Re: 156 2.0 ts cambelt change
if the timing has been compromised (which it possibly has slightly but not enough to cause valve/piston contact), and assuming you can not get access to cam locks (which you cant easily), the best way to set the timing is to insert a rod into the spark plug hole on cylinder 1, then rotate the engine using a ratchet on the crankshaft pulley bolt until cylinder 1 is at TDC of the compression stoke. at that point inspect the rockers for cylinder 1, they should be perfectly level (both valves closed), and on cylinder 4 they should be perfectly level too (again both closed). knowing the firing order is 1 3 4 2 you know that the rockers for cylinder 2 should be in the position for exhaust (inlet fully closed exhaust fully open) and on cylinder 3 should be in the positon for inlet (inlet fully open exhaust fuly closed). people may argue that you cant use the rockers for this because there is a good 15degrees of movement where the rocker would be in the fully open position, so you should rotate each camshaft slightly (and carefully) once the belt is removed to watch the rockers move so you make sure you have them in the centre of the 15degrees range. then use the new timing belt's teeth to dictate exactly how each cam pulley will sit. if you dont feel comfortable doing this take it to a garage, any mechanic can do it easily.