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6E1–250 X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION EXCESSIVE EXHAUST EMISSIONS OR ODORS SYMPTOM DEFINITION: Step Action Value(s) Yes No 1 Was the On–Board Diagnostic (OBD) System Check — Go to Step 2 Go to OBD System Check 2 1. Perform a bulletin search. correct the condition as instructed in the bulletin. Was a bulletin found that addresses the symptom? — Go to Step 13 Go to Step 3 3 Was visual/physical check performed? — Go to Step 4 Go to Visual / Physical Check 4 Check for vacuum leaks (vacuum lines, intake Were any vacuum leaks found? — Go to Step 13 Go to Step 5 5 1. Check fuel cap for proper installation. Was a problem found? — Go to Step 13 Go to Step 6 6 1. Check the fuel pressure. Refer to Fuel System Pressure Test. Was a problem found? — Go to Step 13 Go to Step 7 7 1. Check for faulty, plugged or incorrectly installed PCV valve. 2. Verify that the PCV system is not plugged. Was a problem found? — Go to Step 13 Go to Step 8 8 Check the injector connections. If any of the injectors Was a problem found? — Go to Step 13 Go to Step 9 9 Perform the Injector Balance Test by Tech 2. Was a problem found? — Go to Step 13 Go to Step 10 10 Check for a problem with the engine cooling system. Was a problem found? — Go to Step 13 Go to Step 11 11 Check the EVAP canister for fuel loading. Refer to Was a problem found? — Go to Step 13 Go to Step 12 12 1. Remove excessive carbon build-up with a top engine cleaner. Refer to the instructions on the top 2. Perform the exhaust emission test. Does the vehicle pass the test? — System OK Go to Step 14 13 Perform the exhaust emission test. Does the vehicle pass the test? — System OK Go to Step 14 14 Does the exhaust emission test indicate excessive HC — Go to Step 15 Go to Step 16 |