Went to Irshad, he fixed the tappet clearance, replaced a mount that had broken, replaced the heatercore bypass hose (as the old one was constricted), fixed the brakes.
After the adjustment, the car flies and the tappet noise is no more. It basically feels like new life has brought in to it.
However, just noticed a new issue. When I reached home, opened the bonnet to inspect the engine in like a few seconds the engine shut off (the ac was off). This also happened before I was turning in to my street, which I was holding low idle rpm to be the culprit and the ac was turned on at that moment.
@SER_GTR @capsat @Hassan1991@rajaatta