Inspecting & Cleaning VANOS - N42/N46 VALVETRONIC Retainer Spring Replacement [PART #3]

In this video series I diagnose and replace a broken retainer torsion spring that holds the intermediate lever pressed against the VALVETRONIC eccentric shaft on a N42 engine. I also disassemble and clean the VANOS unit and confirm the fix with INPA rough running menu.

PART #3:
0:00 Disassembling cleaning VALVETRONIC.
0:47 Installing new torsion springs without special tools.
6:22 Reinstalling VALVETRONIC bracket assembly.
11:27 Disassembling the VANOS unit.
18:48 Inspecting the VANOS unit for wear and damage.
24:01 How VANOS unit works?
26:44 Reassembling the VANOS unit.
28:59 Timing the engine.
36:18 Installing valve cover, wiring harness and ignition coils.
39:06 VALVETRONIC initialization and starting the engine.
41:35 Resetting adaptations, checking rough running cylinders and correct VANOS position with INPA.
45:53 Test drive and conclusion.

After chain replacement (   • N42/N46 Chain Replacement DIY Complet...  ) I noticed that there are some ticking noises during throttle body to VALVETRONIC operation transition. During this transition the engine stalls but then recovers to "normal" idle RPM.

This car is 2001 E46 316ti Compact BMW with 200.000km on the odometer.

PARTS:
- VANOS bolts: 11367500574
- Valvetronic Retainer Springs: 11377513873
- Spark Plug Cylinder O-rings: 11377514007, 11377514008
- Valvetronic Servo Motor Gasket: 11377501015

TOOLS:
- N42/N46 Timing tool kit: https://cutt.ly/yhVmCJF
- 3D printed 0.6Nm torque wrench for pretensioning: http://bimmerzen.com/files/stl/BMW_N4...

RELATED VIDEOS:
- Disassembling and Cleaning VALVETRONIC with no special tools:    • Disassembling and Cleaning with no sp...  
- Inserting the TDC flywheel locking pin:    • Timing the engine - BMW N42/N46 Chain...  

SERVICE MANUALS:
Always read and study the service manual for your vehicle before attempting any repair procedures on your car! BMW service manual are available here (free registration is required): https://www.newtis.info/tisv2/a/en/

DISCLAIMER:
BimmerZen assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. BimmerZen recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of BimmerZen , no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not BimmerZen.