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Hot Off the Press

Watch This Video on the Inventor Who Put Lead in Gasoline

Recently, I went down an internet rabbit hole about why gasoline once had lead in it and how it got removed. In my searches, I found this video on inventor Thomas Midgley Jr., who not only invented leaded gasoline to combat engine knocking but also synthesized...

Stress Test Vehicle Grounds

Pop quiz, no cheating: how many amps does the ground side of any circuit conduct? If you said, “As many as the hot side,” get yourself a gold star and skip this article. For the rest of us who weren’t born innately knowing the answer to that question, stick with me...

The Tightwad’s Way To Install Any Wheel Bearing Race

I don’t own a bearing race driver kit, and I haven’t in 20 years of fixing stuff. I also refuse to use sockets to drive a race. I learned a method a long time ago I’ll pass along to you newer techs: I use the race I’m replacing. I primarily have used this trick when...

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...

Hybrid A/C Compressor Oil-ASE Practice Question (VIDEO)

On a hybrid vehicle’s air conditioning system that utilizes a high voltage electrical compressor, can only the oil specified by the vehicle manufacturer should be used in the compressor or is PAG oil is acceptable for use in an electric vehicle’s compressor?

HOT OFF THE PRESS

Troubleshooting Fuel Trim–ASE Practice Questions (VIDEO)

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.

ABOUT SHOP PRESS

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.

Do I Need a Tune-up?

Do I Need a Tune-up?

When a customer rolls into your shop and asks for a “tune-up,” what’s your first reaction?

Check Engine Light On?

Check Engine Light On?

Grab a generic OBD-II scan tool and take these first steps to turn it off and keep it off.

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SHOP STUFF

Auto care news and advice you can use.

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