Citroen C5 Fuel Injectors

Petrol injectors for the C2 and C3 1.4 16V start around R450, with aftermarket units around R1,299 and performance units at R3,050 to R3,100. Used sets of four for the C3, Xsara and C5 start from R499, which on an older petrol car is often the sensible buy. Diesel common-rail injectors are a different order of cost entirely. Send the VIN and engine code for an exact quote.

Rough idle, a misfire on one cylinder, black smoke on a diesel, a fuel smell under the bonnet, hard starting and P030x codes. The 1.6 HDi injectors have a well-known failure pattern, and the good news is that it is properly diagnosable rather than a matter of opinion — a leak-back test measures how much fuel each injector returns to the tank, and the offending one stands out immediately. Insist on that test before anyone replaces a set.

From R450 an injector on a C2 or C3 1.4 16V up to several thousand each for an HDi unit. Labour is typically two to three hours, plus ECU coding on the diesels. On a petrol engine it is generally worth doing all four together, because they have aged identically and a single new injector flowing differently to three old ones gives you an uneven engine. Quote per set rather than per part.

On petrol port injectors, yes — ultrasonic cleaning and flow testing restores them properly, provided the nozzle itself is not damaged, and specialists in our network offer a clean-and-test service that reports the flow figures back to you. On HDi diesel injectors the answer is usually no: the common failures there are internal leakage past worn clearances and a needle sticking in its bore, and neither is a deposit problem that cleaning can address.

Yes, always. Every HDi injector is individually flow-tested at manufacture and carries a calibration code laser-etched onto its body, and that code has to be entered into the ECU against the cylinder it is fitted to. Skip it and the ECU fuels on the previous injector's figures — the engine runs rough, smokes and can drop into limp mode. Any Citroen specialist with the correct diagnostic software handles this as part of the job.