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Fuel Mixture
CHECKING
FUEL
DELIVERY
RATE
FOR CONTROL
PRESSURE
CIRCUIT
Requirements
Fuel pumps in correct opera-
tional condition.
Checking
1. Connect and bleed pressure gauge.
4. Turn on ignition.
2. Set switching valve to position 3.
5. Move switching valve to position 2 and let
electric fuel pumps run exactly 1 minute by
pulling off two-pin plug on mixture control unit.
Stop by switching valve to position 3 and meas.
ure delivery rate.
Test value: 160 to 240 cc/minute.
3. Unscrew hose from Special Tool P 378 on
warm-up regulator and hold end in a measur-
ing glass with volume of at least 500 cc.
If measured value is outside of tolerances, the
cause will be in the fuel distributor. Replace fuel
distributor.
Printed in Germany
25 -14
b
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