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Crown Victoria, Grand Marquis, Marauder & Town Car

  1. Testing EVAP Canister & Canister Vent Solenoid Flow -  Connect Evaporative Emissions System Leak Tester (134-00056) to test port. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, EVAP canister and vent solenoid are not blocked, go to step  9. If pressure does not drop immediately, go to next step.

  2. Testing Canister Vent Solenoid Remote Vent Hose Assembly For Blockage

    Disconnect canister vent solenoid remote vent hose from in-line connector. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace canister vent solenoid remote vent hose. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If pressure does not drop immediately, go to next step.

  3. Testing Canister Vent Solenoid Hose Assembly For Blockage

    Disconnect canister vent solenoid hose assembly. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace canister vent solenoid hose assembly. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If pressure does not drop immediately, go to next step.

  4. Testing Canister Vent Solenoid For Blockage

    Remove canister vent solenoid. Canister vent solenoid is under rear of vehicle, next to EVAP canister. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace canister vent solenoid. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, go to next step.

  5. Testing EVAP Canister

    Disconnect EVAP canister tube at canister that runs from EVAP canister to fuel tank. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace EVAP canister. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, go to next step.

  6. Testing EVAP Canister Tube

    Disconnect EVAP canister tube at fuel vapor valve tube assembly that runs from EVAP canister to fuel tank. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace EVAP canister tube. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, go to next step.

  7. Testing EVAP Canister Purge Outlet Tube

    Disconnect EVAP canister purge outlet tube at fuel vapor valve tube assembly that runs from EVAP purge valve to fuel tank. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, go to step  9. If pressure does not drop immediately, go to next step.

  8. Testing Evaporative Emissions Test Port

    Disconnect evaporative emissions test port from EVAP canister purge outlet tube. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace EVAP canister purge outlet tube. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, replace evaporative emissions test port. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.

  9. Testing Fuel Vapor Valve Tube Assembly

    Disconnect EVAP canister purge outlet tube at fuel vapor valve tube assembly. Connect EVAP tester to fuel filler tube. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, reconnect all components. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, replace fuel vapor valve tube assembly. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.
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