Hi all, started my 19 QV this morning and had to go and fetch something before driving away. Noticed this loud ticking from the engine and knocking sound from the exhaust. Haven’t been aware of this before but usually don’t exit once started up. Noise had disappeared when I returned from drive. Car has travelled 35,000 k serviced 2k ago. Normal or irregular? Cheers. ( I would post videos but site won’t let me access?)