Renault 1.5 dCi (K9K)Fuel pump and high-pressure pump
Delphi high-pressure pump that sheds filings and damages the injection on the 1.5 dCi
Why this rating?
High severity: Risk of a serious engine, turbo or gearbox failure.
Frequency occasional: Caradisiac calls it a proven weakness on the Clio III 70 and 85 hp, but adds that the vast majority of cars escape it, and on the Logan it considers it very rare. fiches-auto identifies it as the most annoying problem of the 65 and the 85/86 hp.[1][2][6]
Symptoms
- Hard or impossible starting when the pump or the injectors seize.[5][7]Hard to start: other faults that cause it · Garage soon
- On the 105 hp with the misaligned pump, Caradisiac describes starting difficulties and even engine failure.[5]
Why it happens
The Delphi high-pressure pump on these versions generates iron filings that contaminate the fuel circuit and usually finish off the injectors.[1][2][6]
On the 1.5 dCi 105 built up to June 2010, a misaligned injection pump could cause starting difficulties or engine failure; Renault opened a workshop action in June 2012.[5]
If it is not repaired: The pump, the injectors and the high-pressure rail have to be replaced, in other words practically the whole injection circuit.[2][6]
Affected cars and years
It mainly affects the lower-output versions with the Delphi system (65, 68/70 and 85/86 hp); on the 75 hp only the first units of the Clio III and Twingo II, and it disappears with the Euro 5 90 hp. fiches-auto also attributes filings problems to the 100 and 105 hp and, more rarely, to the 110 hp. Separately, on the 105 hp up to June 2010 there were misaligned pumps.[1][3][5]
| Version | Years | Codes |
|---|---|---|
| 1.5 dCi Euro 3 (65, 80/82 and 100 hp, 2001-2005) | 2001–2005 | K9K 700K9K 702K9K 704K9K 706K9K 710K9K 722 |
| 1.5 dCi Euro 4 (68/70, 85/86 and 105/106 hp, 2005-2010) | 2005–2010 | K9K 712K9K 714K9K 728K9K 732K9K 764K9K 766K9K 772K9K 792K9K 796K9K 802K9K 830 |
Models fitted with the affected versions
Dacia
- Dacia Duster I2010–2017
- Dacia Logan I2005–2012
- Dacia Sandero I2008–2012
Nissan
- Nissan Qashqai I2007–2013
- Nissan Micra III2003–2010
- Nissan NV2002009–2019
Renault
- Renault Clio III2005–2012
- Renault Mégane II2002–2008
- Renault Mégane III2008–2015
- Renault Scénic III2009–2016
- Renault Kangoo II2008–2021
- Renault Clio II2001–2012
- Renault Scénic II2003–2009
- Renault Kangoo I2001–2007
- Renault Twingo II2007–2014
- Renault Modus2004–2012
How much it costs to repair
Includes: High-pressure pump, injectors and common rail, with cleaning of the circuit and labour.[2][4]
There are no published prices in Spain for this repair on the 1.5 dCi. Caradisiac reports repairs in France of over €5,000 to which Renault contributed. As a generic reference, Autopista puts an injector failure at about €3,900 (price in Spain).
Prices in Spain, including VAT. A workshop hour costs on average €38–66 at independent garages and €77–134 at dealerships in Spain, depending on the region and the brand. How we calculate costs
How to check for it before buying a used car
- Ask for the injection invoices: if the pump, rail and injectors have already been replaced, the risk drops.[2]
- Start the engine from cold: if it is slow to start or does not start first time, be wary.[5][7]
- On a 105 hp built before June 2010, check with the Renault network, quoting the chassis number, whether the 2012 workshop action was carried out.[5]
Parts needed
The part or kit that fixes this fault, according to the sources.
- Buy part at Autodoc (affiliate link, opens in a new tab)
The part that originates the filings; it is replaced together with the rest of the circuit.
