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Interpreting Compression Tests–ASE Practice Questions (VIDEO)

Description Technician A has just completed a running compression test using a mechanical compression gauge. Technician B says that the test is used to check the volumetric efficiency of the engine. Technician A says that the higher-than-expected readings indicate a...

Do I Need a Tune-up?

If you’re like me, you might cringe a little. More often than not, they’re hoping this magical procedure will fix some mysterious issue with their car. But let’s break it down: what is a tune-up, anyway? Most dictionaries describe a tune-up as “a general adjustment to...

PSA: Be Safe With Brake Cleaner

If you work in a shop (and if you’re reading this, chances are you do), you are undoubtedly familiar with brake cleaner. And, if you know the scent of brake cleaner, you probably know that using it is not great for your health if it comes in contact with your skin,...

Compression Testing | ASE Practice Questions (VIDEO)

Description Technician A has just completed a dry compression test of a four-cylinder engine. 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? A)...

When a Voltmeter Isn’t Enough (Video)

Description With the variety of electronically controlled systems on a modern automobile, the days when a test light or simple voltmeter was enough to diagnose problems are long gone. Using a digital storage oscilloscope (DSO) can make troubleshooting faster and more...

P0420/P0430—The #1 DTC in the Country

DTCs (Diagnostic Trouble Codes) P0420 and P0430 are generic industry codes and part of the OBD-II standards. The descriptor labels the code(s) “Catalytic Converter Efficiency Below Threshold – Bank 1 (or 2)”. And the number one part sold to repair this problem is a...

Shop Profile: Hansville Repair

Shop Profile: Hansville Repair

It’s a small village, but Hansville, Washington makes a grand first impression. As Hansville Road crests a hill and descends into town, a breathtaking panorama unfolds—Puget Sound, Whidbey Island, and distant Mount Baker stretched across the windshield like a...
Shop Profile: Locked N Loaded 4×4

Shop Profile: Locked N Loaded 4×4

I’ve owned two Jeeps–the 1973 Super Jeep CJ-5 featured in a previous Shop Press article, and a 2010 Wrangler Sahara. The reliability and my enjoyment of the former wasn’t “super” in any way despite American Motors’ best efforts at model name puffery, and the latter...
Shop Profile: Top Auto Center

Shop Profile: Top Auto Center

Like a clueless lumberjack who couldn’t see the forest for the trees, it took me longer than it should have to figure out the secret to Top Auto Center’s success. It was hiding in plain sight and sound in the overflowing lot of cars and trucks awaiting service, sale...
Shop Profile: DeLorean Midwest

Shop Profile: DeLorean Midwest

As a Gen Xer, I have a soft spot for the “Back to the Future” movies and, of course, the DMC DeLorean used in those movies. Then I learned of DeLorean Midwest, a shop based outside Chicago that specializes in—you guessed it—DeLoreans. Watch this video profile of...
New to the team but not new to the business (VIDEO)

New to the team but not new to the business (VIDEO)

Greetings, Shop Press readers! I joined the Dorman team earlier this year and you may have already noticed a few posts with my name on them. Maybe you’re even asking yourself “What makes this guy qualified to offer an opinion or try to tell me how to work on cars?”...