My prior post had to do with vacuum to the trans on my 81 300CD. Igot some good advice but I would also like to know the proper procedure for the adjustable rod on the vacuum regulator valve on the rear of the injector pump. I mentioned on the prior post that at idle I have 23 hg of vacuum, but any movement of the valve cover linkage my vacuum drops to zero! Any assistance for a web site or personal assistance would be appreciated. Thanks in advance, Bill.