[v8volvo]

New injectors are nice but usually not cheap. Before spending that kind of money, check out all the basics. If there are questions about cam timing, injection pump timing, valve adjustment, engine compression, fuel system, etc, then get those sorted out before going to the expense of injector work. If the injectors are indeed worn, then a good injector rebuild with new nozzles can do wonders, but if the problem lies elsewhere then fresh injectors won't fix it. Start with a fresh fuel filter and some good fuel additive. If it isn't running right and especially if it is down on power at higher RPM, a new filter may be all it needs.

If you check all that out and do come to the point of needing injector work, any local diesel shop (that works on Bosch equipment) should be able to rehab your injectors for you, and many times they will at least test your existing injectors for free or for a small fee and tell you what kind of shape they're in. You can also buy Bosch rebuilds (can get you part number if you like for these) from many places online. A number of us on here like Monark injector nozzles -- I have posted the part numbers for those on here in the past, look up my posts on that if you would like those. They should be easy to find in the UK and are a higher quality product than the Bosch India nozzles, though those are probably fine too and might be easier to get your hands on. No need to buy from Volvo, they will just be selling a re-boxed Bosch product at a higher price.

Don't forget you'll need six new injector heatshield washers too -- one for each injector, always replace.