Hi everyone, got a Xsara Picasso 1.6 hdi and during a service found the timing belt had been shredding itself against the engine mount. Fitted new belts, tensioners, idler and water pump then watched the new belt run for a while and after a minute it started to drift off to create exactly the same problem. I put a straight edge on the sprockets and no surprise there's only three points of contact between the cam and fuel sprocket edges.
My hunch is the cam sprocket is to blame as the centre bolt seems a bit eccentric but I've called it a day for today so not investigated any further. I'm not entirely sure where the fault is and have no idea what can be done in terms of correction, anyone had to deal with sprocket alignment on this engine? Thanks for any help.