Jolting under acceleration is a very common sign of faulty injection in the Peugeot 2008 diesel, especially with the 1.6 e-HDi and BlueHDi versions. Replacing injectors can turn into an expensive affair for owners of this popular compact SUV. Do you want to know which signs you should look out for and what you can expect?
Which diesel engines most often have injection problems?
When the Peugeot 2008 was introduced in 2013, the 1.4 HDi 68 hp and 1.6 e-HDi 92/115 hp diesels were available. These older diesel engines are more prone to faults around fuel injection than you might expect. From 2015 the BlueHDi diesels with 100 and 120 hp appeared, which were presented as more powerful and more modern. BlueHDi is Peugeot’s name for cleaner diesel engines with improved emissions and particulate filter technology.
In practice, it turns out that cars with higher mileage in particular start to suffer from injector-related complaints. According to parts and maintenance sources, wear on injectors often only becomes apparent over time. In the later BlueHDi models, the technology is more refined, but a good maintenance history is still essential to prevent problems.
How do you recognise injection faults in diesels?
Injection problems mean that the engine no longer injects the right amount of diesel at the right time. This leads to recognisable symptoms that you will clearly notice while driving. Most owners notice it first when accelerating or when starting the car.
Watch out for these typical signs:
- Hard starting, especially in cold weather
- Rough or unstable idling of the engine
- Loss of power or hesitation while accelerating
- Jolting engine response when pulling away
- Smoke from the exhaust
- Warning lights on the dashboard
These issues arise because an injector can fail over time. As a result, too much, too little or fuel that is too late enters the engine. The result is an irregular combustion cycle that you feel immediately while driving.
What causes injection faults?
The technology behind modern diesel injection is complex and sensitive to contamination. In the Peugeot 2008 diesel engines there are several causes that can lead to injection problems.
The most common causes are:
- Worn or faulty injectors due to normal wear and tear
- Contamination in the fuel system that disrupts injection
- Problems with the fuel filter that no longer does its job properly
- Faults in engine management that send incorrect signals
In practice, an apparently simple engine problem often has a deeper underlying cause. That is why reading fault codes and a step-by-step diagnosis is important before you start replacing parts. Sometimes the faults do not lie directly with the injector itself, but with contamination or defects elsewhere in the fuel system.
Why is fuel quality important?
Fuel quality plays a major role in preventing injection problems. Lower-quality diesel contains more contaminants that can settle in the fuel system. Driving for long periods with an almost empty tank increases the risk of contamination, because sediment is more easily drawn in.
Preferably fill up at reliable filling stations and make sure your tank does not remain almost empty as a rule. This helps to limit contamination in the system and extends the service life of the injectors.
How much does injector replacement cost on a Peugeot 2008?
Replacing injectors is an expensive repair that takes many owners by surprise. The costs depend on the number of injectors that need to be replaced and whether you opt for original or reconditioned parts.
Allow for the following costs:
- One new injector: between 300 and 500 euros each
- Labour for replacement: 200 to 400 euros
- Reconditioned injectors: 150 to 300 euros each
- Total costs when replacing all injectors: 1,500 to 2,500 euros
Many garages advise not only replacing the faulty injector, but all injectors at the same time. This prevents you from facing the same complaint again within a short time. For cars with high mileage, this is often the wisest choice.
Always have injection faults read professionally first before you replace parts. An incorrect diagnosis can lead to unnecessary repair costs without solving the problem.
Jolting acceleration: what should you do?
If your car responds with jolts while accelerating, you need to act quickly. This symptom often points to a fault in fuel injection, but can also have other causes. Continuing to drive with this problem can lead to further engine damage.
Follow these steps if you experience jolting acceleration:
- Have the fault codes read at a specialist garage
- Check whether the fuel filter has been replaced recently
- Ask for a pressure test on the fuel system
- Have the injectors tested for correct operation
- Consider a diagnosis of the complete engine management system
Always combine inspection of the injectors with checks on related systems. Problems with the fuel system, the EGR valve (exhaust gas recirculation, a component that routes exhaust gases back to reduce emissions) and the particulate filter can mimic each other. A thorough diagnosis prevents you from replacing the wrong component.
