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MFI 1 FAULT DIAGNOSIS ENGINE TUNING Circuit fault diagnosis may be carried out on all V8i Before commencing any fault diagnosis, the following Preliminary checks CAUTION: Catalyst exhaust: If engine is so will result in irreparable damage to the 1. Check that the inertia fuel shut off switch is not tripped. 2. Check fuse in main fuse panel. intake manifold. 5. Check HT cables for correct firing order and routing. 6. Check ignition timing. Only when the above checks have been carried out, See Electrical Trouble Shooting Manual. INJECTOR TESTS NOTE: Before removing any of the plugs. A leaking injector will result in the The following test may only be carried out using Leak Test Leak test with the injectors closed but pressurise to 2 . No injector should leak more than 2 drops of fuel per minute. Fuel Delivery Test Fuel delivery test with the injector open and |