- Buy part at Autodoc (affiliate link, opens in a new tab)
- Buy part at Autodoc (affiliate link, opens in a new tab)
Injection rail (common rail)[2]
It is also contaminated and is replaced in the same repair.
- Buy part at Autodoc (affiliate link, opens in a new tab)
Diesel filter[8]
Protects the injection circuit; it must be changed at the manufacturer's intervals.
Affiliate links to Autodoc: if you buy, MotorFiable may receive a commission at no cost to you. Check compatibility using the registration number or the VIN before ordering. More information
How to prevent it
Recalls, campaigns and claims
Technical campaignRenault · June 2012
Workshop action for misaligned injection pump (1.5 dCi 105)
1.5 dCi 105 built up to June 2010 (Mégane III): repositioning of the injection pump, which could cause starting difficulties or engine failure, according to Caradisiac.[5]
What owners say
Frequently asked questions
How do I know whether my 1.5 dCi has a Delphi pump?
According to Wikipedia, Delphi supplied the injection for the versions up to 66 kW and Continental (formerly Siemens) for the more powerful ones. fiches-auto places the problem mainly on the 65, 68/70, 75 (first units) and 85/86 hp, also cites it on the 100 and 105 hp, and considers it resolved on the 90 hp.[1][3]
At what mileage does the pump usually fail?
Caradisiac places it between 60,000 and 140,000 km on the Clio III 70 and 85 hp.[2]
Is it enough to replace the pump?
No. The filings travel through the whole circuit, so the injectors and the high-pressure rail also have to be replaced.[2][6]
Does Renault pay for this fault?
Caradisiac reports that Renault often contributed to the costs, although not always in the proportion expected. There is no record of any cover in force today.[2]
What can you do now?
We will put you in touch with a partner only if you authorise it in the form.
Other 1.5 dCi faults
- Critical severityFrequency: CommonLubricationWear and seizure of the big-end bearingsThe Euro 3 and Euro 4 1.5 dCi engines (approx. 2001-2010), especially the 100 and 105/106 hp, have fragile big-end bearings that can seize and wreck the engine. Renault went as far as paying up to 90% of the repair, with a limit of 7 years and 180,000 km.
- Critical severityFrequency: OccasionalTimingPremature timing belt failureOn the 85, 105 and 110 hp 1.5 dCi engines built up to late 2010, especially in the Mégane III and Scénic III, the timing belt could break early, sometimes before 50,000 km, and damage the engine. Renault opened a workshop action in 2013.
- High severityFrequency: OccasionalTurboPremature turbo failure and intake hoses that come looseThe turbo on the 105 and 110 hp 1.5 dCi can fail early: Caradisiac documents it on the Clio III, Scénic III and Qashqai II, sometimes before 80,000 km. More common and cheaper is for a turbo intake hose to come loose or burst and the engine to lose power.
- Medium severityFrequency: CommonEmissions controlBlocked EGR valve on the early 1.5 dCiThe EGR valve often gets dirty and fails on the 65, 80 and 100 hp 1.5 dCi engines from before 2007; on later versions it is much less common. Cleaning it is often enough.
- Medium severityFrequency: OccasionalClutchPremature dual-mass flywheel failure and clutch problemsThe 105 and 110 hp 1.5 dCi engines can break the dual-mass flywheel early, sometimes before 40,000 km. It warns you with vibrations at idle and metallic noises, and forces you to replace the clutch and flywheel assembly.Repair (garage): €700–€1,300
- Medium severityFrequency: OccasionalInjectionInjector and injector seal failuresThe 1.5 dCi injectors, or their seals, can fail early, especially on the 110 hp, causing rough running, jerking or hard starting. Replacing the affected injector is usually enough; Caradisiac still reports cases on the Kadjar and Duster II.
