500SEL (126.037) V8-5.0L (117.963) (1984)
Fuel Pressure: Testing and Inspection
Fuel System Pressure Tests
Test Values
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Primary pressure - 5.0-5.6 bar (76-82 psi)
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Control pressure, warm-up cycle completed - 3.4-3.8 bar (49-55 psi)
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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)
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Control pressure, engine cold according to ambient temperature
warm-up compensator. Refer to charts below.
Temperature/Pressure Chart
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Chart for warm up compensator with Bosch part number ending in 068.
Temperature/Pressure Chart
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Chart for warm up compensator with Bosch part number ending in 155.
Special Tools
Pressure gauge - PN 102 589 002 100