LEMON Manuals: Even more car manuals for everyone
Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (Engine Control System Diagnosis - 1.6L (3 Of 3) (Except HEV)) >> DTC P2188: System Too Rich At Idle (Bank 1) >> System Inspection

System Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check air leakage 

  1. Visually/physically inspect the air leakage in intake/exhaust system for following components.
    • Throttle body gasket and damage
    • Blocking in intake manifold and injector caused by any foreign substance.
  2. Has a problem found in this procedure?

    YES 

    NO 

    • Go to "Check the fuel line" as follows.

■ Check fuel pressure 

NOTE:
  1. Be cautious that Fuel is explosive and an empty fuel tank can still contain explosive gases. When working on fuel system make sure to supply adequate ventilation to the work area. Do not smoke, and keep sparks and open flames away.
  2. The fuel system remains under pressure when the engine is not running. Release fuel system pressure before disconnecting any fuel line to reduce the chance of personal injury or fire damage to vehicle components.
  1. IG "OFF" and disconnect Fuel Pump Relay in Junction Box.
  2. Start-up and wait until it stops itself.
  3. IG "OFF" and connect Fuel Pump Relay.
  4. Install the fuel pressure gauge to the delivery pipe with the fuel pressure gauge adaptor.
  5. Activate the fuel pump, and with fuel pressure applied, check that there is no fuel leakage from the pressure gauge or connection part.
  6. Measure the fuel pressure at idle.

    Specification:  350~600 kPa

  7. Is the measured fuel pressure within specifications?

    YES 

    • Go to "Check fuel leakage in injector" procedure below.

    NO 

    Condition Possible Cause
    Fuel Pressure is too low Fuel filter, fuel pressure regulator, in-tank fuel hose or the fuel pump
    Fuel Pressure is too high Fuel pressure regulator, hose or pipe

■ Check fuel leakage in injector 

  1. IG "OFF" after checking the fuel pressure test.
  2. Stop engine and check for a change in the fuel pressure gauge reading for 5 minutes.

    Specification:  After engine stops, fuel gauge reading is maintained for 5 minutes.

  3. Is the fuel gauge reading maintained?

    YES 

    • Clear DTC and Test-drive under enable conditions above-mentioned. After the test, If this DTC is set, go to "Inspection & Repair" procedure. If not, troubleshooting is completed.

    NO 

scientia non olet · About LEMON Manuals