Fuel Rail: Description

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: FUEL SYSTEM COMPONENTS

Courtesy of DAIMLERCHRYSLER CORP.

1 - RETURN FUEL LINE	7 - HIGH PRESSURE FUEL LINES
2 - ONE WAY VALVE	8 - FUEL RAIL PRESSURE SWITCH
3 - FUEL RAIL SOLENOID	9 - SEAL
4 - RETURN FUEL HOSE	10 - INJECTOR HOLD DOWN
5 - RETURN FUEL JUNCTION	11 - BOLT
6 - FUEL RAIL	12 - FUEL INJECTOR

WARNING: HIGH - PRESSURE FUEL LINE DELIVER DIESEL FUEL UNDER EXTREME PRESSURE FROM THE INJECTION PUMP TO THE FUEL INJECTORS. THIS MAY BE AS HIGH AS 1600BAR (23,200PSI). USE EXTREME CAUTION WHEN INSPECTING FOR HIGH - PRESSURE FUEL LEAKS. FUEL UNDER THIS AMOUNT OF PRESSURE CAN PENETRATE SKIN CAUSING PERSONAL INJURY OR DEATH. INSPECT FOR HIGH - PRESSURE LEAKS WITH A SHEET OF CARDBOARD. WEAR SAFETY GOGGLES AND ADEQUATE PROTECTIVE CLOTHING WHEN SERVICING FUEL SYSTEM.

The fuel rail is mounted to the cylinder head cover/intake manifold. The rail supplies constant high fuel pressure to the fuel injectors. See Fig 1.