Surely a hard tap is a knock?

It hasn't moved from the driveway yet due to no MOT or tax. The 'noise' only starts at 90+ on the temp gauge though, if it was a valve would be constant. Would also think a tappet would be constant?


It hasn't moved from the driveway yet due to no MOT or tax. The 'noise' only starts at 90+ on the temp gauge though, if it was a valve would be constant. Would also think a tappet would be constant?