RDX AWD L4-2.3L Turbo (2010)
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If the engine starts, go to step 7.
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If the engine does not run, go to step 6.
6. Check to see if the fuel pump is running: Listen to the fuel filler port with the fuel fill cap removed. The fuel pump should run for 2 seconds when
the ignition switch is first turned to ON (II).
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If the pump runs, go to step 7.
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If the pump does not run, refer to the DTC troubleshooting.
7. Read the fuel pressure gauge. The pressure should be 320 -370 kPa (3.3 -3.8 kgf/cm2, 47-54 psi).
8. With the engine running, un-pinch and reconnect the vacuum hose while you watch the pressure gauge. The pressure should fall when you
connected the hose.
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If the pressure falls, and the fuel pressure was OK in step 7, the test is complete.
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If the pressure did not fall, check the vacuum line between the pressure regulator and the intake manifold. If the line is OK, replace the fuel
pressure regulator See: Fuel Delivery and Air Induction/Fuel Pressure Regulator/Service and Repair/Fuel Pressure Regulator Replacement.
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If the pressure falls, but the fuel pressure was lower than specified in step 7, check for a clogged fuel filter See: Fuel Filter/Service and Repair,
and for leaks in the fuel lines See: Fuel Delivery and Air Induction/Fuel Return Line/Testing and Inspection.
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If the pressure falls, but the fuel pressure was higher than specified in step 7, check for a pinched or clogged fuel return hose or line See: Fuel
Delivery and Air Induction/Fuel Return Line/Testing and Inspection.