Andrew - When I tested the vacuum on the check valve on the brake booster line I know I had a good seal on both ends, so I'm going to go ahead and replace the line. What also makes me think I have a leak there is the fact that the reading for the part of the booster line going into the brake cylinder is only 17 hg, and the reading going into the green dashpot before the transducer is only 8 hg, but my vac pump is evidently producing 20 hg at least.

I think I saw that black line you're talking about, but I thought I saw it connected to the exhaust manifold somewhere. I don't have any vacuum components on my valve cover but I do have vac lines going to my EGR which I haven't tested yet. I'm not sure if a PO modified this or if the car came without the vaccuum elements on the valve cover, I think some of them did but I'm not sure. If it used to be there, all traces have disappeared.

I will have to read about the B2 piston. I've heard of it but know nothing about it. I've read a little about the K-1 kit but I thought the symptom for needing that fix was flairing.

I've been trying to check my tranny fluid level, but I keep failing! First I read in the owner's manual that if the fluid is cold, the level will be 12 mm below where it would normally be. Well I checked it and it appeared to be WAY overfilled. I did some research and a lot of people on here said that's what the dipstick will read when the fluid is cold. Makes me wonder why the owner's manual says what it says. I checked it again today after just getting the engine up to temp., and it still read way high. I did some more research and it turns out I have to drive at least 10-15 miles before I can get an accurate reading. So I'll check it after work tomorrow. I don't suspect a fluid problem because I don't have any slipping, but I'll check to be sure.

DG, your trouble-shooting page is great and has been invaluable to me, thanks a lot.

85, I have looked over the 85 SD diagram as I figured it's the one that will relate to my car the most. I guess it is, I will just have to look a little hrder for that line.

Thanks for the help.

__________________
Ralph

1985 300D Turbo, CA model
248,650 miles and counting...