Here's the CCV hack. BMW Crankcase Vent Valve (Cold Climate Version) - Genuine BMW 11617534237 is the cold weather CCV and 2 OEM hoses for $55ish. Then source the other 2 hoses, they can be aftermarket. +1000 x 1000. That's not even a hack its a genuine BMW ccv with 2 hoses for $56. Best deal you can find. For now I found 2 diagrams with them: 1. Secondary air pump vacuum control. Here, I changed number 7 and 10 already with 3.5mm vacume hose. Wait till weekend to change 13 and 15 as I need to remove more stuff to get to them. 2. Fuel tank breath valve. Here I changed 3 and 4 for now with 7mmx12mm fuel hose. This BMW has a failed crankcase vent valve. Also known as the oil separator, CCV. This failure has created a high vacuum situation which is causing an engine Checkout that video by Eric O here: BMW Intake Manifold Components (DISA, Vacuum, CCV, Etc) The intake manifold takes incoming air from the intake and distributes it to each cylinder. Over the years the manifolds have gotten more sophisticated and complex. Most of the additional work that it does is emissions-related - recirculating vapors back into the engine to be re-used. Buy Crankcase Vent Valve Breather Hose Kit, 5 Piece Value Kit - Compatible with BMW Vehicles - E46, E39, E60 320i, 323i, 325, 325i, 325ci, 328i, 330i, 330ci, 330xi, 525i, 528i - PCV Ventilation Separator: PCV Valves - Amazon.com FREE DELIVERY possible on eligible purchases Comes out for me at £87.58. This is for a 2005 320ci (e46) M54 engine, as far as i can tell all the parts are the same through the range and they also work for the M54 engines <2002 the only thing different with the M52 engine is the throttle body was revised so the gasket is different. As always if you are going to use the part numbers above HOW TO KNOW IF DISA VALVE IS BAD BMW E46 E39 E60 E83 Z3 Z4 E65If you have BMW and you are trying to see if you have bad DISA valve in this video we will expl .

bmw e46 ccv valve symptoms