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2005 colorado fuel tank vent valve

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2004 Chevrolet Chevy K Silverado – 4WD Evaporative Emission (EVAP) Canister Vent Solenoid Valve Replacement Pickup

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Evaporative Emission (EVAP) Canister Vent Solenoid Valve Replacement Pickup Removal Procedure Important Clean the evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination. 1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 2. Remove the harness clip from the canister vent solenoid (CVS) line. 3. Disconnect the CVS electrical connector. 2004 Chevrolet Chevy K Silverado – 4WD 4. If the vehicle is equipped with a 6 ft box, disconnect the EVAP CVS line from the canister. 5. Remove the CVS clip from the frame crossmember. 6. Push in the retainer and remove the CVS from the fuel tank clip. 7. If the vehicle is equipped with a 8 ft box, disconnect the EVAP CVS line from the canister. 8. Remove the CVS clip from the frame crossmember. 9. Push in the retainer and remove the CVS from the fuel tank clip. Installation Procedure 1. If the vehicle is equipped with a 8 ft box, install the CVS to the fuel tank until the clip engages. Important On vehicles equipped with a 8 ft box, the CVS line is routed below the frame crossmember. 2. Install the CVS clip to the frame crossmember. 3. Connect the EVAP CVS line to the canister. 4. If the vehicle is equipped with a 6 ft box, install the CVS to the fuel tank until the clip engages. Important On vehicles equipped with a 6 ft box, the CVS line is routed above the frame crossmember. 5. Install the CVS clip to the frame crossmember. 6. Connect the EVAP CVS line to the canister. 7. Connect the CVS electrical connector. 8. Install the harness clip to the canister vent solenoid (CVS) line. 9. Lower the vehicle.

DTC P0446 (Restricted/Blocked EVAP Vent Path) Set, Check Engine Light On (Replace Evaporative Emission (EVAP) Vent Valve Solenoid Assembly and Add/Relocate Filter Box Using Service Kit)

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Tighten Tighten the bracket mounting bolt to 12 N?m (106 lb in). Connect the vent valve pipe to the EVAP canister. • Install the two vent valve pipe clips into the existing underbody holes. • Connect the EVAP canister vent valve electrical connector, if equipped. • Attach bulk 5/8″ heater hose to the vent valve port and secure using a clamp. Run a length as needed along the frame rail routing to the area above the transmission. • Cut the hose to determined length and install the supplied filter box. Secure using a clamp. • Remove the transmission support and lower the transmission assembly as necessary to allow for access to the new filter box location using a tie strap. DO NOT pinch or restrict the transmission vent hose. The filter box opening should be pointing downward. • Raise the transmission and reinstall the transmission support. • Tie strap the hose as needed along the frame rail in order to keep the hose away from pinch*points and heat sources. • Lower the vehicle. • 2004-2007 Model Year (Use Service Kit P/N 19152349) Raise the vehicle. Suitably support the vehicle. • Disconnect the EVAP canister vent valve electrical connector. • Disconnect the canister pipe from the vent valve. • Push in the retainer and remove the existing canister vent valve from the fuel tank clip or mounting bracket. Discard the old valve. • Cut back the existing canister pipe approximately 51 mm (2 in) to remove the quick connect end. Crew Cab Short Box Shown Below, Other Configurations Similar Extended Cab Short Box Shown Below, Other Configurations Similar Install the new canister vent valve to the fuel tank clip or mounting bracket. • Cut bulk 5/8″ heater hose to a length of approximately 76 mm (3 in). Install the hose between the vent valve and the canister pipe and secure using clamps. • Attach bulk 5/8″ heater hose to the vent valve port and secure using a clamp. Run a length as needed along the frame rail routing to the area above the transmission. • Cut the hose to determined length and install the supplied filter box. Secure using a clamp. •

