Whining Balance Shafts a harbinger of premature wear
Quote:
Originally Posted by
scarry
Ditto for burn switch as i said above.
THe Jap/Thai built vehicles generally use this system and its very reliable,now its been sorted,excluding the Toyota stuff up on a few models which led to the class action.Other models such as the ones we run have had no issues.
Some manufactures do seem to overly complicate things for unknown reasons as we know.
Ok, This thread has cast further light on my D5 2.0 MY2018 motor fail at 45,000 km. This vehicle has been serviced by the dealer IAW the manufacturers requirements 2years/34,000km. Second service at 4year and 42,000 km the dealer observed balance shaft whine and booked the vehicle in for replacement shafts. However in the intervening 2 month wait for parts the motor failed. A new long motor us required.
I can’t help thinking that the balance shaft whine is an early indicator of motor wear caused by oil dilution.
Sd4 motor fail at 45,000 km
Quote:
Originally Posted by
BradC
The DPF load is both calculated by an estimated soot value in the ECU and measured by a differential pressure sensor across the DPF. The DPF loads up and requires burn-off.
All DPFs require active regeneration (burn off). That requires a significant increase in exhaust temperature and there's 2 ways to do it. The first is a downstream injector that pumps diesel into the exhaust pre-dpf. I believe some GM units do that. The other is extra diesel injection on the exhaust stroke. That's also very common among other vehicles.
So while there may be a design issue with the algorithm on those LR engines, it's a very common method of regeneration, and in fact has been used on DPF equipped Discovery diesels since the EU4 D3.
DPF equipped vehicles are just not suitable for short trip shopping trolleys.
Just a follow up. It turns out that the SD4 motor fail at 45,000 km was caused by failure of cylinder one’s cooling oil jet. I understand that there were a couple of these failures in the early SD4 motors. Cylinder one and cylinder four were most vulnerable. The dealer informed that the issue is rectified with minor changes made in later motors.
2018 DISCOVERY SD4 SE Fail
I was wondering if anyone could provide some advice.
Our 2018 Discovery SD4 SE with 80,000km had a sudden catastrophic engine fail friday afternoon before Christmas. I was on the freeway before the car went limp and a warning immediately appeared on the dash saying 'critical oil required', so I pulled over and called roadside assistance to get towed.
Unfortunately we couldn't find a mechanic 'including the closest LR dealer' who would accept a towed vehicle so it is currently at our local mechanic who is closed until 15th January and is unable to repair it anyway.
We have had mechanics look at it and surmise that a pistons has broken through the cylinder wall.
The car has full service history with LR, had a blue slip and full service in the month prior with no indication there was potential for a sudden 'catastrophic engine failure'. I plan on getting a full diagnostic of the engine failure which I assume will require the engine needing to be removed, so it seems logical to get a new engine installed at the same time.
My question is if you were in my situation would you replace the engine and what with?
And where would you take it? My closest biggest service centre is Nowra so I'd preferably like someone to do the work local so I don't have to travel too far if anything goes wrong afterwards. Does it matter since it's out of warranty and requires a new engine who does the work as long as they are reliable?
I'd appreciate any advice.
Many thanks
