Timing Chain Failure – 2.0 Diesel

Timing chain failure is a well known problem on all models using the 2.0 Ingenium diesel engine, and with the Discovery Sport being one of the most popular Land Rovers on the road, we see a lot of these in the workshop with this fault. The root cause is oil dilution from incomplete DPF regenerations and the construction of the chains and guides themselves. Initially causing a rattling noise on cold start and sometimes a Restricted Performance message on the dash.

If failing timing chains are left for too long, they can jump time or snap causing the pistons to hit the valves, effectively destroying the engine. The plastic guides that the chains run along can also cause other problems too. As they wear over time, plastic particles from the guides can make their way into the engine oil pickup system blocking it, this can lead to spun crankshaft bearings causing a bottom end failure as well as turbo failures due to insufficient oil supply.

If you have failing timing chains the solution is to replace the chains along with new guides, idlers and tensioners.

To read more about this issue, please take a look at our full article on 2.0 Ingenium timing chains.

Turbocharger Failure – 2.0 Diesel

Turbos on 2.0 diesel versions of the Discovery Sport are known to fail. The main symptoms of turbo failure are a loss of power along with an engine management light.

If a failure is caused by an oil leak on the turbocharger itself and oil makes its way into the exhaust system, you may also notice a large amount of blue smoke coming out the exhaust which gets worse under acceleration.

A failing turbo may also give some advanced warning of failure, you may hear a siren like whining or whistling noise that gets progressively worse. If you are hearing a siren like noise from your turbocharger, make sure to book your Discovery Sport in for a repair quickly.

Turbo replacement is often not as simple as swapping in a new unit, because any contamination in the oil delivery system could potentially cause the new turbo to fail shortly after it is installed. When fitting new turbos at K Motors, we also perform a full engine flush and will recommend replacement of parts which we feel are at risk of contamination including intercoolers, feed pipes and filter screens.

Replace Turbocharger Unit Only | 2.0 Ingenium Diesel – Please see our Ingenium Turbocharger replacement guide for a full estimate.

To learn more about turbocharger issues on all Jaguar and Land Rover vehicles, please take a look at our full article on turbocharged engines.

Piston Cooling Oil Jet Solenoid – 2.0 Diesel

The 2.0 diesel engine fitted to the Discovery Sport and various other models uses an electronically controlled solenoid to manage oil flow to the piston cooling jets. These oil jets help to regulate piston temperatures in the engine block when the engine is under load, reducing stresses and wear on the internals.

However, the solenoid used to control these jets on the 2.0 Ingenium unit is prone to failure, mainly due to coolant leaking from the thermostat housing above onto the solenoid body and connector.

For a guide on diagnostics and replacement along with a fully costed estimate to replace a faulty Piston Cooling Oil Jet Solenoid, please head to our dedicated page by hitting the button below.

Timing Belt – 2.2 Diesel

Early Discovery Sport models use the venerable 2.2 Diesel engine that can also be found in the Freelander 2 and Evoque. This engine is a dependable unit but the timing belt is an essential piece of scheduled maintenance that must not be missed.

The timing belt on the 2.2L engine needs changing every 10 years or 150,000 miles, whichever comes first. It is important to make sure this is done on or before the scheduled interval, as if it were to snap, The pistons will likely hit the valves and you’re looking at over £6k for an engine rebuild instead of some simple preventative maintenance.

For a step by step guide on timing belt replacement for this engine and a fully costed estimate please hit the button below.

AdBlue Issues – Diesel Models (2016 On)

Discovery Sport models with diesel engines from the 2016 model year onwards are all equipped with an SCR system, this is an emissions reduction system that uses the injection of Urea (AdBlue) into the exhaust to stop Nitrogen Oxide (NOx) emissions escaping out of the tailpipe. The SCR system needs to be looked after as it can cause issues to the running of the vehicle, for example, if the system runs out of AdBlue, the car will become immobilised until the system is topped up, but if it is overfilled, the NOx sensors monitoring emissions levels can sometimes fail.

