![1 generation [2001 - 2005]](/uploads/Hyundai_Matrix_2002-2006_.jpg)
Switch off the ignition.
Test fuel pump operation by applying battery voltage to pump motor electrical connector terminals.
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NOTE The fuel pump is installed in the fuel tank, so the sound of its operation is audible only when the filler cap is removed. |
Rice. 2.210. Checking for pressure in the fuel supply hose
Make sure that the supply fuel hose is under pressure by squeezing it with your hand (Fig. 2.210).
Fuel pressure check
Rice. 2.211. Fuel pump access hatch from inside the car (rear seat folded down)
Fold a back of a back seat, then fold forward the put back seat (fig. 2.211).
Rice. 2.212. Fuel pump access hatch (open)
A screw-driver open a cover of a hatch of the fuel pump in the bottom of the car under a back seat (fig. 2.212).
To relieve pressure in the fuel lines and hoses, start the engine with the fuel pump off and wait until the engine has stopped.
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NOTE Depressurize the fuel before disconnecting the fuel line and hose to prevent fuel escaping. |
Disconnect the terminal from the negative (-) battery terminal and connect the fuel pump electrical connector.
Rice. 2.213. Connecting a pressure gauge to measure fuel pressure in the system
Connect the control pressure gauge (Fig. 2.213) to the fuel filter using an adapter. Tighten the fuel pressure gauge adapter securely.
Attach the terminal to the negative terminal ("-") of the battery.
Turn on the fuel pump by applying battery voltage to the pump electrical connector terminals.
After pressurizing the fuel, check that there are no fuel leaks from the test gauge and its connections.
Start the engine and leave it to idle.
Check the fuel supply pressure.
Rated value: 350 kPa (3.5 kgf/cm2 ) .
If the fuel supply pressure is not correct, determine the cause and correct the problem as follows.
Stop the engine and monitor the fuel pressure on the control pressure gauge: the pressure should be maintained for approximately 5 minutes. If the pressure drops, determine the rate of fall. Determine and correct the cause of the pressure drop as follows.
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NOTE When disconnecting the hose, cover the fitting with a rag to prevent fuel from escaping, as the fuel line is under residual pressure. |
Replace the o-ring on the hose fitting.
Attach the fuel hose to the fuel pump fitting and tighten the fitting.
Check for fuel leaks.
