I have a 2011 1.6 valvematic with 50k and full Toyota service history. Over the past couple of months I have noticed a louder ticking/tapping noise from the engine! I checked the alternator and valve cover with a long screw driver for noise and I think it's coming from engine rather than the ancillaries!
I'm now hearing more of this problem from other valvematic auris owners! Someone mentioned a vacuum pump on the camshaft! If it turns out to be a common problem would it be up to Toyota to fix, like they with the head gasket issue on the auris 180's?
More to the point, can anyone confirm what the problem is?
Thanks