An engine exhibits a knocking noise. During a cylinder power balance test, the noise abates. Which technician has the correct diagnosis?

When the pump automatically shuts off after filling a vehicle’s tank, many people are tempted to add a little more gas. Unfortunately, this can do more harm than good, and the repair bills could add up quickly.
It isn’t the “registration and insurance card box,” after all.
What do you check during drum brake service?
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Auto care news and advice you can use.
Peering inside the inner workings of a deceptively complex tool
Why wouldn’t your shop purchase a few of these?
Two technicians are examining a tapping sound coming from a V6 engine. See who has the correct response about what’s causing the noise.
We’ve all heard the expression “buy once, cry once,” and for some auto parts, those are words of wisdom. For others, it might be an unnecessary expense.
When it is necessary to make your own gaskets, small bolt holes are often the trickiest features to cut.
Are you a wrench and a writer? A counterperson and a communicator? A service writer and a scribe? Get paid to share your experience and expertise with thousands of Shop Press readers.
Auto care news and advice you can use.
Removing old fluid from a vehicle’s braking system can be a time-consuming chore, but it doesn’t need to be.
Which of the following is the most critical result of a rust hole in an exhaust system?
Smartphones, laptops, and computers are normally cleared of all data before selling or discarding to protect personal information.
How many times have you seen a hub dust cap with ugly dents from a sloppy installation? A dust cap tool is a handy tool for installing caps on customer vehicles without damaging the cap’s appearance.
Do your customers know the benefits of magnetic oil drain plugs? Swap out their standard drain plugs to help protect against unnecessary engine damage.
A walk (or drive) through the history of gas and service stations.
Study for your ASE exams with this quick practice question.
Brake fluid can wear out just like any other fluid.