- Medium severityFrequency: OccasionalEmissions controlNOx trap and AdBlue system on the Euro 6 1.5 dCiThe 2015 Euro 6b 1.5 dCi engines had a badly calibrated NOx trap that Renault corrected with recall campaigns. On the Blue dCi (from 2018), the AdBlue pump, tank or injector can fail, with an emissions warning and even the car locked out with a full tank.
More faults with the fuel pump on other engines and cars
- Critical severityFrequency: Common2.0 and 2.5 HybridLow-pressure fuel pump failure: loss of power and fire riskYes: a low-pressure fuel pump with a defective impeller (Denso) affects millions of Toyotas and Lexuses, including Corolla, C-HR, RAV4 and Camry models with these engines. It can cause loss of power or stalling, and in the EU there is also a risk of leaks and fire on 2018-2022 Corolla, C-HR and Auris models.
- High severityFrequency: CommonBMW N54/N55High-pressure fuel pump (HPFP) failureThe N54's high-pressure pump is one of its best-documented failures: most units will have had it replaced at some point. It warns of itself with long cranking and loss of power; the 2010 campaign was US-only.
- High severityFrequency: Common2.2/2.5 dCiInjection pump or injector failureThe 2.2 dCi's common rail injectors fail fairly often on the X-Trail and Almera, with cases of seizing and leaks; on the Almera with the older YD22DDT, the documented fault is in the injection pump electronics, not the injectors.
- High severityFrequency: CommonVW 2.0 TFSI EA113Wear of the high-pressure pump cam followerYes: the 2.0 TFSI EA113's high-pressure fuel pump is driven by the camshaft through a follower (tappet) that wears; if it wears through it can damage the pump or the camshaft, so it should be checked and replaced as a preventive measure.Repair (garage): €250–€900Appears at around 90,000 km
- Critical severityFrequency: Occasional1.8 TDCiBreakage of the timing belt or of the high-pressure pump's belt (running in oil)Yes: the 1.8 TDCi combines a dry belt for the camshafts with a second belt, running in oil, that drives only the Delphi high-pressure pump. If the tensioner fails or replacement is neglected, the engine can cut out suddenly or suffer serious internal damage.Appears at around 110,000 km
- High severityFrequency: Occasional1.5 BlueHDiSeizure of the high-pressure pump and injection systemSome early 1.5 BlueHDi engines have suffered seizure of the Bosch high-pressure pump, with juddering or the engine stalling on the road, sometimes before 50,000 km. The repair means replacing the entire injection system and the fuel tank.
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Sources
Every fact on this page links to its source. If you find an error, let us know.
- Fiabilité du 1.5 dCiFiches-auto.fr · Motoring press · published 19 April 2024 · consulted 26 September 2026 · in French
- Fiabilité Renault Clio 3 : que vaut le modèle en occasion ?Caradisiac · Motoring press · published 26 November 2012 · consulted 26 September 2026 · in French
- Renault K-Type engineWikipedia · Other source · consulted 26 September 2026
- Estas son las peores averías que puede sufrir tu cocheAutopista · Motoring press · published 9 August 2023 · consulted 26 September 2026 · in Spanish
- Fiabilité Renault Mégane 3 : que vaut le modèle en occasion ?Caradisiac · Motoring press · published 25 November 2015 · consulted 26 September 2026 · in French
- Maxi-fiche fiabilité : que vaut la Dacia Logan en occasion ?Caradisiac · Motoring press · published 16 October 2013 · consulted 26 September 2026 · in French
- Maxi-fiche occasion : que vaut le Renault Scénic 2 en seconde main ?Caradisiac · Motoring press · published 29 October 2014 · consulted 26 September 2026 · in French
- Detecta así la avería en los inyectores y ahorra 1.000 €Autopista · Motoring press · published 21 March 2024 · consulted 26 September 2026 · in Spanish
- Maxi-fiche fiabilité : que vaut la Renault Twingo 2 en occasionCaradisiac · Motoring press · published 15 November 2011 · consulted 26 September 2026 · in French