Dodge Durango

 Service Manual

Fuel System » Fuel delivery system » Description and operation
Fuel tank filler tube cap

DESCRIPTION

The plastic fuel tank filler tube cap is threaded onto the end of the fuel fill tube. Certain models are equipped with a 1/4 turn cap.

OPERATION

The loss of any fuel or vapor out of fuel filler tube is prevented by the use of a pressure-vacuum fuel fill cap. Relief valves inside the cap will release fuel tank pressure at predetermined pressures. Fuel tank vacuum will also be released at predetermined values.

This cap must be replaced by a similar unit if replacement is necessary. This is in order for the system to remain effective.

Fig. 6 Fuel Injector Rail-4.7L V-8 Engine

1 - MOUNTING BOLTS (4)

2 - INJ.#7

3 - INJ.#5

4 - QUICK-CONNECT FITTING

5 - INJ.#3

6 - FUEL INJECTOR RAIL

7 - INJ.#1

8 - CONNECTOR TUBE

9 - INJ.#2

10 - INJ.#4

11 - INJ.#6

12 - INJ.#8

13 - PRESSURE TEST PORT CAP

CAUTION: Remove fill cap before servicing any fuel system component to relieve tank pressure. If equipped with a California emissions package and a Leak Detection Pump (LDP), the cap must be tightened securely. If cap is left loose, a Diagnostic Trouble Code (DTC) may be set.

Pcm vin reprogramming

Fuel delivery system

Fuel pump module

Fuel pump

Fuel gauge sending unit

Fuel filter/fuel pressure regulator

Fuel tank

Fuel injectors

Fuel rail-3.9/5.2/5.9L engines

Fuel injector rail-4.7L engine

Fuel tank filler tube cap

Fuel tubes/lines/hoses and clamps

Quick-connect fittings