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#1
10-18-2004, 07:37 PM
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Need vacuum routing diagram/pic 300 D
Hi all,
The previous "jack leg" that worked on this car, an '84 300 D auto, decided that he had a better idea on how to route the vacuum lines in an around the firewall. I need a very good vacuum diagram that shows color and where the supply lines are supposed to feed into. Or a nice color photo of someones '84 300 D showing the area around the firewall and brake booster and injector pump with the line "properly" connected would be a great help. Specifics of interest and problematic, is the plastic check valve in the brake booster line with the 2 nipples. One nipple supplies the "bleeder" valve on the top of injector pump and then the tranny modulator etc.. The other nipple supplies the other "stuff". Too much to write out. Please direct me, or someone post a nice resoulution pic if you have this model car. Thanks, Russell 
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#2
10-18-2004, 08:58 PM
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Yes I did read ALL the threads in the search area. I really need a clear pic of someones unmolested vacuum hoses properly hooked up. The diagrams I have seen are less than helpful.
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#3
10-18-2004, 09:35 PM
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Did you try this link???
Vacuum Diagrams
Or take pictures of yours and we can assist. That worked well for 1985 300SD Sady... What area is the problem located in, engine bay, passenger cabin or trunk?
__________________
ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/
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#4
10-19-2004, 08:58 AM
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Diesel Giant
What works? and what doesn't? From that, we can tell which lines need to be rearranged.
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#5
10-19-2004, 09:46 PM
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ok I have figured out most of the lines but here is a weird situation. Turn the key off, takes 5-10 seconds for engine shutdown. Vac test the shutoff valve directly and it works perfectly and hold perfect vacuum. I installed my vacuum guage between the brown supply line which feeds the shutoff valve and the supply nipple. The vacuum signal occurs when the key is in the off position but only about 5 inches of mercury, hence the slow turn off. Now it get weird. If I immediately restart the car, it idles slow like it wants to cut off because there is STILL some vacuum in the brown supply line. If I cycle the key 3-4 times off-on then start it, it bleeds the residual vacuum off and the shutoff valve is not trying to restrict fuel flow. I do know that I have a vac leak in the drivers door or somewhere in the yellow line with the black stripe. I dont think it is related, just wanted to mention.
Also what does the green line with the yellow stripe power?
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