MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Powertrain Control-Emissions Diagnosis

HX: Evaporative Emission (EVAP) System

Powertrain Control-Emissions Diagnosis

Ford gasoline diagnostic supplementReference 5,227 / 6,619HTML edition
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Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.

For repair verification, CARRY OUT the Smoke Machine PHASE 1 - Leak Verification Pressure Test.

GO to HX44 .

HX44 HOOK UP THE SMOKE MACHINE

Note: The smoke and air flow from the Rotunda Smoke Machine, Fuel Evaporative Emission System Tester 218-00001 or equivalent will not pass through liquid fuel. Liquid fuel may be present in the fuel tank filler pipe.

• Ignition OFF.

• Connect the smoke machine power cables to the vehicle battery. Check to see that the smoke machine power indicator lamp is on, indicating a good battery contact.

• For Explorer 3.7L, Fiesta 1.6L TiVCT, Flex 3.5L TiVCT, Focus 2.0L GDI, Fusion 2.5L, MKS 3.7L, MKT 3.7L, Taurus 3.5L TiVCT and Taurus 3.7L,

◾ Disconnect the fuel vapor to intake manifold line at the EVAP purge valve and cap the line. ◾ Connect a suitable hose adapter to the fuel vapor to intake manifold connection at the

EVAP purge valve.

• For all others:

◾ Disconnect the fuel vapor to EVAP canister line at the EVAP purge valve. ◾ Connect a suitable hose adapter to the fuel vapor to EVAP canister connection at the

EVAP purge valve.

Is the smoke machine hook up complete?

Yes

No

For leak detection, GO to HX45 .

For leak repair verification, GO to HX46 .

REFER to the smoke machine operator manual for additional instructions and for helpful tips.

HX45 CARRY OUT SMOKE MACHINE PHASE 2 - LEAK DETECTION SMOKE TEST

Note: Check the EVAP hoses, EVAP purge valve, EVAP canister vent valve, EVAP canister, fuel tank, fuel filler pipe, the fuel tank area, at the fuel filler cap or capless fuel tank filler pipe inlet for leaks. Wiggle the components and connections and look for signs of leaking smoke. Smoke under pressure may not reach a leak in the fuel tank filler pipe between the check valve and the fuel filler cap or capless fuel tank filler pipe inlet. If leaking smoke is not found, carry out a visual inspection of the fuel tank filler pipe, fuel filler cap or capless fuel tank filler pipe inlet.

• Set the Rotunda Smoke Machine, Fuel Evaporative Emission System Tester 218-00001 or equivalent to SMOKE.

• Remove the fuel filler cap or install the supplemental refueling adaptor.

• Connect the smoke supply hose nozzle tip into the suitable hose adapter.

• Ignition ON, engine OFF.

• Access the PCM and control the EVAPCV (PER) PID.

• Close the EVAP canister vent valve by commanding the EVAPCV PID to ON (100% duty cycle).

• Access the PCM and control the EVAPCP (PER) PID.

• Open the EVAP purge valve by commanding the EVAPCP PID to 100%.

• Start the smoke machine.

• Verify the connection at the EVAP purge valve is not leaking.

• If smoke does not exit the fuel tank filler pipe after the system is pressurized, command the EVAPCV PID open to purge the EVAP canister vent valve. Once smoke is seen at the EVAP canister vent valve, command the EVAPCV PID close.

Source reference 5227

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.