Peugeot BlueHDi – What Went Wrong?


The Engine

After being introduced in 2017 on the Peugeot 203 MkII, the Euro 6, common rail, 1.5l BlueHDi has already suffered a plethora of faults with injection system jams, mass air flow failure causing traction control failure and AdBlue tank seizure amongst the more common issues.

However, much more seriously, an issue affecting early engine heads of this series can cause a mechanical fault, potentially resulting in catastrophic, “you need a new one”, engine failure. This, of course, being the stretching and eventual failure of the camshaft timing chain, with so many cases going wrong well before the scheduled 90,000 mile ( 150,000km ) expected life cycle.

Several models have been affected, across both passenger and light commerical applications alike, including those listed below ;

C3 III, C3 Aircross, C4 III, C4 Cactus, C4 SpaceTourer, C5 Aircross, Berlingo III, Berlingo III Van, Traveler, Jumpy

DS :
DS3 Crossback, DS4 II, DS7 Crossback

Corsa, Mokka, Crossland, Grandland, Combo, Combo Cargo, Zafira, Vivaro

208 II, 2008 II, 308 II and III, 508 II, 3008 II, 5008 II, Rifter, Partner, Expert

Proace, Proace City, Proace City Verso, Proace Verso


Signs & Symptoms

Outside of the usual signs that an engine is not happy, two predominant symptoms relating specifically to the chain are the excessive chatter noise caused by chain slack and / or wear and exessive or complete failure to turn over the engine. In both cases, the focus should immediately become the timing chain connecting the camshafts, with its resilience over time brought into question.

According to several technical notes and circulars from the PSA Groupe, modifications were later made to the engine specification, amongst which the inclusion of a beefier 8mm pitch chain to replace the failing 7mm chain which, in turn, resulted in changes to both the camshafts and rocker cover amongst a list of further optional parts and / or checks to be made, at the discretion of the dealership, of course.

Claiming to both help the engine run smoother and faster, the changes were not just seen as a fix to the engine’s issues, but a “modernisation” of the engine and a direct answer to some of it’s quirks.

Whilst there is not an easily specific date split to blanket all makes and models which separate the earlier engines from the later version – at this time – spotting affected blocks can be as simple as examining the rocker cover of the engine, without the need to break seals and examine internallly.

✓ Cam housing with ( a ) engraved reference 9812647280 and flat housing design around the cam sprockets should contain the earlier 7mm pitch chain

✗ Cam housing with ( a ) engraved reference 9830580480 and ( b ) bumped housing design around the cam sprockets should contain the later 8mm pitch chain


The Solution, From GT Automotive

After recognising the challenges facing this engine, PSA of course have revised parts design and the resulting OE “modernisation” upgrade parts are available directly at / from dealership level at considerable expense to the customer.

With the release of aftermarket parts, manufactured on the same production lines as OEM factory parts, GT Automotive can now provide a cost-effective, OE quality solution for these ailing engines without the need for expensive, upgraded dealership parts.

But What If The New Chain Goes Bad…?

GT Automotive have also announced the 8mm pitch timing chain kit coming very soon, for the newer engines fitted with PSAs OE upgrade or the earlier engine version that have undergone the “modernisation” at dealership, giving a variety of solutions for this problematic beast.

With all parts stocked at our brand new head office and distribution center in Witney, Oxfordshire for immediate same day dispatch, and backed up with a no quibble parts cost manufacturer warranty, we give you peace of mind to fit and forget with this tricky engine.

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