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.

From the creative minds at:

FEATURE STORY

Hot Off the Press

Texas nonprofit helps low-income vehicle owners afford auto repairs

At any given time, about 1 in 5 vehicle owners are delaying some sort of auto repair, with the most common reason being that they can’t afford it, according to the Auto Care Association Factbook. All this deferred work adds up to an estimated $31 billion that drivers...

A day in the life of a service writer (VIDEO)

The hardest job in an automotive shop might just be that of the service writer. Taking heat from the boss, the techs, and the customers isn't easy. That the role is for dynamic individuals becomes apparent quickly when considering the tasks that make up the job. Watch...

Serviceability Hall of Shame: Ford Taurus Spring Shields

The Serviceability Hall Of Shame was born from all the times we’ve looked at a vehicle and realized some usually simple task was going to be nightmarish. It is, ultimately, a response and explanation of the inevitable question, “Good Lord, why?!” Today’s entrant isn’t...

January Automotive Horoscopes

Aries: You may not think of some of your repairs as innovative, but a creative fix is a creative fix. Your outlook is out there, and that's OK. Expect to see someone else cribbing your notes but remember to take it as flattery. Not everyone has the same gift of seeing...

It’s totally fine to run your fuel tank down to empty

One of the pieces of automotive wisdom that’s been repeated by publications and mechanics alike for ages is that it’s not good to run a fuel tank below some arbitrary fill point, like a quarter of a tank. At some point, that probably wasn’t bad advice. But today? It’s...

LOF PSA: Don’t forget the lube job

Please forgive me, because I’m about to be a dinosaur and proselytize for a few moments. Many moons ago, I would have customers request an oil change and a lube job. It was so prevalent that the acronym for this, LOF, is still in pretty common use. (That’s “lube, oil,...

Best of Shop Press 2022

Shop Press officially launched in March 2022, at least if you go by the press release. Between then and now, we’ve published well over 100 articles and videos dedicated to auto repair professionals and wrenching enthusiasts. We greatly appreciate everyone who has...

A simple tip for burping a radiator

by | Dec 7, 2021

Ever drain and fill a coolant system and watch the temp gauge spike afterwards? Air trapped in there can cause a car to act like it has a cooling problem. It’s annoying to let the car cool so you can work on it, then re-bleed and possibly still have the same problem.

This minor inconvenience is so prevalent that many cars include a little hole (with a jiggle valve) built into the thermostat housing, which should be the highest point in a cooling system.

Burping (so named because of the noise made by the bubbles of coolant exiting the radiator filler neck) is done with the radiator cap removed on cars without a valve.  You wait for the car to warm up so the thermostat opens, and then the pressure of the expanding coolant being heated drives the air out. Or at least that’s how it’s supposed to work, anyway.

I learned a trick from an old racer that works real well to bleed that rarely leaves me repeating my work.

Thermostat forcibly opened with aspirin

Take a screwdriver and manually open up the thermostat. Wedge an aspirin – the old white kind you can get at the drug store for 97 cents – in between the thermostat frame and the mechanical valve itself. It will keep the thermostat open, allow coolant to flow wide open even in the coldest of temperatures, and will dissolve in fifteen minutes – plenty long enough to get the system purged of air.

Related Articles

Subscribe
Notify of
guest
6 Comments
Newest
Oldest Most Voted
Inline feedback
View all comments
6
0
Click to leave a comment!x
()
x

Get Articles In Your Inbox

Subscribe to receive a monthly email summary of our latest Shop Press stories.

Shop Press

Thanks! You're now subscribed.