MajorCommonEngine

Renault Clio: K9K 1.5 dCi Common Rail Injector Failure

K9K 1.5 dCi Common Rail Injector Failure is a common engine fault on the Renault Clio on the 2005–2019 cars, and we rate it major. Putting it right costs $800 to $2,800 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 15 documented faults on the Renault Clio.

Vehicle: Renault Clio
Engine: 1.5L
Years: 2005–2019
Fuel: diesel
System: Engine

This page covers the Renault Clio as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Renault Clio faults15 documented faults on this model

What you are looking at

What goes wrong

The Bosch/Delphi common rail injectors on the K9K 1.5 dCi engine are a documented weak point across the platform. High-pressure fuel contamination, copper seat erosion, and injector tip wear cause irregular fuel delivery, fuel return leaks, and hard restarting when hot. Multiple injectors often fail in sequence rather than individually, and the failure mode is recognised widely by Renault specialists and parts suppliers as a structural design weakness rather than isolated component failure.

What you would notice

Hard or extended cranking when hot
Metallic knocking at idle that clears with revs
Black smoke from exhaust under acceleration
Check Injection warning light illuminated

How to check it

Where to look. Top of engine, mounted on common rail fuel rail

Cold-start and warm the engine fully, then listen for metallic tapping at idle. Check for black exhaust smoke under load. Ask for written service history including fuel filter change intervals — blocked fuel filter accelerates injector wear. If a workshop inspection is possible: Connect diagnostic scanner and read injector balance rates and any P0200-P0206 fault codes.

Parts involved: Fuel rail, Fuel injector.

What it costs to put right

$800 to $2,800 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Have the injectors been tested or replaced, and at what mileage?”
“Has a check engine or check injection warning ever appeared?”
“Is the car used mainly for short city trips or regular highway driving?”

Now check the Renault Clio you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Renault Clio buyer questions

Is k9k 1.5 dci common rail injector failure serious on a Renault Clio?

We rate it major and common on the Renault Clio. The Bosch/Delphi common rail injectors on the K9K 1.5 dCi engine are a documented weak point across the platform. High-pressure fuel contamination, copper seat erosion, and injector tip wear cause irregular fuel delivery, fuel return leaks, and hard restarting when hot. Multiple injectors often fail in sequence rather than individually, and the failure mode is recognised widely by Renault specialists and parts suppliers as a structural design weakness rather than isolated component failure.

How much does it cost to fix on a Renault Clio?

$800 to $2,800 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Renault Clio years are affected?

Our research records this fault on the 2005–2019 Renault Clio. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.