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Brake booster valve – ASE practice questions (VIDEO)

Description A customer states the brake pedal falls slightly when the brakes are applied while starting the engine. Technician A says that a faulty brake booster check valve may be to blame. Technician B says this can be caused by a leaking brake booster diaphragm....

The final days (and cars) of AMC

In the last days of AMC, two employees brought a video camera into the Kenosha, Wisconsin plant to document the end of an era. Billy and Danny take a thorough tour of the old AMC buildings and production line, which was producing its last L-body Plymouth Horizons and...

What is a core charge?

The article title is a question I asked when I was a young counterman, and most of you oldtimer mechanics and parts people of course know the story: the core charge is a way to be sure the smoked part makes its way back to the parts counter. A core charge is a deposit...

How do you inspect a serpentine belt for wear?

Performing a visual inspection of a car part is usually the first step in assessing its condition. In the case of the serpentine belt, any sign of physical damage to the belt means the belt should be replaced, and may indicate the need to more closely inspect the...

The importance of testing engine coolant (VIDEO)

How to test for blown fuses in a car or truck | Fast and easy methodDescription Dorman Training Center instructor Pete Meier explains why you should be testing engine coolant on vehicles in your bay. With a simple test strip, you can quickly check the coolant's health...

How to use a refractometer

I used to feel real dumb when I didn’t know what a tool was. After fixing things for a bit, I have come to learn that there are a lot of specialized tools and the only dumb thing is not learning about them. So when Dorman Trainer Pete Meier showed up recently with a...

Transfer cases: Married vs. divorced FAQ (VIDEO)

There is a paucity of divorced transfer cases fitted to vehicles traversing the roadways in 2024. In fact, some technicians—especially younger ones—aren’t even aware a setup beyond the married arrangement exists. If you’re unfamiliar with them, our own Technical...

What are the sockets and wrenches you can do without?

What are the sockets and wrenches you can do without?

I was standing in the Dorman Proving Grounds the other day talking to Nick and Luke, both of whom wrench and appear in our videos. We got on the topic of sockets and wrenches we don’t use much. “20 millimeter,” Luke said. Nick’s 9mm socket wasn’t getting much use....
Seven tips to help you pass your ASE exams

Seven tips to help you pass your ASE exams

If you’re reading this, you know what the ASE exams are, so I won’t bore you with a recap. I took a few ASE exams recently. Some were recertification exams and some were fresh certifications, but boy, hasn’t this process changed? When I first started taking these...
What are your least favorite repair jobs? (VIDEO)

What are your least favorite repair jobs? (VIDEO)

What are your least favorite repair jobs? (VIDEO) Description Life can’t all be brake jobs and pre-delivery inspections. Beating time is the name of the game, but it doesn’t always work out. Watch as a few Dorman mechanics talk about the jobs that make...
A few tips for tow truck operators

A few tips for tow truck operators

At one point in my automotive career, I ran a rollback wrecker.  Those days are getting smaller in my rearview mirror and the game has changed over the years, but I learned a lot of things that I wish someone had just told me. My recovery work is limited to salvage...