Genuine Hyundai Excel Carburetor

Hyundai Excel Carburetor Parts Questions & Experts Answers

• Carburetor Assembly
  32110-21330
  Q: How to diagnose and overhaul a carburetor on Hyundai Excel?

  A: A thorough road test and check of carburetor adjustments should be done before any major carburetor service work. Specifications for some adjustments are listed on the Vehicle Emissions Control Information (VECI) label found in the engine compartment. Carburetor problems usually show up as flooding, hard starting, stalling, severe backfiring and poor acceleration. A carburetor that's leaking fuel or covered with wet looking deposits definitely needs attention. Some performance complaints directed at the carburetor are actually a result of loose, out-of-adjustment or malfunctioning engine or electrical components. Others develop when vacuum hoses leak, are disconnected or are incorrectly routed. The proper approach to analyzing carburetor problems should include inspecting all vacuum hoses and actuators for leaks and correct installation, tightening the intake manifold and carburetor mounting nuts/bolts evenly and securely, performing a cylinder compression test, cleaning or replacing the spark plugs as necessary, checking the spark plug wires, inspecting the ignition primary wires, checking the ignition timing (following the instructions printed on the Vehicle Emissions Control Information label), checking the Fuel Pump pressure/volume, checking the heat control valve in the air cleaner for proper operation, checking/replacing the air filter element, checking the PCV system, checking/replacing the Fuel Filter. Also, the strainer in the tank could be restricted, checking for a plugged exhaust system, checking EGR valve operation, checking the choke-it should be completely open at normal engine operating temperature, checking for fuel leaks and kinked or dented fuel lines, checking accelerator pump operation with the engine off, checking for incorrect fuel or bad gasoline, checking the valve clearances and camshaft lobe lift, and having a dealer service department or repair shop check the electronic engine and carburetor controls. Diagnosing carburetor problems may require that the engine be started and run with the air cleaner off. While running the engine without the air cleaner, backfires are possible. This situation is likely to occur if the carburetor is malfunctioning, but just the removal of the air cleaner can lean the fuel/air mixture enough to produce an engine backfire.Overhaul: Once it's determined that the carburetor needs an overhaul, several options are available. If you're going to attempt to overhaul the carburetor yourself, first obtain a good quality carburetor rebuild kit (which will include all necessary gaskets, internal parts, instructions and a parts list). You'll also need some special solvent and a means of blowing out the internal passages of the carburetor with air. An alternative is to obtain a new or rebuilt carburetor. They are readily available from dealers and auto parts stores. Make absolutely sure the exchange carburetor is identical to the original. A tag is usually attached to the top of the carburetor or a number is stamped on the float bowl. It will help determine the exact type of carburetor you have. When obtaining a rebuilt carburetor or a rebuild kit, make sure the kit or carburetor matches your application exactly. Seemingly insignificant differences can make a large difference in engine performance. If you choose to overhaul your own carburetor, allow enough time to disassemble it carefully, soak the necessary parts in the cleaning solvent (usually for at least one-half day or according to the instructions listed on the carburetor cleaner) and reassemble it, which will usually take much longer than disassembly. When disassembling the carburetor, match each part with the illustration in the carburetor kit and lay the parts out in order on a clean work surface. Overhauls by inexperienced mechanics can result in an engine which runs poorly or not at all. To avoid this, use care and patience when disassembling the carburetor so you can reassemble it correctly. Because carburetor designs are constantly modified by the manufacturer in order to meet increasingly more stringent emissions regulations, it isn't feasible to include a step-by-step overhaul of each type. You'll receive a detailed, well illustrated set of instructions with any carburetor overhaul kit; they will apply in a more specific manner to the carburetor on your vehicle.
• Carburetor Assembly
  32110-21340
  Q: How can you diagnose and adjust a malfunctioning carburetor in Hyundai Excel?

  A: If your vehicle's engine is hard to start or does not start at all, has an unstable idle or poor driveability and you suspect the carburetor is malfunctioning, it's best to take the vehicle to a dealer service department with the necessary Feedback Carburetor equipment for diagnosis. The following procedures are intended to help the home mechanic verify proper operation of components, make minor adjustments, and replace some components, but are not troubleshooting procedures. Idle mixture adjustment requires an infrared gas analyzer, which should be performed by a dealer service department or properly equipped repair facility. Inspect the vacuum hoses and idle-up control solenoid harness for proper connections, and check the idle-up actuator hose for cracks before testing. Detach the vacuum hose from the idle-up actuator, attach a vacuum pump, and hook up a tachometer. Start the engine, apply 11.8 in-Hg vacuum, and observe engine speed; if it does not increase, replace the idle-up actuator. For replacement, remove the throttle return spring and idle-up actuator attaching screws, detach the actuator rod, install the new actuator, and adjust it. Ensure the curb idle speed is set before unbolting the solenoid mounting bracket and connecting jumper wires to test the solenoid. Open the throttle slightly to reach about 2000 rpm, note the engine speed, and adjust if necessary. For air conditioning load adjustment, hook up a tachometer, start the engine, turn on the air conditioner, and adjust the idle speed with the throttle adjusting screw if out of specification. Check the solenoid valve coil with an ohmmeter for resistance; if not as specified, replace it. For solenoid valve checks, unplug the connector, measure resistance, and replace if necessary. To remove solenoid valves, detach the wire harness and remove the valve from the float cover. For throttle position sensor checks, unplug the connector, measure resistance, and verify smooth changes as the throttle valve is turned. Adjust the sensor if necessary, ensuring the Throttle Cable free play is correct. For dash pot checks on later models, start the engine, warm it up, and adjust the dash pot setting if idle speed is not specified. Verify electric choke alignment and operation, checking for proper opening as the engine warms. For choke breaker checks, ensure the choke is fully closed before starting and that it opens slightly after starting. Measure choke valve-to-bore clearance and seek professional adjustment if out of specification. For fast idle checks, warm the coolant, ensure all accessories are off, and adjust the fast idle speed as needed. Finally, inspect the choke heater for proper resistance and replace the bimetal assembly if necessary.
• Carburetor Assembly
  32110-21350
  Q: How to remove and install a carburetor on Hyundai Excel?

  A: Remove the fuel filler cap to relieve fuel tank pressure. Remove the air cleaner assembly. Disconnect the Throttle Cable from the throttle lever. If the vehicle is equipped with an automatic transmission, disconnect the TV cable from the throttle lever. Clearly label all vacuum hoses and fittings, then disconnect the hoses. Disconnect the fuel line from the carburetor. Label the wires and terminals, then unplug all wire harness connectors. Remove the mounting bolts and detach the carburetor from the intake manifold. The bolts extend all the way through the carburetor. Remove the carburetor mounting gasket. Stuff a shop rag into the intake manifold opening.Installation: Use a gasket scraper to remove all traces of gasket material and sealant from the intake manifold (and the carburetor if it's being reinstalled), then remove the shop rag from the manifold openings. Clean the mating surfaces with lacquer thinner or acetone. Place a new gasket on the intake manifold. Position the carburetor on the gasket and install the mounting fasteners. To prevent carburetor distortion or damage, tighten the fasteners in a criss-cross pattern, 1/4-tum at a time, to the torque. The remaining installation steps are the reverse of removal. Check and, if necessary, adjust the idle speed. Start the engine and check carefully for fuel leaks.