Sine you were involved in R&D of TS, maybe you know the answer. Lots of Alfa mechanics I have spoken with, do not know the answer.
Why a lots of 2.0 TS tend to knock/ping (I can decribe this sound as a valves knocking) under heavy load as soon as engine oil gets hot (more than 100 degrees).
Primarly this sound can be heared on low revs, and when gas pedal is pressed more it disappear, but under heavy load it will not disappear, you have to stop, and restart the engine, and sometimes this does not help (generaly simptoms are worse when air temperature is high, egine is hot, and car is going uphill).
Connecting a car to diagnostics shows no problems.
Last edited by Boris; 15-07-10 at 12:23.