YES.

In the class of "hen's teeth" I recon.

Think the pump deuse fuel system only runs at 4 bar on the td5, high pressures are actually generated at the injector itself. Being a tightwad I would chuck a litre or two of oil the the tank and run it. I had a td5 years ago and I ran it on all...

Running on two? Noise/blowing out of the air filter points to valve gear issue of some sort, or head gasket blown between two cylinders.