What are the signs to look for in the rear diff giving problems, tightness in reversing on full lock? I've noticed it feels a bit tight but have also heard it is the nature of permant 4x4 that they will be a bit tighter than a non 4x4 vehicle so am hoping it's normal enough at this stage. Re injectors, to check for this am I listening for knocking noise or just a fuel leak. An old 220cdi mercedes I owned had a exhaust leak past one of the injectors and was a pain in th backside to get out never mind fix.
Cheers.
Paul.