2.0 TDi 140hp
Intermittent lubrication
There is a problem with the oil pumps in the 2.0 TDI engines, which is essentially a lubrication failure, especially during regime changes. If you've already changed the turbo and it still doesn't last, this article is for you.
In this article we are going to address one of the chronic problems of the 2.0 TDi engine This particular issue appears in the BPW, BLB, BRE, BNA, BRF, BKP, BMA, BMP & BHW engine codes associated with the GT1749VA 717858 turbo.
This problem is widely identified and recognized but we will address it anyway.
Initially the oil pump was driven by a chain with a hydraulic tensioner...
...which has known its fair share of failures...
Later the problem was identified and the chain was replaced by sprockets and toothed pulleys, without an hydraulic tensioner.
Yet even one more problem in the oil pump problem would remain.
The oil pump (in the pictures the small sprocket closest to the ground) works in a sub-carter and is driven by a hexagonal shaft. This shaft with time gets worn-out at the ends
In practice the oil pump generates sufficient pressure at idle and in rotation. It only fails in RPM changes. Sometimes so dimly that it is not enough to turn on the oil light on the dashboard, which is there to alert the driver.
These repeated failures over time damage the most fragile parts of the engine, namely the turbo that spins at high rotation and with high temperatures. Being a small component and with a lot of effort to cope with, this is usually the first component to fail.
If this problem is not detected in time, the camshaft and other engine components will suffer major damage.
As a turbo repairer, NCturbo is on the front line identifying this problem and is committed to notifying you in a timely manner to avoid harm to you and your customers.
Nelson Campos
