I just finished putting a new JDR MR DV in my VIII. I was in the process of taking out the air box, and I noticed a vacuum hose laying in the space behind the left headlight and in front of the air box & sprayer bottle. Totally disconnected, just laying on the headlight hardware. I did a pressure test on the car last weekend (and found the leaky stock DV), but didn't notice it if it was there. I figure it has been there possibly since then?

I looked around quite a bit, and didn't see anything out of sorts. I've done a number of pressure tests on the thing. The car has been running ok, and with the new DV runs even better.

Is there any resource that shows the VIII's vacuum line dimensions so I can take another look? It is 3/8" hose, amost exactly 12" long.

 

Maybe post some pics.That may help.

 

There's not much to see, a vacuum hose in the engine bay right behind the driver's headlight. It's not like I found one with one end swinging in the wind. The whole thing was laying there like it was put there on purpose. It has no markings on it.

I guess I'm going to need to make time to trace all the vacuum lines in detail per the diagram under the hood again. I looked for 20 minutes last night and didn't see anything out of the ordinary.