Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- Observe the scan tool Misfire Counters or perform the Fuel Injector Balance Test to help identify a leaking fuel injector.
- A faulty component may cause the following noises: Damper located in the fuel feed pipe - Buzz/Knock/Rattle/Tick @600 to 800 RPM
- A faulty damper located in the fuel feed pipe may cause DTC P2635 or P3188 to set.
- An erratic low side fuel pressure leak-down reading may be caused by air/vapor in the fuel feed line, which can be caused by the following:
- Ambient conditions
- Engine operating conditions - Cold Start-Up/Warm/Hot
- Fuel Alcohol Content
- Fuel blend - Summer/Winter
- Fuel octane rating