2001 Hyundai Accent 1.5L Difficulty filling the gas tank The pump keeps clicking off Repair Manual

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Tests/Procedures: 1. Disconnect the vapor line at the charcoal canister that comes from the liquid vapor separator and goes to the charcoal canister. See if the fuel tank can be easily filled then. 2. If the fuel tank can easily be filled with the vapor line removed from the charcoal canister, reconnect the vapor line and remove the other lines from the charcoal canister and see if the fuel tank can be easily filled. 3. If the fuel tank is once again difficult to fill, replace the charcoal canister. 4. If disconnecting the vapor line at the charcoal canister does NOT make the fuel tank easy to fill, then disconnect the vapor line from the liquid vapor separator at the fuel tank in case the vapor line is plugged/restricted. Potential Causes: Charcoal Canister Liquid Vapor Separator Vapor Line Tech Tips: Fuel vapors are directed to the canister from the ORVR fill vent valve in the gas tank through the liquid vapor separator and to the canister. The metal tube that loops up by the filler neck is part of the vapor line to the canister

2001 Hyundai Accent Difficulty filling the gas tank/ The pump keeps clicking off

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Disconnect the vapor line at the charcoal canister that comes from the liquid vapor separator and goes to the charcoal canister. See if the fuel tank can be easily filled then. 2. If the fuel tank can easily be filled with the vapor line removed from the charcoal canister, reconnect the vapor line and remove the other lines from the charcoal canister and see if the fuel tank can be easily filled. 3. If the fuel tank is once again difficult to fill, replace the charcoal canister. 4. If disconnecting the vapor line at the charcoal canister does NOT make the fuel tank easy to fill, then disconnect the vapor line from the liquid vapor separator at the fuel tank in case the vapor line is plugged/restricted. Potential Causes: Charcoal Canister Liquid Vapor Separator Vapor Line Tech Tips: Fuel vapors are directed to the canister from the ORVR fill vent valve in the gas tank through the liquid vapor separator and to the canister. The metal tube that loops up by the filler neck is part of the vapor line to the canister. Diagnostic Codes: None

1984-1995 Honda Accord/Prelude In­Tank Fuel Pumps TEST/REPAIR MANUAL

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Carbureted Fuel System GENERAL INFORMATION On these vehicles, the engine management system is considered part of the emission control system. The major components include the carburetor(s), feedback control system, the air injection system, a throttle control system and the EGR system. The system consists of sensors and switches that feed information to the Electronic Control Unit (ECU), which will then operate several solenoid valves to maintain the ideal air/fuel ratio under all conditions. As useful as the tests found in this section are, the first step in repair or service to engine management systems is still to gain as much information as possible about the problem; when and under what conditions it occurs. At highway speed? At idle only? Only under heavy load or hard acceleration? Wet weather? Defining the problem will eliminate many systems from consideration and possibly point to the affected system. Before diving into an extended electrical diagnosis, take the time to review the basics. Check every vacuum line for cracks or leaks. Check every electrical connector for corrosion or loose pins. Quite often, simply unplugging and reconnecting a connector will break up corrosion on the pins and restore the circuit. Watch out for poor grounds, particularly if the car has experienced major bodywork. COMPONENT TESTING Air Injection System The purpose of this system is to supply oxygen to the exhaust stream at a point in the exhaust manifold that is hot enough to burn off some of the hydrocarbon emissions. The main component is an air suction valve. The valve is spring loaded to stay closed, with engine vacuum supplied to a diaphragm that reduces the spring pressure and allows the reeds to open. The ECU regulates the engine vacuum to the diaphragm by operating a solenoid valve. 1. With the engine at normal operating temperature and at idle, remove the air cleaner and listen for a bubbling sound at the air suction port. There should be no sound at idle, meaning the air suction valve is closed. 2. If the noise is heard at the air suction port, disconnect the vacuum hose at the air suction valve and connect a vacuum gauge to the hose. There should be no vacuum. If there is vacuum and the noise stops, the problem is in the control system. If there is no vacuum and the bubbling sound is still there, the air suction valve is defective and must be replaced. 3. To test the valve, draw a vacuum at the air suction valve diaphragm and listen for a bubbling sound at the air suction port. If no sound is heard, the air suction valve or diaphragm is faulty. Throttle Control System