Mechanic Ángel Gaitán shows how to fix a common problem in 5 minutes: "The same thing is probably happening to your car."

"The same thing is probably happening to your car, especially if it's a gasoline-powered car or a little older," Ángel says, showing a small cracked pipe. The vehicle, with more than 330,000 kilometers on the clock, was jerking, which, according to the mechanic, was caused by a leak in the brake booster system.

The fault was located in a tube that connects the brake booster to the air intake. This tube, which due to its age already showed cracks that were imperceptible to the naked eye, was allowing uncontrolled air to enter the system.

"These pipes are many years old, and often you can't see them," explains the mechanic as he points to the damaged component.

Although he temporarily solved the problem with a splice so he could move the car within the workshop, he clarifies that it would be unprofessional to leave it like that for driving: "It wouldn't be right as a professional to do that botched job," he emphasizes, stressing that the replacement part still had to be obtained.

He took the opportunity to explain in detail how the air intake system works in combustion engines. From the air filter to the throttle valve controlled by the ECU, the entire process is designed to precisely measure and regulate the amount of air entering the cylinders.

"If we have a broken intake, the engine mixes air and gasoline poorly, misfiring, and jerking and unstable idling occur," he explains. This was precisely the cause of the Audi TT's malfunction.

Finally, Ángel recommends checking the vacuum tubes on older cars, especially gasoline models, as a simple crack can cause significant performance issues. "I'd probably tell you that if this is happening to you on an older gasoline car, you often have a broken or cracked tube with pores."