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1984-1995 Honda Civic/ CRX Positive Crankcase Ventilation (PCV) System Repair Manual

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Filed Under (Honda Manuals) by admin on 22-04-2012

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The PCV system is designed to prevent blow-by gas from escaping to the atmosphere by drawing it directly into the intake manifold. The PCV valve contains a spring-loaded plunger which is lifted in proportion to intake manifold vacuum. Under high vacuum, blow-by is returned directly to the manifold through the breather chamber and PCV valve with fresh air. When intake manifold vacuum decreases (wide open throttle) and vacuum in the air cleaner increases, the PCV valve closes and the blow-by is returned through the cylinder head cover breather hose and into the air cleaner. The PCV valve also acts as a check valve when the engine backfires to prevent crankcase explosion. Fig. 1: PCV system components-1984-87 1.5L engines Fig. 2: PCV system components-1988-91 1.6L engines Fig. 3: PCV system components-1992-95 engines Fig. 4: PCV system components-1984-87 carbureted engines SERVICE Positive Crankcase Ventilation (PCV) Valve For PCV valve removal, refer to Routine Maintenance of this information. 1. Locate the PCV valve. With the engine running at idle, use pliers to pinch the PCV hose between the valve and the intake manifold. It should be possible to hear the spring loaded valve click shut. 2. If no click is heard, remove the valve from the engine but leave it connected to the intake manifold. A hissing sound should be heard and vacuum should be felt at the valve inlet. 3. If no vacuum is felt, remove the valve from the intake manifold hose. The engine should stall or almost stall. This will indicate a stuck valve or clogged hose. Check the breather hose for clogging or leaks and replace any defective parts. Exhaust Gas Recirculation (EGR) System FUEL INJECTED ENGINES General Information See Figure 3 The Exhaust Gas Recirculation (EGR) system is used to control emissions measured at the tailpipe. Components included are the EGR valve and controls. The EGR system uses a poppet type valve to regulate the amount of exhaust gas flowing into the intake manifold. The flow path is cast into the cylinder head and does not use any external tubing. A control solenoid valve regulates the amount of vacuum to the EGR valve. A Constant Volume Control (CVC) valve provides a constant amount of vacuum to the control solenoid valve over a wide range of engine vacuum. When servicing or repairing any part of the emissions system, it is absolutely essential to check for any obvious mechanical faults or failures. Remember, a trouble code only indicates which sensor or circuit is affected by the problem. Simple mechanical faults such as a vacuum leak or poor electrical connection can cause a fault code. The EGR valve is not simply open or closed but is modulated by controlling the amount of engine vacuum to the valve diaphragm, up to a maximum of 8 in. Hg of vacuum. The EGR valve has a sensor in the top of the valve that reports valve lift to the ECU (same as ECM, 1992-95). The ECU modulates the position of the control solenoid valve to control the EGR valve lift according to an internal program. Upstream of the control solenoid valve, the CVC provides a constant supply of vacuum so EGR control is precise under all manifold vacuum conditions

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1998-2000 HONDA Accord L4 Replace the fuel pressure regulator, and reroute the fuel pressure regulator vacuum line

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Filed Under (Honda Manuals) by admin on 16-07-2012

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1. Locate and identify the three vacuum ports on the intake manifold. 2. Disconnect and discard the vacuum hose that connects the fuel pressure regulator to vacuum port C. 3. Plug vacuum port C with the cap from the tube kit. 4. Replace the fuel pressure regulator. Refer to page 11-113 of the 1998-00 Accord Service Manual. 5. Install the new vacuum hose kit using one of the following procedures 1. Remove and discard the cap from vacuum port A. 2. Connect the short vacuum hose to vacuum port A M/T WITH CRUISE CONTROL 2. Disconnect and discard the vacuum hose that connects the fuel pressure regulator to vacuum port C. 3. Plug vacuum port C with the cap from the tube kit. 4. Replace the fuel pressure regulator. Refer to page 11-113 of the 1998-00 Accord Service Manual. 5. Install the new vacuum hose kit using one of the following procedures. Zoom Sized for Print 1. Remove and discard the cap from vacuum port A. 2. Connect the short vacuum hose to vacuum port A. Zoom Sized for Print 3. Anchor the long vacuum hose by attaching it to the rear intake air duct clip and to the cruise control hose. . Route the new vacuum hose to the fuel pressure regulator. Attach the hose to the three rear clips on the engine wire harness cover. Zoom Sized for Print 1. Remove and discard the vacuum hose from vacuum port A. This hose supplies vacuum to the rear engine mount control solenoid. 2. Connect the short vacuum hose from the top of the Y fitting to vacuum port A

