I've dealt with blocked up oil pick ups on a few 20VT's, if caught early enough then it's not a problem. If the engine sounds rough and the oil light has flicked on a few times that does not bode well, the head in general will have been staved of oil. First the tensioner looses pressure, the cams and lifters are staved of oil and then the main bearings cop it, pretty much in that order.
All you can do is pull the sump and cam cover off and have a look. A replacement 20VT engine isn't expensive so even if the motor is toast it's not the end of the world.
I had one fail with no warning whatsoever whilst driving a B5 A4 quattro just like this, that totaled the head causing the cambelt to snap stranding me beside the M5 for eight hours.
I also have a good 180bhp 20VT engine sat under my workbench should you need one.
All you can do is pull the sump and cam cover off and have a look. A replacement 20VT engine isn't expensive so even if the motor is toast it's not the end of the world.
I had one fail with no warning whatsoever whilst driving a B5 A4 quattro just like this, that totaled the head causing the cambelt to snap stranding me beside the M5 for eight hours.
I also have a good 180bhp 20VT engine sat under my workbench should you need one.
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