Question about 1985 Mercedes-Benz 190
Rbbnsent: Let me see if I can help you.Fird, your vacuum lines are color coded if you look closely. As they age, some of them get difficult to differentiate from. One place where you can positively ID them, is where the line has not been exposed to the elements. That is where they have been inside a vacuum hose.
Starting off, the vacuum line which shuts off the engine is a brown/blue line it goes to a diaphragm that has the fitting facing parallel to the pump body (runs parallel to the ground) Hook the line into the diaphragm.
Next, you have a vacuum hose which has a check valve on it.
Connect this one to the fitting which runs straight up.
There should be a white line near by. Hook the line up to the fitting just behind the one you just hooked up.
There should be a Black line going into the back of the pump.
Alright, coming off the vacuum pump, you have a fitting which should 4 lines excluding the vacuum source.
Now the vacuum source should have a check valve in line with it.
The following colors should be going into this "T"
White, white/blue, green, white/black.
Going back to the injection pump: Coming off the line which had the check valve, one direction is white/violet/brown and the other direction which heads off in the same direction as the front of the motor, is black.
The Black line coming out of the back of the pump hits a "T" which goes to a check valve and it hits another "T"
Coming off the side of that "T" is a white/green
I'm pretty sure, I have far exceeded the number of vacuum hoses which you found disconnected.
I hope I have answered you question thoroughly.
I happen to drive a Mercedes Diesel (81 300TD wagon) I love it!
Let me know how you make out. Mercedes Diesel are a specialty of mine!
Posted on Apr 24, 2009
After oil change the oil pressure drops when warmed up at idle.did not before the oil change and i am using 15/40 oil castrol.afeter market filter. 1985 190d
Posted on Sep 06, 2011
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Posted on Jan 02, 2017
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