CFI unit (1.6 and 1.8 litre (R6A type) CVH) - removal and refitting

Caution: Refer to the precautions in Section 1 before proceeding. A new gasket must be used on refitting.

Removal
1 Disconnect the battery negative lead.

2 Remove the air cleaner assembly.

3 Depressurise the fuel system and disconnect the fuel inlet pipe from the CFI unit.

4 Disconnect the fuel return pipe from the CFI unit. Be prepared for fuel spillage.

5 Disconnect the throttle cable from the linkage on the CFI unit.

6 On 1.6 litre models, either partially drain the cooling system or clamp the coolant hoses as close as possible to the CFI unit to minimise coolant loss, then disconnect the hoses from the unit.

7 Disconnect the wiring plugs for the throttle position sensor, throttle valve control motor, fuel injector and, on 1.6 litre models, the air charge temperature sensor.

8 Disconnect the vacuum pipe from the CFI unit.

9 Unscrew the four (1.6 litre), or three (1.8 litre) securing bolts, and lift the CFI unit from the inlet manifold (see illustration). Recover the gasket.

19.9 CFI unit securing bolts (arrowed) - 1.6 litre CVH
19.9 CFI unit securing bolts (arrowed) - 1.6 litre CVH

Refitting
10 Refitting is a reversal of removal, bearing in mind the following points.

11 Ensure that all mating faces are clean, and use a new gasket.

12 Top-up the cooling system.

13 On completion, turn the ignition on and off five times to pressurise the system, and check for fuel leaks.

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