A client recently called us about his Audi A4 2.0 TDI and reported that it had suffered engine failure. Before he even mentioned how it failed my response was “let me guess…..oil pump failure”. To which he responded “what?! how did you know?”.
Please dont misunderstand the above and believe that I am some sort of engine expert extraordinaire who can sense every engine that fails around the world (I wish 🙂 ). Unfortunately the case here is that oil pump failures are probably the number one cause of engine failures on the Audi, VW, Skoda and Seat 2.0 TDi models.
So lets understand a bit more about the issue. Although its the oil pump that fails, the problem actually appears to be with the balancer shaft which causes the issue. What happens is that the drive from the slave balancer shaft that connects to the oil pump is a 6 AF hex bar and this has inadequate engagement depth with the grooves in the slave shaft. As a result its the torsional oscillations from the balance shafts which destroy the oil pump coupling.
Technical jargon aside, if you have an Audi, VW, Skoda, Seat which is a 2.0 TDi up to around 2007 then its susceptible to this problem as after that they were built without the balance shaft.
The oil pump typically fail between 60,000 – 100,000 miles and once it happens its pretty much curtains on the engine unfortunately. So if you’re reading this and you happen to be one of the unlucky people who owns one of these vehicles, and havnt yet suffered from this failure then heres what you can do:
– First point of call is to always contact a main Audi, VW, Skoda or Seat dealer (depending on what vehicle you own). From the feedback we’ve seen it appears main dealers will not likely take any responsibility but there is no harm in trying to see if they can address this issue for your free of charge because its clearly a common defect.
– Pay a specialist engine rebuilding workshop around £1500 to get the balancing system changed to the new upgraded one.
– Sell your vehicle and purchase something a little more reliable
If you would like a quote for an engine rebuild or just need some general advice please do not hesitate to get in touch with us on 0208 133 6004