Here's my question for you folks... I have a similar problem (87 SDL) that I am searching the forums for...

I have a handheld vacuum pressure gauge...

How do I measure boost? Pull a line going to the ALDA and measure it?

I'm kinda assuming I'll be needing to replace some dashpots, and that big blue vacuum thing... check for leaks etc... But I'm unsure what I'm looking for as far as inches HG if I hook up my gauge and start testing parts....

Thanks,
Bill

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'87 300SDL, intensely modified Greasecar setup, with nickle plated heat exchanger, 3 valve setup, 312,000 miles
'95 Suburban diesel, Greasecar basics, 16 plate heat exchanger, mercedes fuel lines, Racor filter
'85 Renault Alliance converted full electric vehicle