Hello,

i buyed a used Porsche Panamera GTS before two weeks
Year: 2014
137.000km

and since three days the engine have a very bad sound attached you will find the link to my youtube video please if someone know whats the problem or what i can do let me now i don’t know what i should do.
power loss or something i don’t have everything ok only this sound from the engine is a big problem

https://youtube.com/shorts/eI9PsYnmU5M?feature=share

thanks

That sounds like valvetrain. What were you doing when the sounds started?

I don’t know i was driving normal when i stop i listen this sound

Are you getting a check-engine light or anything? Some on here might say that is "normal DI sound", but my car has the same engine and it's near silent.

No nothing no check engine light nothing same engine Power like before no faults i don’t know whatit can be

Check for a Catalytic Converter "rattle" = (failure).

- I had the same "engine noise" scare - and after flat bedding the car to my dealer they found that my High Milage Panamera 4S's 4.8L engines had one catalytic converter fail internally and rattle.

My car also had no logged error codes / does not burn oil any more when new - the noise issue just pop-ed up and presented itself - especially on cold start and initial low speed / movement of car.

Good luck with your trouble shooting .

**- my Catalytic Converted replacement $t cost is high but is still a lot better than an internal engine problem.

-

Hello Stephen Rom,

but this sound from my car comes from the engine not from somewhere down or under the car ?

Regardless, if it is what I think it is, it's not "engine failure" and most likely will not require replacement. The caveat being if there's metal shavings in your oil. If there are, all bets are off.

Hello but i don’t know what i should do, today i was at a porsche garage they checked the car everything ok with the obd on porsche everything ok no failures so they wanted that i let my car there to dissambley all the engine and look whats the problem and if he have to change the cylinder it will cost me around 20k€
but i don’t think that’s some big failure because the car have the same power no oil loss nothing only this noise