hello sa lahat!

i've been bothered by the light knocking sound on the engine of my gas fed Fiat Uno for some time now. the noise would just come out a few minutes after warm up and stays there the whole time till i shut off the engine after the ride. there are no changes in terms of performance on the engine that i notice. could it be valve/tappet clearance?

i hope you could me out guys. with the skyrocketing prices of gas today, definitely my 1.0L Uno is worth keeping...

tia

FIATotoy