DV5 1.5 BlueHDi Camshaft & 8mm Timing Chain Assembly (Expert, Dispatch, Vivaro, Proace)

A rattling or stretched timing chain on the 1.5 BlueHDi DV5 engine is a fault that only gets more expensive the longer it’s left, and the 8mm chain and camshaft assembly is a job that rewards doing properly rather than quickly. We filmed a full camshaft and 8mm timing chain assembly on this engine from start to finish, and this article walks through what’s involved alongside the video.

Watch the full assembly on our Vans Guru YouTube channel — subscribe there for new video walkthroughs as we film them.

Applies to

This covers the 1.5-litre DV5RC / DV5RD BlueHDi diesel on the Stellantis (PSA) platform, and the 8mm timing chain upgrade specifically. It’s directly relevant to:

• Peugeot Expert 1.5 BlueHDi
• Citroën Dispatch 1.5 BlueHDi
• Vauxhall / Opel Vivaro 1.5 Turbo D
• Toyota Proace 1.5D

Confirm your engine code before starting — see our guide to reading fault codes properly if you want to rule other causes out first.

Symptoms of timing chain wear on the 1.5 DV5

Timing chain stretch on this engine tends to announce itself gradually rather than all at once. Common signs include a rattling or chattering noise from the front of the engine, most noticeable on a cold start-up and easing off as the engine warms; a rough or uneven idle; a warning light on the dash, sometimes with fault codes relating to camshaft or crankshaft correlation; and, in more advanced cases, a noticeable loss of power. None of these are exclusive to the timing chain on their own, so it’s worth confirming the cause before you commit to stripping the front of the engine down.

Why the 8mm chain matters

The 1.5 DV5 BlueHDi has had a documented history of timing chain wear issues in the smaller original chain, which is why an 8mm-width replacement chain and kit — wider and more durable than the original — has become a common upgrade path when the original chain is due for replacement. The video shows this upgrade being fitted rather than a like-for-like replacement of the original narrower chain.

What the job involves

In the video we work through the full camshaft and timing chain assembly process on this engine. Broadly, that means:

• Disconnecting the battery and removing whatever sits in the way at the front of the engine
• Setting the crankshaft and camshaft to their correct timing reference positions before anything is disturbed
• Removing the old timing chain, tensioner and guides
• Fitting the new 8mm chain, guides and tensioner
• Aligning the camshaft and crankshaft timing marks correctly before final assembly
• Rebuilding the front of the engine in reverse and checking everything turns over freely by hand before starting it

We deliberately don’t publish exact timing mark positions or bolt torque figures in writing here, because they’re specific to the engine code and revision — the video shows the actual process and reference points we used on this engine, and you should cross-check them against manufacturer workshop information for your specific van before you commit a bolt to a number.

Tools and parts

Beyond a standard socket set, this job needs the correct camshaft/crankshaft timing tool set for the DV5 engine, a torque wrench, and the 8mm timing chain kit itself (chain, tensioner and guides, sold as a kit). Attempting this without the correct timing tools is one of the most common ways this job goes wrong — see below.

Safety notes

Disconnect the battery before starting. Getting the timing marks wrong on a diesel engine can cause the pistons and valves to collide when the engine is turned over or started, causing serious internal engine damage — do not turn the engine over by hand or start it at any point where you’re not certain the timing is correctly set. Support the van properly on axle stands rated for the weight, never on a jack alone.

Common mistakes

• Not using the correct timing tools. Eyeballing timing marks instead of locking the crankshaft and camshaft with the correct tool set is the single biggest cause of a bent-valve engine on this job.
• Turning the engine over with the timing chain off or the marks unconfirmed. This is how interference engines get expensive very quickly.
• Reusing a stretched tensioner or worn guides. Fitting a new chain against tired guides or a tired tensioner shortens the life of the new chain.
• Skipping a final check. Always rotate the engine by hand through at least two full revolutions after assembly, before starting it, to confirm nothing binds and the marks still align.

When to stop and get help

If you don’t have the correct timing tool kit for this engine, or you’re not confident reading and setting camshaft/crankshaft timing marks, this is a job worth paying a specialist for. Getting the timing wrong on this engine risks turning a chain replacement into a full engine rebuild.

After the repair

Once reassembled, rotate the engine by hand through at least two full turns before starting it, to confirm everything is free and the marks still line up. Start the engine and listen carefully for any rattling, which shouldn’t be present with a correctly tensioned new chain. Recheck for any unusual noise or warning lights after the first few drives.

Frequently asked questions

Is the 8mm chain upgrade better than the original chain?

The wider 8mm chain is a commonly used upgrade path on this engine because of documented wear issues with the original narrower chain, but confirm compatibility and fitment for your specific engine code before buying a kit.

Can I do a timing chain job without the manufacturer timing tools?

Not safely. This is an interference engine, meaning pistons and valves occupy the same space at different points in the cycle — getting the timing wrong risks serious internal damage. The correct timing tool set isn’t optional for this job.

How do I know if it’s the timing chain and not something else?

A rattle that’s worse on a cold start and eases as the engine warms is a classic sign, but fault codes for camshaft/crankshaft correlation are a more reliable confirmation than noise alone. If you’re not sure, our guide to reading fault codes covers how to check properly.