Any update @FormulaBob? Experiencing similar issue on a European my23 gt4…..

 

Does the noise go away after the engine is warm and had been running 10-20 min?

 

I don't recall having ever watched those videos prior to today. But I can tell you that my 718 Spyder makes the exact same noises at the exact same RPMs. I can hear it go away, too, at the exact same RPMs as yours. Annoying as hell. Only thing I dislike about the car. And because the dealer was able to put it side by side with a GT4 that made the same sounds, it became NORMAL. Tell me what it is and I might believe you. Until then, you're (Porsche dealers) just guessing and trying to make us go away. Shaking my head.

 

Didn't we all decide (over the last how many pages of discussion) that it was the piezo fuel injectors opening and closing?

 

It’s definitely not that. They fire up to 5 times per injection cycle. First time use by Porsche.

Likely one of the solenoid high pressure pumps cycling.

 

No update on Porsche end. Car goes to dealer in two weeks for one year oil change and my request that zone rep listen with me to the noise (not confirmed). It is not getting better with time and seems to be worse when warm. As mentioned above in post #255, many other manufacturers put noise shielding around their high pressure fuel pump(s). The noise originates in the hp fuel pump, probably from a solenoid valve, and in the Porsche case is amplified by the way the hpp and fuel rail are mounted on the engine. The fact that some of our cars have minimal noise and some have significant noise points to a design and/or manufacturing problem.

I have been told that Lexus routinely replaces hp fuel pumps when owners complain about noise. So why are Porsche dealers telling us the noise is normal, and since the pumps pump the proper amount of fuel, replacement is not approved. Perhaps it is because hpp replacement appears to require engine removal from our cars and removal of the intake manifold. At current flat rates, that is a lot of labor $$ and somewhere near $1,500 in parts.

Hopefully, I can report some good news in a few weeks.

 

I don't think it is the injectors because they're operating all the time that the engine is running. This noise goes away completely under certain throttle and RPM conditions. Mine is silent between 1400-1900 or so RPM. As soon as you approach 2K the noise turns on as if you flipped a switch. Not a gradual thing. Immediate.

 

Does it sound like this and speed up with engine RPM?

 

Definitely not.

 

That’s great. Look forward to hearing what they say. Really keen to get this sorted!

 

I would be thrilled to be able to do away with this sound. It really bothers me because I cannot stop listening for it. And if some cars don't do it (as has been reported), we all deserve the same thing. A fix. But I will admit that I hear a lot of engines making the same sound, including several 911's, so it's likely not a 4.0L thing but something common to more powerplants.

 

All the 991.2 turbo engines that replaced the 9A1 N/A engine of the 991.1 and then used again on the 992 make the same noise...it's the same Engine sans turbos and bored to 4.0L on the 982 9A2 Evo engine
I had a 718 GT4 and I totally understand you...I also hated the noise and I immediately complained when the car was delivered as it sounded awful, not to mention a really bad exhaust note.
At the end the dealer couldn't do anything and that it was a normal noise. I have several friends with GT4s and Spyders and they all make the noise.
I associate that ticking noise with an engine needing a short block rebuild......I now have a GT4RS. They are noisy too but not the same noise and you can actually live with it.

 

Hi formulabob. Did you get any good news in the end or still no solutions?

 

Car is at dealer now. I am not expecting any resolution, just another TADTS (they all do that sir). BTW, I have seen a new Spyder on which the bothersome noise was almost imperceptible at a KK two months ago. It is too bad that the fuel pumps are not accessible to allow taking a vibration measurement/signal on the pumps and fuel rails and comparing to the noise we hear. Of course, Porsche engineers should have done that already.

Will update whenever I get the car back. If no resolution and no face-to-face with zone rep then will open a case with PCNA. If case doesn’t yield a positive outcome, then a letter to the top of the Porsche house. If that doesn’t work, next step is TBD.

 

thanks Bob. Mine is booked in next month but not expecting to get much other than the normal “it’s normal”. Frustrating!!