Glad you discussed the centrifuge cap - I am now aware I need to order some gaskets for the hpfp before digging in. This kind of failure was new to me but was easy enough to confirm when I pulled the cap and the sound went away.
Seems a bit more complicated than the M112/M113 I'm used to. I hate to see that Mercedes went to a plastic intake manifold like so many other carmakers. I just read VVT, DI and demand-controlled fuel pump, water pump, oil pump and alternator. *How do these changes affect parts prices & durability?*
Adding technology to basic parts will increase cost. Durability wise, I don't really see an increase in replacement frequency. Most fuel pumps I replace are on vehicles that are 10+ years old. Same thing with VVT components and fuel injectors. Water pumps are fairly infrequent, as are oil pumps and alternators.
Just some constructive criticism: The video is very good, but it would be nice if you actually included removing the parts. It adds detail to what is being done and how you go about doing it. Maybe a mirror to show hidden bolts too. For example, the small diameter vacuum line to the vacuum pump is harder to get to than it seems. Instead of the vacuum hose being pulled off the nipple, I've seen the torx bolt being removed instead that holds the nipple and plastic portion (there's an o-ring at that joint) and then you remove the intake manifold with the vacuum line still on that portion.
Watching your video again. I'm getting oil blowby from that general area. 1. Any chance of it being the cam plug? 2. It doesn't look like you need to remove the vacuum pump from the video. Am I wrong? edit: 3. Is there only one on that bank?
Hello! Cam plugs do leak, as well as vacuum pump gaskets and vacuum pumps themselves. Vacuum pump does not need to be removed to remove the intake manifold. There should only be one cam plug in the rear on that side since the vacuum pump is run off the other camshaft.
@deez6686 how many miles are on the car? If the piston rings are worn, you could have too much pressure in the crankcase causing oil to leak out of seals like the oil cap.
