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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...

Brake drum – ASE practice questions (VIDEO)

Brake drum – ASE practice questions (VIDEO)

by | Sep 10, 2024

Brake drum – ASE practice questions (VIDEO) Description When checking a brake drum during service, all the following should be checked EXCEPT: A) Diameter B) Out-of-roundness C) Minimum thickness D) Taper wear More ASE Practice Questions Why don’t you keep...
Noisy disc brakes – ASE practice questions (VIDEO)

Noisy disc brakes – ASE practice questions (VIDEO)

by | Aug 27, 2024

Noisy disc brakes – ASE practice questions (VIDEO) How to test for blown fuses in a car or truck | Fast and easy method Description All of the following could cause noisy disc brake operation EXCEPT: A) Glazed pads B) Grease contamination on the pads C) Broken...