Testing and Inspection of fuel system pressure for 1982 Mercedes Benz 380SL (107 Chassis) V8-3839cc 3.8L SOHC (116)
Test Values
Primary pressure – 5.0-5.6 bar (76-82 psi )
Control pressure, warm-up cycle completed – 3.4-3.8 bar (49-55 psi )
Acceleration enrichment with 500 mbar (15 in. Hg. )vacuum applied to lower connection of warm-up compensator with engine warm – 1.4-1.8 bar (20-26 psi )
Control pressure, engine cold according to ambient temperature warm-up compensator. Refer to charts below.
Chart for warm up compensator with Bosch part number ending in 068 .
Chart for warm up compensator with Bosch part number ending in 155 .
Use 12 AWG electrical wire
Two single pole plugs – Part No. 004 545 84 88
Conventional Tools
Digital multimeter (volt-ohmmeter) – e.g. Sun Electric DMM-5
^ Connection 1 = hose to fuel distributor
^ Connection 2 = hose to pressure gauge
^ Connection 3 = hose to disconnected control pressure line
Test Conditions: Ignition system must be in good working order, idle speed, and ignition timing must be set to specification. ^ Fig.5 – 37 = Thermo-vacuum valve 50°C (122°F) , red or 70°C (158°F) , yellow.

Source

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