Tips for buyers of a used Peugeot 2008 diesel
Are you planning to buy a used Peugeot 2008 diesel? Then it is wise to be extra alert to potential injection problems. A test drive and thorough inspection can save you a lot of trouble.
Pay attention to the following points when buying:
- Check whether the car has been serviced regularly according to the schedule
- Ask about previous fuel system-related repairs
- During the test drive, pay attention to hesitation, vibrations and warning messages
- Check whether the fuel filter has been replaced recently
- Ask specifically about previous problems with injectors, EGR or particulate filter
- If in doubt, have a pre-purchase inspection (carried out in advance by a specialist garage to detect hidden defects) done by a specialist
Be particularly alert with cars that have covered more than 150,000 kilometres. At that point, injector-related complaints occur more often. A car that runs roughly or shows an unexplained diesel smell or smoke deserves extra attention.
Prevent injection problems with maintenance
Preventive maintenance is the best way to delay or avoid injection problems. In practice, the Peugeot 2008 diesel engines are generally economical and pleasant, but they do require careful maintenance.
Follow these maintenance tips:
- Replace the fuel filter according to the service schedule
- Preferably fill up with clean, good-quality diesel
- Avoid driving for long periods with an almost empty tank
- Let the car reach operating temperature regularly
- Ideally use diesel additives that keep the system clean
- If the engine runs roughly, have a diagnosis carried out immediately
If your engine management warning light comes on, do not postpone a visit to the garage. Early diagnosis often prevents more serious damage and higher repair costs. Small faults can develop into costly injector repairs if you wait too long.
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What will you find on Carnews?
Injection problems are not the only thing you need to take into account as a Peugeot 2008 owner. On the Carnews website you will find much more information about typical car problems, maintenance tips and experiences with different models and brands. Discover more knowledge about the car you drive or are interested in, and make better-informed choices about maintenance and purchase.
Frequently asked questions
Symptoms of injection problems on a Peugeot 2008 diesel include hard or long starting, irregular idling, hesitation or jerking when pulling away, loss of power and sometimes extra smoke or a warning light. You can roughly identify this yourself by paying attention, with both a cold and warm engine, to starting behaviour, vibrations or an unstable revs at idle and any smoke from the exhaust. Take a test drive in which you accelerate firmly in different gears to feel whether the engine pulls through smoothly or hesitates. If you see warning lights come on on the dashboard or the car clearly lags behind in power, then a more detailed professional inspection of the injectors and the fuel system is advisable.
Common causes of injection problems with the Peugeot 2008 diesels are worn or faulty injectors and contamination in the fuel system, as a result of which injection no longer works correctly. These problems often manifest themselves as difficult starting, irregular idling, hesitation and smoke. The older 1.4 HDi and 1.6 e-HDi engines (from the launch in 2013 up to the switch to BlueHDi around 2015) in particular deserve extra attention as the mileage increases. The later BlueHDi engines (100 and 120 hp) have more modern technology and in practice are generally less known for injection problems, although maintenance remains crucial.
Possible solutions for injection problems on a Peugeot 2008 diesel include cleaning the fuel system (including replacing the filter), testing and if necessary reconditioning the injectors, or completely replacing one or more injectors. For a simple cleaning or filter service, you should broadly think of a few hundred euros, depending on the workshop and products used. Reconditioning or replacing individual injectors can vary per injector from roughly 250 to well over 500 euros, including labour. With several faulty injectors or additional damage (for example to the high-pressure pump or injector wiring), the total costs can approach or exceed one thousand euros.
You can mainly prevent injection problems on a Peugeot 2008 diesel by always filling up with good-quality diesel, not routinely driving with an (almost) empty tank and strictly following the fuel filter replacement and prescribed service intervals. Have the fuel system checked regularly, especially at higher mileage, so that early wear or contamination of the injectors is detected in time. Avoid short trips if possible and make sure the engine regularly reaches proper operating temperature and revs, so that soot and deposits build up less quickly around the injectors and combustion chamber. If the engine runs irregularly, starts badly or produces smoke, have it read professionally straight away to prevent further damage to the injectors.
