Oil caked up in intake chamber.

[rvaughnp]

2013 X5 E70 35i


Changing out the HPFP and found this after taking off the intake manifold.
Had also found a little oil in the plastic pipe that comes up form the cooler and over to the TB.

What could be causing that?

[andrewwynn]

Direct injection. No fuel vapor in the intake ports to clean off the carbon from emissions control that pulls oil into the intake to be burned. It's normal.

[Diesel Spectre]

Originally Posted by andrewwynn

It's normal.

He spelled “stupid” wrong. Other than that, everything he said is correct.

[rvaughnp]

Lol.
Cool. Yeah, I haven’t lost or ever have lost oil between oil changes. Just not used to seeing that.
But with direct injection… that makes since.

Thanks much.

[Diesel Spectre]

Catch cans are the standard mitigation. I don’t personally like them but some (provent?) are actually engineered to perform the function of eliminating oil in the intake. They don’t however, limit the contaminants from egr systems and the aforementioned “no fuel in the intake”. For those, water/meth injection is the preference.

[andrewwynn]

Originally Posted by Diesel Spectre

He spelled “stupid” wrong. Other than that, everything he said is correct.

Awesome.

Stupid is the new normal.

At least now both our cars are n55 which you can Walnut blast in an afternoon DIY.

Wife's previous car was n63. Step one to clean the intakes (bmw recommends every 30,000 miles) is remove engine from car! I'm not even kidding