Sump level rise 2010 103TDI PD

[kaanage]

Did you get the oil that you changed out, tested?

[Skooter]

Did you get the oil that you changed out, tested?

I didn't go down that path until I was sure there hadn't been a double fill. I still have the oil in clean containers, so might run the test suggested by ? (brain fade) and see what evaporation tells me. Almost irrelevant now though, as I know it had 4.3L of oil in it when I serviced it. It can only be diesel running the level up the stick.

Primo task is to find out whether it's:

a. regen overload (flushing down through cylinder walls)
b. a leaking tandem pump (unlikely after 2 years from new - assuming this has been happening for quite some time before I even bought the car)
c. leaking injectors (as per #a.)

I have to decide whether to chase Skoda Oz (or Skoda Richmond, who sold and serviced the car before I bought it), as this is definitely a prob dating back to the warranty period) or cut my losses and get an indy to look at it. Obviously praying it's a simple fix.

[Skooter]

Looking at what precisely? Injector duty cycle?

Showing my ignorance here. Duty cycle? Wouldn't a leaking injector be a straightforward check for pressure drop? Or does leakage occur when it's running (ie between injection cycles)? And is it something that happens when the engine is not running?

It does seem odd that I'm getting great fuel econ, but I guess 2L lost (down into the sump) in 4k ain't that noticeable.

[Transporter]

If it's not the regeneration problem caused by faulty sensor and the DPF id still usable? It won't be a simple fix. The DPF can be worn out (used up) in relatively short time/distance, so longer you put it of, the greater the chance that it won't regenerate.

[gldgti]

Showing my ignorance here. Duty cycle? Wouldn't a leaking injector be a straightforward check for pressure drop? Or does leakage occur when it's running (ie between injection cycles)? And is it something that happens when the engine is not running?

It does seem odd that I'm getting great fuel econ, but I guess 2L lost (down into the sump) in 4k ain't that noticeable.

The injectors are electronically actuated, and one of the things you can read with a VCDS system is the duty cycle or injection qty per cycle.

For the older Pump Deuse diesels leakage is not really feasible, as the injector is moslty mechanical and will only be able to pump fuel for a portion of the pistons cycle.

But, the commonrail engines (I assume) would be able to leak at any time during the pistons cycle if there was a mechanical fault with the injector.

However, I was sort of under the impression that a fault of this kind would be detectable by the ECU (as the actuators signal would be strange if the injector was in a position to leak) and put the car into limp mode - this all my understanding based on my own experience and what I've read - but since Transporter mentioned about diagnosing a leaking injector I thought I would ask - "How?!"

Anyway, as to your fuel economy - what I mean is that if the ECU was attempting to do regenerations on the DPF often, this would impact adversely on your fuel economy.

No, a couple of litres over a few thousand would not be noticeable in your fuel economy.

[Transporter]

The injectors are electronically actuated, and one of the things you can read with a VCDS system is the duty cycle or injection qty per cycle.

For the older Pump Deuse diesels leakage is not really feasible, as the injector is moslty mechanical and will only be able to pump fuel for a portion of the pistons cycle.

But, the commonrail engines (I assume) would be able to leak at any time during the pistons cycle if there was a mechanical fault with the injector.

However, I was sort of under the impression that a fault of this kind would be detectable by the ECU (as the actuators signal would be strange if the injector was in a position to leak) and put the car into limp mode - this all my understanding based on my own experience and what I've read - but since Transporter mentioned about diagnosing a leaking injector I thought I would ask - "How?!"

Anyway, as to your fuel economy - what I mean is that if the ECU was attempting to do regenerations on the DPF often, this would impact adversely on your fuel economy.

No, a couple of litres over a few thousand would not be noticeable in your fuel economy.

Worn out injector(s) could be in the right position and be dripping the fuel in. Regardless, his car should go to the proper workshop to be diagnosed properly. Otherwise it's just speculating.

[gldgti]

Worn out injector(s) could be in the right position and be dripping the fuel in. Regardless, his car should go to the proper workshop to be diagnosed properly. Otherwise it's just speculating.

I agree - but - this forums primary purpose is as a knowledge repository. If you have some knowlege about how to diagnose the injectors, why not share it so that someone might make use of that in the future?

I am not trying to diagnose the OP's car over the internet - I want to know how to diagnose an injector fault with VCDS. Can you tell me?

[Johnnojack]

I'm still tipping leaking fuel pump. If the injectors were leaking wouldn't most of the extra fuel be causing smoke? Yet it is reportedly running fine. I haven't had one apart myself but diesel leaking into the tappet cover from the pump should be a bit obvious when the cover is removed, not a huge job either.

[kaanage]

So any conclusion to this...?

[Skooter]

So any conclusion to this...?

Reporting back after many months. After discussion (unsuccessful) with Richmond Skoda re possible warranty claims, I emailed Skoda and had a call from VAG and was given a warranty case #.

After I was sure the sump level had again risen I contacted them and they approved my taking it to a Skoda dealer for inspection. Preston Motors, Epping did the work. Check over engine. Drain oli, measure (5L - so a little over) & refill. Inspection on dipstick after a week and all OK (though the level after they filled with 4.3L was what I thought was high - when I serviced I used most of a 5L container and it wasn't up to the bulbous part of the dipstick - should be 4.7L with filter housing drained). Anyways, three or four weeks later (and some long trips) they did a drain & weigh and said it hadn't moved. Another dipstick check 2 weeks later.

Their conclusion: absolutely no doubt that Richmond had double-filled it. They couldn't find any faults with the fuel or pump system. So I'm breathing easy and have the safety net of their inspection should prem failure of the DPF occur. Car is running an absolute treat - as it has since the day we got it.

Pretty happy with the service I received from VAG and Preston Motors - but I'll still be doing all my own fluid and filter changes!!