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Originally Posted by Thefalls
Do you have a stock or aftermarket header?
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The car is mostly stock with 140000 km, it has done it for at least 100000 km, I first noticed it on the highway while accelerating, but now I can hear it driving in the city while accelerating moderately. I believe it is coming from the side of the engine near the high pressure fuel pump / clutch master cylinder. I have seen some videos of cars with the same noise. It seems to have some connection to the phase change of the VVT? or maybe when the port injection and Direct injection turn on / off?. No one has been able to identify it and fix it. I will try an find the videos with the noise. Everyone knows about the crickets but this sounds worst, but not as bad as "rod knock"