The SCR system could also start adding too much AdBlue into the system leading to increased consumption if there is a fault such as contamination or a sensor failure. If you have notice an increase in AdBlue consumption or any other unusual behaviour, it is advised to get vehicle booked in for a diagnostic check.

Diagnosing SCR System – £74.50 inc. VAT Per Hour

NOx Sensor Replacement – Starting From £710 inc. VAT

DPF Failure – Diesel Models

All diesel Disco Sports come as standard with a DPF (Diesel Particulate Filter). The DPF catches soot in the exhaust system and keeps it there until it can be burnt away at extremely high temperatures during DPF regeneration.

DPF Regeneration will occur on its own when the vehicle sustains high temperatures on a long, high speed run such as on a motorway or dual carriageway. If the vehicle isn’t used for long runs like this every once in a while, the DPF will fill up and an active regeneration will take place. Active regeneration is where extra fuel is injected into the engine to artificially raise the internal temperatures of the engine and exhaust. Some owners may not realise that regeneration is underway and will switch the vehicle off before regeneration is complete, meaning the system will remain blocked. This can cause the dreaded red DPF warning light to appear on the dash with the message “Exhaust Filter Full Visit Dealer”.

We are experienced with DPF problems at K Motors and if diagnostics does not reveal any failed sensors we try to force a regeneration using our Autologic systems before proceeding to a full manual DPF clean. Unfortunately though, sometimes an expensive new DPF will be the only option.

DPF Diagnostics – £74.50 inc. VAT Per Hour

Force DPF Regeneration – £110 inc. VAT

Manual DPF Clean & Regeneration – £300 inc. VAT

To read more on DPF systems, please take a look at our article on DPF Maintenance.

For a fitment guide and full estimate on DPF Replacement, please head to our DPF Failure page using the button below.

EGR Valve – Diesel Models

The Exhaust Gas Recirculation valve (EGR) recirculates burnt carbon in the exhaust system back into the engine to keep emissions under control. If a vehicle is used on mainly short urban journeys in stop/start traffic, this can cause a build up of carbon which can prevent the valve from opening and closing properly. This is likely to cause excessive smoke and a loss of power along with an engine management light on the dash.

EGR Valve Replacement – £680

Front Hub And Bearing

If you can hear a grinding or rumbling noise from the front wheel area that gets worse when turning and louder the faster you travel, this usually indicates a worn front wheel bearing. To confirm, jack up the side in question and feel for play by rocking the wheel from top to bottom and rotate the wheel a few times. If you can feel movement or feel/hear a roughness in rotation then both the wheel hub and the bearing need to be replaced.

It is important to replace failing wheel bearings before they fail completely as the wheel may separate from the vehicle!

Front Wheel Hub And Bearing Replacement (FAG) – £438

Rear Wheel Hub And Bearing

A groaning or rumbling noise from the rear of the vehicle that gets worse the faster you travel often indicates a worn rear wheel bearing. To confirm, jack up the side you suspect the noise is coming from and feel for play by rocking the wheel from top to bottom and spin the wheel a few times. If there is any excess movement or a rough sensation or noise as the wheel turns then the wheel hub and bearing need to be replaced.

It is important to replace failing wheel bearings before they fail completely as the wheel may separate from the vehicle!

Replace complete hub and bearing (NTN) – P.O.A

Brake Discs and Pads

If worn out brake pads are spotted early enough (before any damage is caused to the discs), then only the brake pads will need to be changed. If however your brake pads have been left until you hear the metal on metal sound then you will need to replace the discs as well as they will have been scored by the metal body of the brake pads.

Also if your brake discs are too thin (generally they only last around 32,000 miles) and have a considerable lip on the outer circumference, changing just the brake pads will result in the pads not bedding in properly and likely squealing every time the brake pedal is applied.

Front Brake Pads Replacement – £195

Front Brake Discs And Pads Replacement – £405

Rear Brake Pads Replacement – £220

Rear Brake Discs And Pads Replacement – £325