Genuine Hyundai Excel Fuel Pump

Hyundai Excel Fuel Pump Parts Questions & Answers

• Pump-Fuel
  31111-23001
  Q: How do you remove and replace a fuel pump in Hyundai Excel?

  A: For carbureted models with a mechanical fuel pump, start by disconnecting the battery cable and removing the Fuel Tank filler cap to release pressure. Then, remove the air cleaner assembly and raise the front of the vehicle, securing it with jackstands. From underneath the engine, disconnect the fuel inlet, outlet, and return hoses from the fuel pump, and from above, remove the fuel pump mounting bolts. Carefully detach the fuel pump, gaskets, and insulator, scraping off old gasket material. Inspect the hoses and replace if necessary before installing with new gaskets. For fuel-injected models with an electric fuel pump, first relieve fuel system pressure and disconnect the negative battery cable. Depending on the model year, remove the fuel tank or the rear seat cushion to access the fuel pump. Proceed to remove the fuel pump assembly, disconnecting the fuel pump/fuel level sending unit electrical connector and the fuel supply line fitting. Remove the pump from the tank, making sure to angle it properly to avoid damaging the float arm. Inspect components for damage, then follow the reverse procedure for installation. For high-pressure fuel pumps in 2012 and later models, start by relieving fuel system pressure and disconnecting the pressure regulator electrical connector and the fuel supply line quick-connect fitting. Utilize special tools to remove the nut and high-pressure fuel pump, disconnect electrical connectors, remove the junction block and high-pressure fuel pipe, and then remove the pump from the cylinder head. Apply engine oil to the pump O-ring before installation and ensure proper torque on the bolts. Finally, start the engine and check for fuel leaks.
• Pump-Fuel
  31111-23100
  Q: How to check the fuel pump?

  A: If you suspect insufficient fuel delivery, first inspect all fuel lines to rule out any leaks. In the case of carbureted models with a mechanical fuel pump, start by removing the air cleaner and locating the fuel pump on the rear side of the cylinder head. Check for fuel or oil leakage from the breather hole; if present, the pump may be defective. To perform a fuel pump output check, connect a remote starter switch, or with an assistant's help, detach the fuel outlet hose from the Carburetor and direct it into a container while cranking the engine. If fuel is emitted in spurts, the pump is operating properly. For carbureted models, also check the vacuum by attaching a vacuum gauge to the fuel pump's inlet fitting while cranking the engine. If the vacuum is steady, the pump's inlet valve is working. In the case of fuel-injected models with an electric fuel pump, perform a preliminary check by listening for the pump's sound when the ignition key is turned on. If the pump doesn't operate, use a fused jumper wire to apply battery voltage to the fuel pump test connector. If the pump still doesn't work, replace it. For fuel pressure checks, use specialized fuel pressure gauges and adapters. On 1990 through 1999 models, relieve fuel system pressure, disconnect the fuel hose, and install a gauge. Check for leaks and record the fuel pressure reading. On 2000 through 2011 models, tee into the fuel system between the fuel supply line and Fuel Rail using a special adapter and gauge. On 2012 and later models, relieve fuel pressure, insert a special adapter in the fuel supply line, and connect a pressure gauge. Compare the indicated fuel pressure readings with specifications. After testing, relieve system fuel pressure, reconnect the battery terminal cable, and start the engine while checking for fuel leaks.