Well why isn’t it fixed I’m a psa mechanic with over 20 years experience if your local dealer thinks it needed a chain why wasn’t it done your car would have been covered by the chain recall or at least the extension of coverage out of warranty again if it needed a fuel pump or a head clean these had extended warranty. Yes fault codes would be useful need to remember this ain’t my first rodeo and the faults with this engine are common I would assume at a minimum you have super knock and timing faults as well as mixture related ones.
If faults are hiding they need to check the bsi faults log
Garage C5 X7 3008 XTE
Gone but not forgotten 206 GTI 180 306 XR SED 405 MI16 x2 xzara VTS 406 SV 206 XT Berlingo 2011 (best car ever) 306 HDI 307 XSE HDI touring
Fix it right the first time
If faults are hiding they need to check the bsi faults log
Garage C5 X7 3008 XTE
Gone but not forgotten 206 GTI 180 306 XR SED 405 MI16 x2 xzara VTS 406 SV 206 XT Berlingo 2011 (best car ever) 306 HDI 307 XSE HDI touring
Fix it right the first time