Hi Rob , as I have just been rebuilding an engine and wanting to get everything right I have just confronted this issue, The Fiat and Haynes manuals talk about no. 1 being at the rear of the engine so looking into the engine bay you think it is the one at the back which is against all of my instincts. It is only when you look in the timing section that they refer to no, 1 as being the cylinder next to the timing chain
