dgian

Hello dear members. I am extremely worried for the following issue. Light white smoke is coming out of my exhaust.
I noticed it a couple of days ago.
I have also checked cooling fluid, oil filler cap and spark plugs for signs of head gasket failure but seems NOT to be a head gasket (as can be seen from the photos).
I also hear little noise from i think the catalytic converter (like its cooling down when the engine is running though...???)
The issue occurs intensely when i press the gas pedal hard.
The car is a W203 Coupe 2.0 petrol (2001) 163bhp M111.955 engine with auto/sequential gearbox.
I really hope its a bad fuel injector and not some kind of a crack on the engine. (this comes from some research i ve done through this forum).
Can you please send your thoughts / estimates about it ?
I really appreciate your time and thank you !

white smoke on the exhaust

clean oil cap - no head gasket issue

clean spark plugs - no white color on the - no head gasket issue

full and clean coolant = no head gasket issue

knocking from this bit even when the engine is running and hot.