Car Drives Rough And Engine Light On For Citroen C4 55Reg Hatchback

[paul.h]

It is good to hear your car is getting sorted, you should be able to enjoy it now.

[alfsc4gp]

Glad you got it sorted, but just for future information though...the injectors used on the 1.6 HDi (as with most cars these days with common rail injection systems) are switched on and off with electrical signals from the ECU.  If a wire breaks inside the plug on the injector, that injector will not work, giving you the symptoms of running on three cylinders, and hence you will get more vibration.  I found this out when I managed to get a very low hours 50 hp fuel injected 3 cylinder outboard for my boat, worth over £5000 new, for just £1300...I got it so cheap because the previous owner could not work out why the outboard ran so rough and had so much vibration and he ended up buying a brand new replacement...I subsequently discovered 1 tiny wire had broken off the plug going to one of the injectors...Fixed it and the engine ran perfectly smooth! :)