Illinois man who bought cheap Porsche Cayenne Turbo with weird engine noise isn't giving up on fixing it
- This Illinois man bought a Porsche Cayenne Turbo with a strange engine
- It was making a weird ‘slapping’ noise, and he did an experiment
- He used cheap engine additives to see if it helped
Published on May 16, 2025 at 8:45 PM (UTC+4)
by Daisy Edwards
Last updated on May 16, 2025 at 8:45 PM (UTC+4)
Edited by
Emma Matthews
This Illinois man bought a cheap Porsche Cayenne Turbo, suffering from a very weird engine noise, but he’s not giving up on it just yet.
He was drawn to it and probably spent a bit too much money on it, thanks to its stunning blue color. And that’s even though he knew about the engine issues.
He decided to turn the relatively expensive car into an experiment to see if cheap engine additives actually restore a failing engine with low compression.
The outcome of his experiment was surprising to everyone. Not least his autoshop-owning friend, who was shocked the car hadn’t blown up.
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This supercar very quickly became an experiment because of the sound of its engine and the bizarre engine slap noise it made.
After investigating the 2008 Porsche Cayenne Turbo he had bought mostly for its lovely blue color, he realized that the cylinder had scoring and the piston made a weird ‘slapping’ noise.
The Porsche had been inexpensive, so he decided to turn it into an experiment to see whether cheap engine additives would help or hinder it.
First, he began with leak-down tests. They revealed a huge amount of pressure loss in some cylinders, far past acceptable limits.
The YouTuber from LegitStreetCars cleaned the valves and did some basic repairs, and compression improved significantly in some cylinders.
He found a boost issue due to a loose throttle body. Once this was fixed, the boost pressure returned to normal.
After these somewhat MacGuyver-esque repairs, the engine ran surprisingly well, and he began to drive the car with minimal issues.
After 500 miles, he took the car to his friend at a garage. They couldn’t believe that his crazy repairs had worked and the Porsche hadn’t blown up.
Long may the not-blowing-up continue!
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Daisy Edwards is a Content Writer at supercarblondie.com. Daisy has more than five years’ experience as a qualified journalist, having graduated with a History and Journalism degree from Goldsmiths, University of London and a dissertation in vintage electric vehicles. Daisy specializes in writing about cars, EVs, tech and luxury lifestyle. When she's not writing, she's at a country music concert or working on one of her many unfinished craft projects.
