I can get a refurbished injector for £80 and I think it is worth the gamble as the rest of the car is perfect and I have had no issues in nearly five years of owning it. However, the car starts on the button and runs fine when warm, it is just the smoke and rough running on startup. Having searched the internet it would appear the high pressure fuel pump on these is prone to bearing failure at 100K miles (mine has 101K on the clock) and causes particles of metal to get into the fuel system and damage the injectors. I have done a leak off test and it has highlighted that injector 4 (furthest right facing the engine) has an issue and is returning way more diesel than the other three. For a while now there has been a big puff of smoke on start up and slightly rough running for about 30 seconds. ![]() I have a 2007 Renault Megane with the 1.5 DCi 86 engine which runs Delphi fuel injection.
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