3 Leaking oil under the side of the engine. Most vacuum pumps are located on the left or right side of the engine, typically closer to the brake master cylinder on diesel vehicles. The vacuum pump requires oil to maintain proper lubrication and to reduce internal temperature due to its frequent use. Re EGR Valve removal/cleaning. I have changed loads, the amount of work involved is not worth the hassle of trying to clean them, most failures are the electronic valve operation. Not clogged with soot, the only option I would recommend is a new 1 from tps about £300, I wouldn't bother getting 1 from factors or ebay as they don't come
EGRand throttle body cleaning Skoda Fabia 1.9 tdi AXR | Fix My Car Garage.
After265,000 miles and 21 years of faithful service the original EGR valve malfunctioned and my car would not pass smog in CA. In July I replaced the EGR with a Borg Warner EGR valve and 3 months and 3,000 miles later it is spraying oil through a hole under the diaphragm (see attached photos). The original EGR never sprayed any oil.

Id recommend removing the bolt on the right of the air filter box before you touch the EGR valve. You can then lift the airbox out of the way which will allow you slightly easier access to the EGR valve with your ratchet. You need a 10mm spanner or socket for both this bolt and the three bolts that hold in the valve.

LeakedValve Seal. Valve seals are in charge of keeping the valves in the cylinder head sealed. Oil can enter the intake manifold and cause the engine to smoke if they begin to leak. Repairing leaky valve seals is a very straightforward and affordable procedure. The first step is to remove the engine’s cylinder head.
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1.9 tdi egr valve leaking oil