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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.

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Engine knock – ASE practice questions (VIDEO)

Description An engine exhibits a knocking noise. During a cylinder power balance test, the noise abates. Technician A says the noise is likely worn big-end bearings on the connecting rod. Technician B says the noise is likely piston slap. Who is correct?More ASE...

“Can I borrow a…”

I recall being very alarmed at how far the door spring traveled. As a teenager in my first job at a dealer, I was working on a small S-10 truck that needed door hinge pin bushings. I levered that door spring out of its perch with a slotted screwdriver like a goon and...

A visit to Elite JDM (VIDEO)

Description Recently we took a trip to Dorman Proving Grounds manager Nick D'Alessio’s personal shop, Elite JDM. While we were there, we shot some videos about some fascinating things we found in his shop. We decided to put those four videos together in a playlist for...

Oil leak – ASE practice questions (VIDEO)

Description Which of the following is LEAST LIKELY to cause an oil leak?A) Torn valve cover gasket B) Worn wrist pin bushings C) Worn rear main seal D) Worn piston ringsMore ASE Practice Questions

Low-mileage JDM automatics: Worthwhile or worthless? (VIDEO)

Description Nick and Lemmy check out a flex plate from an imported Japanese automatic transmission with very few miles under its belt. Even so, Nick explains why nobody really wants these transmissions or parts… and why many of them end up in the scrapyard.

Smarter, not harder: relative compression testing

Smarter, not harder: relative compression testing

Pete Meier, one of our Dorman Training Center instructors, is a pretty smart cat. Since the day I’ve met him, he’s made it clear that the lab scope is one of his favorite tools and that not using one is a mistake. Now I’ve put a lot of miles on my DVOM over the years,...
The TPMS tool that pays for itself

The TPMS tool that pays for itself

If you’re a regular Shop Press reader, you’ve met Chris before. (He’s hilariously identified some dash lights and also is better at identifying auto parts by feel than anyone else I know.) I’ve worked here for a while, but his tenure bests mine. The other day we were...
How do you inspect a serpentine belt for wear?

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...
How to use a refractometer

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...