A practical approach to auto repair shop management.
Mastering the Numbers
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HOT OFF THE PRESS
Decreasing Circuit Resistance – ASE Practice Question (VIDEO)
When the resistance of a circuit is decreased and voltage remains constant, what happens to current?
Colin Chapman: The Philosopher of Motion (Part 2)
This British engineer changed racing forever by making cars lighter, not more powerful.
How Often Should You Really Flush Coolant? (VIDEO)
How do you know when it’s time to flush coolant? Technicians may have different views on the subject, but Dorman Training Center instructor Pete Meier explains how using a test strip at every service is a surefire way to get an accurate picture of the coolant’s health.
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Shop Press is the news and idea hub for everything related to working on cars and trucks, focusing on repair, technology, and wrenching lifestyle. With interesting stories from around the world, features on creative people and solutions, and all kinds of other stuff that’ll make you use your mind and your hands.
SHOP STUFF
Auto care news and advice you can use.
It’s That Time of Year to Change Your Clocks. And Your Gasoline Blend.
Did you know that fuel blends change with the seasons in the United States?
PSA: Be Safe With Brake Cleaner
Brake cleaner is loved by techs (for good reason), but make sure you’re taking safety precautions.
Compression Testing | ASE Practice Questions (VIDEO)
All four cylinders are below specification by about the same amount. After performing a wet compression test, values remained unchanged. What could cause this condition?
When a Voltmeter Isn’t Enough (Video)
Many high-end scan tools come with a capable digital storage oscilloscope. Time to put that tool to work.
Which Is Faster: A Spark Plug Firing or a Fuel Injector Spraying? (VIDEO)
Did you know that a modern fuel injection system can fire off multiple sprays in the same time it takes for a spark to jump across a plug?
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SHOP STUFF
Auto care news and advice you can use.
Use the Little Radiator—and Have Customers Do the Same
Cars have a backup cooling system—use it when the situation demands!
Troubleshooting Fuel Trim–ASE Practice Questions (VIDEO)
Technician A and Technician B are discussing ways to use fuel trim as a troubleshooting aid. Technician A says that fuel trims that are correcting for a lean condition at high RPM and load conditions indicates a problem in fuel delivery. Technician B says that this condition is caused by a vacuum leak.
Add or Delete These Simple Parts to Help Customers Save Money
Use it or lose it. Looking for an easy way to win over your customers that they’ll enjoy every time they drive? Look at their vehicles from a hypermiler’s perspective.
Are You Properly Checking Hub Bearings For Wear? (VIDEO)
Pete Meier explains how a dial indicator is necessary for a true wear check.
Efficiency is the Name of the Game
Four proven ways to run a tighter ship at your shop.
VIDEOS
Troubleshooting a “No A/C Compressor Engagement” Fault
Why a compressor clutch doesn’t engage, and tips to find the cause quickly.
Is the Oil Change Interval in a Vehicle’s Owner’s Manual Always the Right Choice? (VIDEO)
Pete Meier explains how vehicle usage and oil/filter quality should affect your maintenance schedules.
Diesel Engines and Racing
You may be surprised at how diesels have made a name for themselves in motorsports.