Question about Cars & Trucks
Posted by Anonymous on
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Posted on Jan 02, 2017
neto 190D: You are asking about a vacuum diaphragm?
I'm going to take a WAG.. Your engine won't shut
down with the key?
If so, he is the way you find out:
In your injection pump, the vacuum diaphragm which kills the engine is the one which has the fitting pointing parallel to the ground.
The vacuum line which serves it is a brown/blue
To check the system, first check for vacuum in the line. Run the engine for a minute or so. Cap off the brown/blue line.
Turn the ignition switch off and then with hose in hand, uncap it and you should hear a hissing sound. If you have a vacuum guage, obviously, use it for the test, you need a minimum of 10 inches to kill it.
To test the pump diaphragm, you can rig a vacuum line to a known vacuum source close to the main "T". Run the engine and with the line connected to the diaphragm, connect it to the good vacuum source, if it kill the engine, the diaphragm is good. If you have a hand vacuum pump it would be more ideal, because you could check the diaphragm for small leaks.
If the diaphragm is bad, it is easy to replace on the pump.
The shutoff diaphragm lists for $86.00
Is my shot in the dark correct?
Even though I am a Nissan Master tech, I also specialize in Mercedes-Benz and specifically Diesels, so if you need help, I'm here. I went through a few Mercedes Schools and have been swinging Iron in Mercedes since the 70's
I might be a little more informative than the public library.
Posted on Apr 24, 2009
The best deal in town is Alldatadiy.com
I'm lucky yo get it for free at work.
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BTW, everything is print-able for the whole year.
Posted on Jul 15, 2009
Squirt some WD40 around the swtich to let it leak in behind. Wipe off the excess. Your window will work again. Done this several times on several old MBZs.
Posted on Dec 26, 2009
Aux heat pump maybe failing. Its on the passenger side by the battery. Follow the hoses. Its moves water to the heater core.
Posted on May 14, 2010
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