Never mind. I found it. There is no sign of gas in the regulator or vac line. When I tried to pull a vacuum on the vac line with a hand pump, it wouldn't hold anything at all. The vacuum was gone before the handle was fully released.... I didn't check any further as it's dark out. I'll look at any suggestions in the morning.

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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic