2.
Is there a problem?
YES
a.
Repair or replace it. Then go to "Verification of Vehicle Repair"
NO
a.
Go to "Check Fuel Line Pressure" procedure as below.
Check air cleaner for blockage.
Is there a problem?
YES
Repair or replace it. Then go to "Verification of Vehicle Repair"
NO
Go to "Check Fuel Line Pressure" procedure as below.
Start the engine with the fuel pump disconnected to reduce the internal pressure of the fuel lines and hoses, and wait until the engine stalls before continuing.
Be sure to reduce the fuel pressure before disconnecting the fuel main pipe and hose, otherwise fuel may spray out, possibly resulting in fire or injury.
Disconnect the battery negative(-) terminal and then connect the fuel pump harness connector.
Install the fuel pressure gauge using the appropriate adapter.
Connect the battery’s negative(-) terminal.
Check that there is no fuel leak from the pressure gauge or connections.
Disconnect the vacuum hose from the pressure regulator and plug the hose end.Measure the fuel pressure at idle.
[Specification] 320 ~ 350kPa (3.26~ 3.57kg/cm², 46.4~50.7 psi)
Measure the fuel pressure when the vacuum hose is connected to the pressure regulator(while engine is running).
[Specification] 250 ~ 280kPa (2.55 ~ 2.86kg/cm², 36.3~40.6 psi)
Is the fuel pressure OK?
YES
Go to "Component Inspection" procedure
NO
In case which fuel pressure is so low, Check fuel pressure regulator, fuel pump or fuel fillter’s blockage.
In case which fuel pressure is so high, Check fuel pressure regulator or fuel pump.
Go to "Verification of Vehicle Repair" procedure
