Engine running rough

Will put together responses to your questions today and send them through.

The noise is coming from the engine. Please find attached two sound clips. One was from the engine and the other was from the cabin of the car from beneath the steering column.

The sound initially was a moderate to loud clunking sound. Like something was knocking at a constant rate. Then the knocking would increase when revs increased.

Yesterday, in denial that there is a problem with my timing chain, I engaged a local garage to carry out an inspection of the undercarriage of the vehicle. To assess if there was something that was knocking the exhaust and sending the sound to the engine. That hypothesis was dismissed.

However, the mechanic in-charge recommended I purchase an oil treatment (Bardahl Oil Treatment 2). I purchased a can and poured it into the engine. Drove back home and the sound subsided. Today, I purchased another can. The engine has toned down significantly. Mechanic in-charge today mentioned that there could be a blockage preventing oil from getting to the timing chain. He suggested I continue to travel and monitor the changes. Then to use the additive again at the next service.

However, I am still concerned as to the status of the car. I regularly service my car. But hearing mechanics suggest that I haven't taken care of my car makes me question their professional opinion.

The problem has been resolved.

The diagnosis was that the alternator had failed. Pulley and Rotor had a lot of play. That was sending vibrations into the engine. The alternator was repaired and fitted.

The car is purring better than before. Just a slight ticking sound while on the Highway. It’s negligible but sounds like a small stone caught in the threads of the tire. Hopefully it will become clear what it is.