cam locks, timing help
I've just been atempting a cambelt change but have run into a little problem. I line everything up with TDC and try to put the cam locks on but only one fits correctly, the other seems like the cam is about one maybe two teeth out on the timing belt, thats with the original belt but it doesn't look damaged.
I realise that when I remove the belt this can be adjusted, but does this mean that I've been running the past 5 years with my timing out? It has never appeared to run roughly, although I suppose I wouldn't know any better if it has always been like this and it was only a subtle change. Would it not have made a noticable difference having the timing belt out that much? The only other thing I can think of is that I have the incorrect cam locks but I'm pretty sure they are the right ones . I bought them from shop4parts and I spoke to them so they were aware of which model they were for.
I am a little reluctant to continue with removing the old belt until I know I'm not going to trash my engine.
Btw its a '96 146Ti 2L with alloy rocker cover.
Just an after thought, maybe important. At my last MOT it failed on emissions which was rectified by alfa aid and put down to the lambda sensor which was replaced and then passed the MOT. While alfa aid had it they called me up saying that it was making a bad noise from the engine and were reluctant to take it out for a test drive without my permission, incase it caused serious damage. I said carry on and when I went to collect it, it had stopped making the noise, they seemed to think it might have just been a stuck tappet, I've never heard it make the noise myself but have no reason to doubt them.
Any advice would be welcome.