Operation CHARM: Car repair manuals for everyone.

Fuel Pump

CIS-E FUEL PRESSURE

System Operating Pressure (cold or warm) 90 - 93 psi. (6.2 - 6.4 bar)

LOWER CHAMBER PRESSURE

Normal Operating Temp. 5.8 psi. (0.4 bar) below measured system pressure

Idling 68°F (20°C) 7.5 psi. (0.5 bar) below measured system pressure

Acceleration Enrichment 68°F (20°C) min. 55 psi. (3.8 bar)

Full Load Enrichment (Normal Temp) approx. 7.5 psi. (0.5 bar) below Acceleration Enrichment pressure

Decel. Fuel cutoff Same as system pressure

Residual Pressure (After 30 Min.) 40.5 psi. (2.8 bar)

FUEL QUANTITY COMPARISON TEST VALUES

Maximum Difference At Idle [1] .4 cc/min.
Maximum Difference At Partial Load [2] 4.0 cc/min.
Maximum Difference At Full Load [3] 10.0 cc/min.

[1] Air Flow Sensor Plate Depressed To Attain Approx. 4.0 cc/min.
[2] Air Flow Sensor Plate Depressed To Attain Approx. 30 cc/min.
[3] Air Flow Sensor Plate Depressed To Attain Approx. 100 cc/min.

FUEL INJECTORS

Fuel Injector Opening Pressure (New) 62 - 66 psi. (4.3 - 4.6 bar)
Fuel Injector Opening Pressure (Used) 53 psi. min. (3.7 bar)

FUEL PUMP

Fuel Delivery Volume [1] approx. 1 liter withing 40 sec.
Fuel Pump Pressure [2] Between 29 - 58 psi. (2 and 4 bar)

[1] Slightly more than 1 qt. withing 40 sec.
[2] Measured at fuel pump (M 3/1)