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Five best car and truck tips from mechanics to non-mechanics (VIDEO)

Description Want to make your vehicle last? Not sure how to talk to a shop about car repairs? Nick and Lemmy offer their five top recommendations for maintaining both your vehicle and your relationship with the auto repair pros you trust to handle maintenance, service...

Pulse width modulation and automotive lighting

I recently was talking to someone about how complex modern systems have gotten, and realized my unwilling conversational victim wasn’t sure why things had gotten so complex and if that was a good thing or not. “Even the lights are difficult!” the exasperated fella...

Another specialty punch

Disclaimer: I purchased these tools at full retail price at my own expense, with no compensation to write about the items.If you read Shop Press regularly, you may be thinking, man, those guys really love punches. You wouldn’t be wrong. We’ve written about big huge...

Rules of the torque wrench, explained

I would bet that you and most other Shop Press readers have a pretty good handle on how to use a torque wrench. You aren’t going to get far in this industry without a proficient understanding of how to employ and care for these precision instruments. And if you’re...

The cars of Stephen King stories: books and film adaptations

Given how often Stephen King references cars in his books, it’s no surprise that he’s owned some classic cars himself, including a Cadillac El Dorado and a Lincoln Continental. But not all of the cars that he features in his books are of the killer variety: sometimes...

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...

Are you servicing your car’s oil correctly?

What are the top two causes of premature engine wear and engine component failure? The first is lack of maintenance, specifically going too long between oil changes. Whether you’re taking care of the family grocery hauler or you do this kind of work for a living, it...

How to get a little more (temporary) performance out of your air impact gun

by | Dec 21, 2023

I would like to start this article off by mentioning that yes, I know air impacts are slowly going out of style—which is exactly why you might want to keep this tip in the back of your head. Parts availability can be a challenge for some old impact wrenches, and even if they can be sourced, it’s often not worth the time it takes to renew the tool. So if you have a get-it gun that’s losing its mojo, there’s a half-baked method you can employ to coax some additional (albeit very temporary) life out of it.

Often impact guns lose efficacy when the rotor vanes wear. They’re really not unlike rotor tip seals in a rotary engine, or piston rings in a standard engine. Rust (from water that your inline filter didn’t catch) and debris in the air get into your gun and slowly wear away the vanes, which are often made of a phenolic polymer and seal against the metal housing. Or in your case, stop sealing.

The solution is a rebuild or a new tool. (Or jacking up the line pressure, but that might be part of what got you into this pickle in the first place.) But that doesn’t help much when you’re trying to nurse your ailing rattle-blaster through one more week of rotations until the nice man on the tool truck arrives at your shop.

So do the same thing we do for an ailing engine that’s getting a wet compression test: throw a shot of oil down the hatch. Skip the air-tool oil; that ain’t gonna help much. You want to shove some thick stuff into the air inlet. I work on a ton of Harley-Davidsons, so SAE 60 or 20W50 is always on the shelf, and that stuff usually bumps the power back up to acceptable levels to get by for a little longer.

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