I recently bought this car as a runner with vvti issues
With possibly crap oil which had formed sludges and caused a blockage (not 100% sure of degree of damage)
The car currently runs and idles/drives nicely
however, it has started the knock on the vvti cam gear which gets worse if you rev
I have bought new oil control valve but vvti still isnt right
Any advice for a new owner would be appreciated