If you own a TDV6 Discovery or Range Rover Sport, there is something you need to know: it has a cam belt, also called a timing belt, and that belt is at the back of the engine. Not the front. Getting to it means the engine or the gearbox comes out. Plenty of owners have no idea their diesel has a belt at all, right up until it fails.


The 2.7 and 3.0 TDV6 fitted to the Discovery 3 and 4 and the Range Rover Sport drives its belts from the gearbox end, and there is a second belt in there driving the high pressure fuel pump. The newer Ingenium 2.0 uses a chain instead, and early units are known for chain and tensioner wear. Here is what to look and listen for:
• A TDV6 with no cam belt, cambelt or timing belt entry anywhere in the service history
• Rattle or whine from the gearbox end of the engine on a cold start
• On an Ingenium, chain noise that comes and goes with oil temperature
• Rough running, misfires, or timing correlation codes stored on a scan
• Metal debris in the oil filter, which on a chain engine is a serious warning
If your TDV6 has no belt record, ring us before you drive it much further. That belt failing takes the engine with it, and on these vehicles the engine is the expensive part of the car.


Land Rover publishes an interval for the TDV6 belts, and it is one of the jobs most commonly skipped by previous owners because the labour is significant and the belt is out of sight. Skipping it does not make the belt last longer.
Because the access is the same either way, we do the belts, tensioners, idlers and the fuel pump belt together while the engine is apart. Doing half the job means paying the labour twice.
On the Ingenium engines the story is different again. Those run a chain, and the failures we see cluster on early units and on cars with a stretched oil service history. We replace Ingenium timing chains here regularly.
If a TDV6 belt lets go, the valves and pistons meet. That is not a repair, it is an engine. It is the single strongest argument for treating the published interval as a hard deadline rather than a suggestion.
Oil leaks are the other belt killer on these engines. Any leak dripping onto a belt will shorten its life dramatically, so we check for that at the same time rather than fitting a new belt into a dirty engine bay.
We work on Land Rover and Range Rover regularly from our Cardiff workshop, including Ingenium chain replacement, and we have the diagnostic equipment to check timing properly rather than by eye.
Both camshaft belts, the fuel pump belt, all tensioners and idlers, and a proper inspection of the oil pump drive while everything is accessible. We also check for leaks that would ruin a new belt before it has done any miles.
We replace the chain, guides, tensioner and sprockets as a set on the Ingenium engines, and we check the oil service history with you, because chain wear on these is driven by oil condition more than by mileage.
A TDV6 belt job is a significant piece of work and we will be straight with you about that. It is still a great deal cheaper than the engine it protects. Ring us with the registration and we will give you a proper figure rather than a range.
Have the belt history checked before you commit. On a TDV6 it is the single most useful thing to establish about the car, and we are happy to look one over for you before you buy.

We have been trading for over 20 years and have gained major accreditations with well known motor companies.
Being approved by the TSI, the IMI, the RGI and the IGA should give you confidence that we are the turn to independent garage that can service your Land Rover or Range Rover vehicles timing chain or wet belt.
We have fully qualified Land Rover or Range Rover technicians certified by the IMI. This means if you have any timing chain or wet belt problem we can sort the issues out for you quickly at competitive rates.
Contact A1 Diagnostics
Get in touch today for expert advice or to book your Land Rover or Range Rover vehicle in for an appointment to assess the work that needs to be carried out on your timing chain, wet belt or cam belt. We can inspect your Land Rover or Range Rover vehicles timing chain and decide the best route to take.
• Timing chain and cam belt replacement for all makes and models
• Land Rover servicing and repairs in Cardiff
A1-Diagnostics and ECU RepairsTel: 02920 220 380
Opening Times
Mon – Fri: 8:00am – 6:00pm
Email: info@a1-diagnostics.com
