Hi,
I have bought the Mityvac and the run-on problem
seems to be caused by a defective shutoff valve.
This a 1988,190D, 2.5, 5 cyl...
I can see the top of the IP thru the gap between #2 &
#3 tuned air intake. That doesn't seem to be the way to go.
So I have taken the air filter off, but now find the huge air
plenum in the way. What is best way of removal of the
air plenum and continuing? Shutoff valve looks to be
mounted on top of IP. Any pitfalls? Thanks for any help.

201126 ......... original owner..
602911 ............