DTC P050B-93: Cold Start Ignition Timing Performance - No operation: Action
- Using the manufacturer approved smoke test system check the intake air system is free from leakage, components are correctly installed, pipework is not loose or damaged
- Check engine vacuum system is free from leakage, components are correctly installed, valves function correctly, pipework is not loose or damaged
- Check engine crankcase breather system is free from leakage, components are correctly installed, valves function correctly, pipework is not loose or damaged
- Check air filter(s) are not blocked
- Check the intake air system is free from restrictions
- Check front end accessory drive belt and driven components for failure