You get a Hiss because it is holding vacuum, the Hiss is air rushing in.

When you add a line to the Vacuum Shut off Valve, use a clear line. If the diaphragm is ruptured inside it, you will get a mouth of eng oil. this way you will see it coming up the clear tube.

If you see no oil, then you know the shut off valve is good.

The brown line connects to the large black supply line between the Vacuum pump and the Brake Booster. this is it`s source of vacuum. the Brown line goes into the passenger compartment, and connects to the Valve on the Ignition/Steering Lock assy. then a second brown line, (which is also connected to the same valve) comes out from the passenger compartment, and connects to the Vacuum Fuel Shut off valve.

When you turn the Key to start the Engine, or to shut off the Engine, this switches Vacuum to shut off the engine, or releases vacuum so the fuel is turned so the Engine starts.

Simple???


Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Thank you so very much Charlie! Not sure how I missed it...

Well then, must be blind. I thought I was careful in tracing. I can't find the vacuum sheet I printed, P.C. off for repairs, and can't find the enhanced version on here...

So then, can I then say the booster and booster seal are good?

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Current fleet:

1985 Mercedes-Benz 280TE - Waiting for heart surgery.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016 and now looking for a new home.

1979 Mercedes-Benz 300TD - Parted out.

1964 Volkswgen Beetle - Vater's since September 1968 and undergoing a restoration.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Vacationing with her caretaker until he is in better health.