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How to Replace a Fuel Injector for a 1992 940 GL Volvo

The Volvo 900 series is a range of mid-size cars made by Volvo during the 1990s, and the 940 models were in production from 1991 to 1997. The 1992 940 GL had a four-cylinder 2.3-liter engine with electronic fuel injection. These fuel injectors deliver a precise ratio of fuel and air to the engine at high pressure. The fuel injectors on the 1992 Volvo 940 GL are on top of the engine and are accessible from the engine compartment.

Instructions

1

Remove the fuel pump relay under the dashboard and start the engine. Allow the engine to idle until it stalls to relieve the pressure in the fuel system. Turn the ignition off and replace the fuel pump relay.

2

Disconnect the negative battery cable with a socket wrench to prevent the accidental discharge of fuel. Detach the fuel lines and electrical connectors from the fuel injection manifold. Remove the vacuum hose from the fuel pressure regulator. Disconnect the fuel pressure regulator from the bracket of the fuel rail with a socket wrench.

3

Remove the retaining bolts for the fuel injection manifold with a socket wrench. Detach the fuel injection manifold and fuel injectors from the engine as an assembly. Secure the fuel injection manifold in place on a work bench and disconnect the fuel injectors from the manifold.

4

Remove the O-rings from the fuel injectors and replace them if they show signs of wear. Apply a thin layer of petroleum jelly to the O-rings, and install them onto the new fuel injectors. Connect the fuel injector to the fuel injection manifold and install this assembly onto the engine. Tighten the retaining bolts for the fuel injection manifold with a socket wrench.

5

Connect the fuel pressure regulator to the fuel rail bracket and attach the vacuum hose to the fuel pressure regulator with a socket wrench. Connect the fuel lines and electrical connectors to the fuel injection manifold. Connect the cable to negative terminal of the battery. Start the engine and check for fuel leaks.

Posted by Unknown at 8:30 AM

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Labels: 1992, 940, a, for, fuel, gl, how, injector, replace, to, volvo