IT HAS BEEN POINTED OUT THAT I AM TURNING THE HUB AND NOT THE VANOS SPLINED SHAFT IN THIS VIDEO. Apologies if the description is misleading.
Here is a better way of finding the old sweet spot
• Dive Into The S62 Vano...
Part 2 to this video can be found at the end of this one.
Sometimes, more often than I would like I get E39 M5s with Vanos problems and even more often than not the problems are caused by poor workmanship from other "mechanics". This really nice E39 M5 has been brought to have the the exhaust vanos problem cured on both banks. The intake is in great order.
I found that the bank 1 Vanos was not fitted correctly (more about that in part 2) and bank 2 had a problem with a sticking vanos sprocket internals and a leaking teflon seal on the exhaust actuator piston. In the video I cover the opposite bank without leaking pistons.
If you need an overview of how this thing works on the S62 engine then I think you will find this brief video interesting.
As ever thank you all for your amazing support.
#bmw #s62 #vanos #e39 #e39m5 #m5 #bmwmechanic #bmwlovers #howto #carmechanic #mechanic #mperformance
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00:00 Introduction
01:42 Spark plugs are black - not good on an S62
02:15 Compression test carried out
02:51 Compression test results and cylinder 5 score
04:25 Cylinder leakage test carried out - note the loss due to very close valve overlap. Pushing back against the pressure to close the valves resulted in a good result
05:17 ISTA live data showing both banks vanos exhaust
05:58 Discussing why we have a huge fuelling issue despite good compression, no fuel leaks from injectors and little if any cylinder leakage
07:03 Removing plenum chamber
07:14 Removing bank 2 hydraulic unit
08:00 Solenoid removal tips
08:53 How to support the hydraulic unit upon removal
09:23 How to remove vanos actuator left hand threaded shank
09:42 Using a rubber plug to test the vanos actuator pistons teflon seals for leaks
10:28 How to check Vanos solenoid resistance
10:47 Discovering butchery and the most likely reason why the vanos exhaust is not working properly. Wire almost severed in two
12:10 New fuel and oil proof wire soldered in place to repair the butchery
12:55 Vanos system and how it works - parts overview bench layout
14:02 A demo of how to find the sweet spot when timing the vanos wheels to the actuator gears
17:04 Coming in part 2 - how to actually time the camshafts, locking the crank and fitting new teflons to the pistons