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2006 Ford Five Hundred SE UPPER INTAKE MANIFOLD REMOVAL AND INSTALLATION MANUAL

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Filed Under (Ford Manuals) by admin on 30-11-2011

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Removal All vehicles 1. Drain the cooling system. For additional information, refer to DRAINING . 2. Disconnect the battery ground cable. For additional information, refer to REMOVAL AND INSTALLATION . 3. Remove the air cleaner outlet pipe. For additional information, refer to REMOVAL AND INSTALLATION . 4. Remove the 4 transaxle roll restrictor cross brace bolts 5. Remove the bolt and the transaxle roll restrictor cross brace. 6. Disconnect the evaporative emissions (EVAP) canister purge valve tube from the upper intake manifold and detach the retainer. 7. Disconnect the positive crankcase ventilation (PCV), brake booster and vacuum harness tubes from the upper intake manifold. 8. Detach the fuel tube retainer from the upper intake manifold. 9. Disconnect the exhaust gas recirculation (EGR) system module electrical connector and vacuum tube. 10. Detach the vacuum tube from the upper intake manifold vacuum tube retainer. 11. Disconnect the EGR system module tube from the EGR system module. Early build 12. Disconnect and plug the throttle body and PCV coolant hoses. Late build 13. Disconnect and plug the 2 PCV coolant hoses. All vehicles 14. Disconnect the throttle body electrical connector. 15. If equipped, remove and discard the 4 upper-to-lower intake manifold screws. 16. Remove the 8 bolts and the upper intake manifold. * Remove and discard the gaskets. Installation All vehicles Fig. 4: Identifying Tightening Sequence Of Bolts Courtesy of FORD MOTOR CO. NOTE: Clean and inspect all sealing surfaces. Install new gaskets 1. Position the upper intake manifold and install the 8 bolts. * Tighten in the sequence shown to 10 N.m (89 lb-in). 2. Connect the throttle body electrical connector. Late build 3. Connect the 2 PCV coolant hoses. Early build 4. Connect the throttle body and PCV coolant hoses. All vehicle 5. Connect the EGR system module tube to the EGR system module. * Tighten to 40 N.m (30 lb-ft). 6. Attach the vacuum tube to the upper intake manifold vacuum tube retainer. 7. Connect the EGR system module electrical connector and vacuum tube. 8. Attach the fuel tube retainer to the upper intake manifold. 9. Connect the PCV, brake booster and vacuum harness tubes to the upper intake manifold. 10. Connect the EVAP canister purge valve tube to the upper intake manifold and attach the retainer. 11. Clean the 4 transaxle roll restrictor cross brace bolts using a wire brush and apply new threadlock to the threads. 12. Position the transaxle roll restrictor cross brace and install the 4 new bolts. * Tighten to 55 N.m (41 lb-ft). 13. Clean the transaxle roll restrictor cross brace-to-roll restrictor bolt using a wire brush and apply new threadlock to the threads. 14. Install a new transaxle roll restrictor cross brace-to-roll restrictor bolt. * Tighten to 48 N.m (35 lb-ft). 15. Install the air cleaner outlet pipe. For additional information, refer to REMOVAL AND INSTALLATION . 16. Connect the battery ground cable. For additional information, refer to REMOVAL AND INSTALLATION . 17. Fill and bleed the cooling system.

