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Tony,
I agree about the lack clarity, a worldwide convention would be great. I refer to front as towards driver, rear towards rear bumper.
The issue Petekz and I have had is lean mix with engine load… so reduced intake vacuum not having an effect on WUR/control pressure
I was thinking it was an improper routing of vacuum lines BUT I’ve tried to different (appropriate) routing of lines and they act as they should. Higher vacuum at idle, reduced vacuum with throttle increase.
Regarding vacuum diagrams, I’ve tried two ways of common orientations. From port at front of engine to T at decel to TV to WUR
From drivers side of engine lower port to TV to WUR this one seems to pull a lower volume of air
So my WUR gets vacuum at idle, and the vacuum decreases at idle but the WUR doesn’t respond unless I disconnect the vacuum hose, at that point control pressure will drop.
You performed some work on this WUR while the car was with the previous owner SkiVT
But I’m not if it was a rebuild or just a tune. I was thinking I would pull it apart to see if the vacuum pin is hanging up or the diaphragm was inhibited
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