Fuel System
WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
A fuel system noise can be identified by one of the following conditions:
- Loud knock (Rap) type sound with rough idle (vibration and smoke
- This condition can be caused by one of the following:
- Alternative fuel or fuel contamination. Refer to DIESEL FUEL CONTAMINATION TESTING PROCEDURE and perform the DIESEL FUEL CONTAMINATION TEST procedure. .
- There may be air in the fuel system. This requires checking and correction.
- Fuel Injection Pump phasing may be incorrect. Check the Fuel Injection Pump phasing if necessary. to find the timing procedure. Refer to PUMP, Fuel Injection , Installation .
- Excessive pressure in the high pressure side of the system. This should be accompanied by a fault.
- The fuel injectors may be stuck or have low opening pressure. This requires replacement of defective injectors. A cylinder cut out test or mechanical blocking of injectors (injector block off (special tool #9011, Adapter, Fuel Pressure Test)) can be used to identify failed injectors.