Quote:
Originally Posted by SaltyNC
Glad to be of assistance. If the car was warm when the tech did the PPI, it would be tough for them to identify the VANOS by listening to it. They would have to remove the valve cover, and I don't think that is normally done on a PPI. It seems like VANOS work is required eventually on most of the S54's, so it more than likely would have eventually had to have been addressed regardless.
When we did the VANOS on my S54, we did everything. We replaced all seals, we replaced the oil pump disk with the smaller holes, replaced the bolts and used Loctite, installed anti-rattle kit, and used the "springs" from the S65 engine, and swapped the VANOS solenoid with one that Beisan epoxies to reduce solder failures. Now, I don't worry about the VANOS at all, and the car was much smoother and more powerful after the upgrade. I had an RPM dip when I would crank it in the morning so much that I learned to give it a little extra throttle to keep the RPMs up. That went away completely after the VANOS upgrade.
Good luck with your VANOS repair.
Salty
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+1 to everything Salty said here - bottom line is that a VANOS refresh along these lines, as well as a valve lash adjustment, is just a good thing to do with a new-to-you S54.
It's also not that difficult if you're not pulling the cams, just time-consuming.