Raiters

Hi All, I have a 2009 Honda CRV SE plus 2.2 diesel. This summer it went in to Honda to have a couple of valve seals replaced. Afterwards, there was a juddering under acceleration that got progressively worse in the higher gears between 1500 - 2200 rpm. It is more pronounced accelerating up hills or towing. There are no fault codes. Honda diagnosed a high pressure fuel pump issue. Another garage suggested the front drive shafts which I have had replaced and the rear diff fluid changed, which has made little difference. Fuel economy has improved but is still nowhere where it was and there is increased tyre wear on the front near-side tyre. Another garage has said it could be diesel knock and has suggested getting the injectors examined to see if they have any faults. Oil level warning light came on this evening and the juddering seemed worse Any thoughts anyone? Thanks.