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Old 03-11-2016, 02:09 PM
wwii wwii is offline
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Join Date: Dec 2015
Location: California Central Coast
Posts: 123
Quote:
Originally Posted by babymog View Post
... My .971 (W140) got the typical oil/carbon mist clog in the boost line,...
Your refering to the line to the sensor and ALDA?

Quote:
Originally Posted by babymog View Post
... Also in the .971, the wastegate defaults to open. It is open when you start the car, and unless all of the stars align and everything is happy in the computer, it will stay open. I have also had a switchover valve in the 140 leak vacuum, which again killed my boost. If you're not familiar with this system look up vacuum wastegate here, you should find lots of frustrated stories troubleshooting this system on the '90-'93 300D.
Thnx. I'm not there yet - I have a couple of other things to work out. I don't even know if the boost is or is not working- I don't have a reference - suppose I should get a gauge and tee it in.
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1992 300SD 140.134 Sold
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