Hello (Before I start I have searched the sticky threads but I am still confused) 1979 2L Bay Window I just replaced my pushrod tube seals and thought I would adjust the valve clearance. From what I gather on this forum to find TDC you line up the notch on the fan pulley to a mark at around 11 oclock on a piece of metal that is bolted between the plastic fan gaurd mesh and the block see photo. When its lined up as in photo the distributer is pointing at the notch in the distributor housing On all the Youtube videos which are American they say line up the notch on the pulley to the centre line or join line of the motor at 12 oclock to find TDC. The reason I am asking is that my car was running ok before I adjusted the valves using the ll oclock mark. after adjusting the the valve clearance the car wont Idle. The car runs ok but doesnt idle properly. Would I just need to adjust the idle cable? or have I done it to the wrong mark ?