Info

Pressures listed in Test Value Chart in bar.

928 Fuel Mixture 25

TESTING AND ADJUSTING SPECIFICATIONS FOR K-JETRONIC (1 981/1982/1983 Models) 928 S

Engine M 28.11 and M 28.12

Test Point

Electric fuel pump

Delivery rate with 1 fuel pump

Control pressure "cold" (equal to ambient temperature)

Specification

Special Instructions at least 1120 cc/30 sec.

Diagram for warm-up regulator Part No. 928.606.109.04 Bosch No. 0438.140.086 With test vacuum 450 - 550 mbar (340 - 420 mmHg)

Control pressure "warm"

Test with atmospheric pressure (without vacuum)

Connect vacuum pump to test on intake connection of warm-up regulator. With test pressure 460 -600 mbar (350 - 450 mmHg)

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