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 #2:
0:36 Locking the intake VANOS unit
1:08 Starting the engine with both VANOS units locked - Will there be startup rattle?
2:38 Removing intake VANOS unit
6:53 Removing exhaust VANOS unit
8:59 Removing VALVETRONIC system assembly without special tools using zip ties
15:41 Inspecting cylinder head and rocker arm and VALVETRONIC components damage
18:26 Removing VALVETRONIC torsion retainer springs without special tools
24:15 Inspecting broken VALVETRONIC spring and observing the wear on springs and intermediate levers
27:09 Disassembling and cleaning VALVETRONIC
After chain replacement (https://youtu.be/Pi9fWWNf0gA) 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
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.