1.4 TSI CTHA -- Air leaks, how much are you experiencing?

Hello everyone,

I would like to know what the typical values are for leak-off air during idle for a 1.4 TSI CTHA engine (with both a supercharger and a turbocharger).

Depending on the temperature, I'm getting between 2.8 and 4.3 kg/hour, and I now suspect that there are no leaks anywhere. Am I chasing a ghost?

There is no error.

I only replaced the obviously leaky charger hose seal and the faulty recirculation valve, and now I want to check [something]. The values are significant, but I don't notice any real difference right now.

Since gasoline cars aren't really my thing, maybe someone here knows more about them.

Best regards,

Bo.

The check valve on the fuel tank vent (directly connected to the intake manifold after the throttle body) was defective.

Air leakage after replacement remains within a negligible range.

Thank you for the feedback!