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Honda Civic/ CRX Positive Crankcase Ventilation (PCV) System OPERATION MANUAL

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Filed Under (Honda Manuals) by admin on 28-01-2012

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The PCV system is designed to prevent blow-by gas from escaping to the atmosphere by drawing it directly into the intake manifold. The PCV valve contains a spring-loaded plunger which is lifted in proportion to intake manifold vacuum. Under high vacuum, blow-by is returned directly to the manifold through the breather chamber and PCV valve with fresh air. When intake manifold vacuum decreases (wide open throttle) and vacuum in the air cleaner increases, the PCV valve closes and the blow-by is returned through the cylinder head cover breather hose and into the air cleaner. The PCV valve also acts as a check valve when the engine backfires to prevent crankcase explosion. Fig. 1: PCV system components-1984-87 1.5L engines Fig. 2: PCV system components-1988-91 1.6L engines Fig. 3: PCV system components-1992-95 engines Fig. 4: PCV system components-1984-87 carbureted engines
SERVICE Positive Crankcase Ventilation (PCV) Valve For PCV valve removal, refer to Routine Maintenance of this information. 1. Locate the PCV valve. With the engine running at idle, use pliers to pinch the PCV hose between the valve and the intake manifold. It should be possible to hear the spring loaded valve click shut. 2. If no click is heard, remove the valve from the engine but leave it connected to the intake manifold. A hissing sound should be heard and vacuum should be felt at the valve inlet. 3. If no vacuum is felt, remove the valve from the intake manifold hose. The engine should stall or almost stall. This will indicate a stuck valve or clogged hose. Check the breather hose for clogging or leaks and replace any defective parts. Exhaust Gas Recirculation (EGR) System FUEL INJECTED ENGINES General Information See Figure 3 The Exhaust Gas Recirculation (EGR) system is used to control emissions measured at the tailpipe. Components included are the EGR valve and controls. The EGR system uses a poppet type valve to regulate the amount of exhaust gas flowing into the intake manifold. The flow path is cast into the cylinder head and does not use any external tubing. A control solenoid valve regulates the amount of vacuum to the EGR valve. A Constant Volume Control (CVC) valve provides a constant amount of vacuum to the control solenoid valve over a wide range of engine vacuum.

Test Guidelines for Use of Essential Tool J 41413-200 Evaporative System Tester

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Filed Under (More Manuals) by admin on 17-01-2012

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Non-Enhanced EVAP System Diagnostic Procedure 1. Pinch off or plug the EVAP vapor line to seal the EVAP system. 2. Connect the EEST red battery clip to the positive (+) battery terminal. Connect the black battery clip to chassis ground. 3. Install the appropriate fuel fill cap adapter to the fuel fill pipe. Refer to the Service Information for the appropriate fuel fill cap adapter part number. 4. Connect the EEST’s nitrogen/smoke supply hose and vehicle fuel fill cap to the adapter. 5. Turn the nitrogen/smoke valve on the EEST control panel to SMOKE. 6. Use the remote switch to introduce smoke into the EVAP system for 60 seconds. Important: Additional smoke may need to be introduced at 15-second intervals until the leak source has been located. 7. Inspect the entire EVAP system for exiting smoke using the high intensity white light (J 41413-SPT). Enhanced EVAP System Leak Detection Procedure When diagnosing DTCs P0440, P0442, P0446 and P0455, use the J 41413-200 EEST along with 1. Turn ON the ignition with the engine OFF. 2. Command the EVAP vent valve closed with a scan tool.* *Prizm: In order to seal the EVAP system on the 1998-2002 Prizm, bypass the EVAP canister by connecting the fuel tank vapor hose to the canister purge line. Refer to the Service Information for additional information. 3. Connect the EEST red battery clip to the positive (+) battery terminal. Connect the black battery clip to chassis ground. 4. Install the appropriate fuel fill cap adapter to the fuel fill pipe. Refer to the Service Information for the appropriate fuel fill cap adapter part number. 5. Connect the EEST’s nitrogen/smoke supply hose and vehicle fuel fill cap to the adapter. 6. Turn the nitrogen/smoke valve on the EEST control panel to SMOKE. 7. Use the remote switch to introduce smoke into the EVAP system. 8. Use the J 41413-VLV EVAP Port Vent Fitting tool to open the EVAP service port (if equipped) until smoke is observed. 9. Remove the J 41413-VLV EVAP Port Vent Fitting tool once smoke is observed. Important: Additional smoke may need to be introduced at 15-second intervals until the leak source has been located.

