it does not sound like a light injector tick, more of a knock, only happens when on tick-over around 800rpm and when car is up to temp, when 1st start and cold it purrrrs like a cat!!, the car is an auto-tiptronic, if its a mechanical problem sureley it would happen when i 1st start the car and happen all the time,, im gonna change the oil to a higher viscosity to see what happens!!
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