techs was wrestling with an electrical gremlin and swung by my bay for some backup. “Pete, mind giving me a hand? I’ve got this GMC pickup with a blower motor that’s running super...
ADAS Repairs: Why Calibration Is A Must

ADAS Repairs: Why Calibration Is A Must

by | Jan 15, 2026

Modern vehicles equipped with Advanced Driver Assistance Systems (ADAS) are truly marvels of engineering. What started as high-end options found only on luxury cars can now appear as standard equipment on some econo-boxes (e.g., blind spot detection). That means it is...
Lash is Cash

Lash is Cash

by | Dec 23, 2025

There are some items on a maintenance checklist that neither mechanics nor writers will recommend. Sometimes that’s because a visual inspection or assessment seems at odds with an overly rigorous service schedule. Sometimes, the condition of the car or the financial...
Clean It or Crack It

Clean It or Crack It

by | Dec 18, 2025

Picture this: You’re installing a cylinder head, you’re tightening a head bolt to spec, and you’re feeling good—until crack! The sound every wrench-turner dreads hearing: your engine block saying goodbye to its structural integrity. So, what happened? Chances are, a...