So I am trying to chase down where it is coming from, I have a mechanics stethoscope to pinpoint the location and it appears to be coming from the fuel injectors. Everywhere I checked on the engine casing is normal although the clutch is noisy. When I put it on the throttle body ( engine side ) it is where the knock seems to be coming from. I was surprised how noisy the injectors are with the scope against them. Is it possible the injectors are the source oh wise ones?