Berlingo

Hi all.
This is my little baby that broke down last week,it’s running but sounds like it’s only running on 3 cylinders,I have checked what I can and no fault codes present,can’t figure it out,maybe someone could fix or good for spares,I have spent a fortune on this van for the past 5 years.
New turbo less than a year ago,new oem alternator 2 years ago,new starter 2 years ago,currently 197k miles,roof rack,roof rails,rear MAD heavy duty suspension with a 2 inch lift in the rear(worth €650)can be put on any model berlingo up to 2018.
This van was serviced my myself every 6000miles.
Bad points: it’s 2009,cam cover leaking which it has been for 3 years and obviously not running correctly.
Doe out in June 2026.
Timing belt done at 135k miles
I have a spare timing belt kit,new shock absorbers also with the van,2 x spare second hand injectors and few other bits.
This was my baby for 5 years and love it but just don’t have the time to fix it or see what’s wrong.
Would love to keep it if I had the room
Van is priced to sell.
Thanks for looking