Electronic fault on an injector wouldnt likely be cause with filling up with laundered deisel or Red diesel etc...a mechanical fault could be cause by filling with petrol but normally it would get the fuel pump first before the injectors give out...I asume they replaced the fuel filter as standard precaution after the injector replacement..if not? might be worth doing.i dont see why the other 2 would need done too..if the two faulty ones have been replaced and the car runs fine...you could of course use a good quality diesel injector cleaner if required..but you have to remember the diesel has its own lubrication too..albiet avoid supermarket diesel and try higher premium diesel for the time being....I do hope this helps..If you require to ask anything further then please continue....If not however please dont forget to leave a rating before you log out
Hi..there sorry for the delay..
Filters can be quite a common issue on the HDI's and are normally a routine replacement during a yearly service..of course if they become blocked or restrict fuel flow thus the ECU sees this as fuel pressure problem..hence you get cutting out or starting issues or generally poor responce from the engine...so in what you have done upto this point with code clearing and fuel filter change with genuine one and additive plus the test drive and re test..id say that would generally be the best first step in trying to rectify the problem,i dont really see an issue in whats been done upto now....that being said depends exactly what the fault codes where which would of been interesting to know....Nevertheless if it hasnt resurfaced ? the problem..then it may well of been a bad filter in that case....
No problem..glad to help..but should you need anything further advice etc..then just ask..many thanks for rating! :)