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mazda 3 charcoal canister

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1983 Mazda RX-7 GSL ENGINE COMPRESSION TESTING

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HIGH TENSION WIRE RESISTANCE Carefully remove high tension wires from spark plugs and distributor cap. Using an ohmmeter, measure resistance of wires while gently twisting wires. If resistance is not to specifications, or fluctuates from infinity to any value, replace high tension wire(s). HIGH TENSION WIRE RESISTANCE High Tension Wire Routing For high tension wire routing, see Fig. 2 and Fig. 3 . Fig. 3: Locating High Tension Wires On Distributor Cap Courtesy of MAZDA MOTORS CORP. ADJUSTMENTS DISTRIBUTOR All models are equipped with Mitsubishi electronic ignition with 2 pick-up coils. Air gap is non-adjustable IGNITION TIMING 1. Warm engine to normal operating temperature. Connect a tachometer, then connect timing light to leading (lower) spark plug of front rotor. Start engine and run at idle speed. 2. Check ignition timing and rotate distributor to correct if necessary. Tighten distributor lock nut and recheck timing. 3. Connect timing light to trailing (upper) plug of front rotor. Start engine and check timing. If not correct, loosen vacuum unit attaching screws. Move vacuum unit in or out to adjust trailing timing. Remove test equipment.

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.

1984-1998 Jeep Wagoneer/ Commando/ Cherokee Emission Controls Crankcase Ventilation System (PCV/CCV)

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CCV Fitting See Figures 2 and 3 1. With the engine running, remove the CCV fitting. a. If the fitting is not plugged, a hissing noise will be heard as air passes through the valve. A strong vacuum should also be felt when a finger is placed over the fitting. b. Install the CCV fitting. c. Remove the fresh air hose from the air cleaner assembly and loosely hold a piece of paper over the open end of the hose. After allowing about one minute for the crankcase pressure to reduce, the paper should be sucked against the opening with a noticeable amount of force. 2. Turn the engine OFF . Remove the metered orifice fitting, and check for a plugged condition. A clicking noise should be heard to indicate that the valve mechanism is free. 3. If the crankcase ventilation system meets the tests in Steps 1 and 2 above, no further service is required. If not, the CCV fitting must be cleaned and the system checked again. 4. If Step 1c fails when the CCV fitting is cleaned, it will be necessary to replace the molded vacuum hose with a new one, and to clean the metered orifice port. 5. Clean or replace the engine air cleaner filter element with a new one-for more details, refer to the air cleaner procedure located in General Information & Maintenance. Fig. 2: CCV system diagram for 4.0L engine Fig. 3: CCV system diagram for the 2.5L engine Evaporative Emission Control System OPERATION The evaporative emission control system prevents the release of unburned hydrocarbons, from gasoline or gasoline vapor, into the atmosphere. When pressure in the fuel tank is below 3 psi (20 kPa), the pressure relief/rollover valves open allowing fuel vapors to flow to the evaporative canister where they are absorbed by a charcoal mixture. This prevents excessive pressure buildup in the fuel system. Most canisters are equipped with a calibrated orifice at the inlet to the canister.

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

2005 Nissan-Datsun Sentra Emission Control Systems Canister Purge Volume Control Valve Testing and Inspection Manual

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Component Inspection EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE With CONSULT-II Check air passage continuity of EVAP canister purge volume control solenoid valve under the given conditions. Without CONSULT-II Check air passage continuity of EVAP canister purge volume control solenoid valve under the given conditions.