MajorCommonEngine

Peugeot 3008: PureTech 1.2 EB2 Carbon Intake Valve Buildup

PureTech 1.2 EB2 Carbon Intake Valve Buildup is a common engine fault on the Peugeot 3008 on the 2017–2024 cars, and we rate it major. Putting it right costs $700 to $1,600 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 23 documented faults on the Peugeot 3008.

Vehicle: Peugeot 3008
Engine: 1.2L
Years: 2017–2024
Fuel: petrol
System: Engine

This page covers the Peugeot 3008 as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Peugeot 3008 faults23 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Timing belt or PCV / oil separator yet. We would rather show none than show a picture of a different part.

What goes wrong

The second-generation 3008 P84 with the 1.2 PureTech 130 engine shares the direct-injection EB2DT architecture and its carbon accumulation on intake valves. Without port injection fuel washing the valves, crankcase oil vapour from the PCV system coats valve stems and back-faces with oil-carbon deposits. The P84 3008 also suffers from a PCV oil separator that degrades prematurely in the three-cylinder layout, accelerating the carbon accumulation rate above that seen in the 308 T9. Buildup becomes operationally significant by 80,000-100,000km. The P84 also features an early documented serpentine belt tensioner weakness on the 1.2T unit that can cause belt slip and accessory failure independently of the carbon issue.

What you would notice

Warm-engine rough idle and misfire sensation, smooth cold start
P0300-P0303 cylinder-specific misfire codes
Hesitation under part-throttle driving conditions
Elevated fuel consumption over baseline
Occasional hot-soak cold-start difficulty

How to check it

Where to look. Cylinder head intake ports and valve back-faces, PCV separator at cam cover top

Inspect throttle body and intake manifold interior for carbon soot as a proxy indicator.
Scan for P030X misfire codes across all modules.
Check PCV hose from cam cover for oil saturation indicating separator failure.
On P84 also check serpentine belt condition and tensioner movement.
Request any service history of intake cleaning.
Ask workshop to borescope intake ports through spark plug holes.

Parts involved: Timing belt, PCV / oil separator.

What it costs to put right

$700 to $1,600 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

“Has the intake been walnut-blasted or cleaned at any service interval?”
“Has the car had any rough idle, misfires or hesitation complaints?”
“What is the current mileage and full service history?”

Now check the Peugeot 3008 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.

Peugeot 3008 buyer questions

Is puretech 1.2 eb2 carbon intake valve buildup serious on a Peugeot 3008?

We rate it major and common on the Peugeot 3008. The second-generation 3008 P84 with the 1.2 PureTech 130 engine shares the direct-injection EB2DT architecture and its carbon accumulation on intake valves. Without port injection fuel washing the valves, crankcase oil vapour from the PCV system coats valve stems and back-faces with oil-carbon deposits. The P84 3008 also suffers from a PCV oil separator that degrades prematurely in the three-cylinder layout, accelerating the carbon accumulation rate above that seen in the 308 T9. Buildup becomes operationally significant by 80,000-100,000km. The P84 also features an early documented serpentine belt tensioner weakness on the 1.2T unit that can cause belt slip and accessory failure independently of the carbon issue.

How much does it cost to fix on a Peugeot 3008?

$700 to $1,600 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 Peugeot 3008 years are affected?

Our research records this fault on the 2017–2024 Peugeot 3008. 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.

How do I check for it before I buy?

Inspect throttle body and intake manifold interior for carbon soot as a proxy indicator. Scan for P030X misfire codes across all modules. Check PCV hose from cam cover for oil saturation indicating separator failure. On P84 also check serpentine belt condition and tensioner movement. Request any service history of intake cleaning. Ask workshop to borescope intake ports through spark plug holes. Look here: Cylinder head intake ports and valve back-faces, PCV separator at cam cover top