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

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Filed Under (Honda Manuals) by admin on 03-07-2012

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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

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2002 Mercury Sable Upper Intake Manifold Removal And Installation Manual

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Filed Under (Mercury Manuals) by admin on 11-02-2012

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Upper Intake Manifold Removal 1. Remove the air cleaner outlet tube. 2. Remove the pin-type retainers and the accelerator cable splash shield 3. Disconnect the throttle cable and the cruise control cable. 4. Disconnect the Throttle Position Sensor (TPS) and Idle Air Control (IAC) valve electrical connectors. 5. Disconnect the harness Tom the throttle body stud. 6. Disconnect the Exhaust Gas Recirculation (EGR) vacuum regulator and vacuum supply hoses. 7. Disconnect the Positive Crankcase Ventilation (PCV) and Evaporative Emissions (EVAP) vacuum hoses. 8. Remove the EGR valve. 9. Remove the EGR Vacuum Regulator (EVR) valve. Zoom Sized for Print 1 Disconnect the vacuum hose. 2 Remove the nuts. 3 Remove the bolts. 4 Remove the EGR valve. Zoom Sized for Print 1 Disconnect the vacuum hose. 2 Disconnect the electrical connector. 3 Remove the bolts. 4 Remove the valve 10. Remove the eight bolts and the upper intake manifold. * Remove and discard the gaskets. * Clean all mating surfaces. Installation 1. Position new gaskets in the upper intake manifold. 2. Position the upper intake manifold and install the bolts in the sequence shown. 3. Install the EGR vacuum regulator valve. 4. Install the EGR valve. Zoom Sized for Print 1 Position the valve. 2 Install the bolts. 3 Connect the electrical connector. 4 Connect the vacuum hose. Zoom Sized for Print 1 Position the EGR. 2 Install the bolts. 3 Install the nuts 4 Connect the vacuum hose

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EDELBROCK PERFORMER SERIES CARBURETORS INSTALLATION INSTRUCTIONS

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Filed Under (More Manuals) by admin on 27-12-2011

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Figure 1 – Fittings and Vacuum Port Locations INSTALLATION PROCEDURE BEFORE REMOVING OLD CARBURETOR 1. Determine if the distributor vacuum port is timed (no vacuum at idle) or full (vacuum present at idle). With the engine at operating temperature and idling, pull the vacuum advance hose off of the carburetor and “feel”for vacuum by putting your finger on the vacuum port (See Fig. 2) . If your distributor has timed vacuum advance, you will hook the vacuum hose from the distributor to the passenger side vacuum port on the new carburetor. If it has full vacuum advance, it will be hooked up to the driver side port. 2. The stock steel fuel line must be converted to fuel resistant rubber hose. The stock steel line will not connect to the Performer Series Carburetor. Use Edelbrock Universal Fuel Line Kit #8135. This kit contains a filter, neoprene hose, and fittings to adapt to 5/16″or 3/8″stock steel fuel lines (See Fig. 3) . NOTE: After cutting the steel line, remove sharp edges and clean out any chips. 3. Always use a new fuel filter. Failure to do so will void your warranty. 4. You must use Edelbrock Adapter #2696 or Adapter & Fuel Line Kit #2697 when installing a Performer Series carburetor on a General Motors Quadrajet or Chrysler Thermoquad intake manifold. #2697 includes adapter #2696 and fuel line kit #8135. Do not use an open adapter! (See Fig. 4) 5. You must use Edelbrock Adapter #2732 when installing a Performer Series carburetor on certain Edelbrock intake manifolds. In those applications, install the adapter as shown (See Fig. 5)

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1998 Ford Ranger Heavy Duty Floor Crane Workshop Manual

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Filed Under (Ford Manuals) by admin on 02-02-2012

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1. Relieve the fuel pressure. For additional information, refer to Section 310-00 . 2. Disconnect the battery ground cable (14301). For additional information, refer to Section 414-01 . 3. Drain the engine cooling system. For additional information, refer to Section 303-03 . 4. Remove the hood (16612). 5. Remove the air cleaner outlet tube (9B659). For additional information, refer to Section 303-12 . 6. Remove the accelerator control splash shield (9E766). 7. Remove the upper radiator hose (8260). 8. Remove the lower radiator hose (8286). 9. Remove the two bolts and position the fan shroud (8146) on the fan blade (8600). 10. Remove the water pump pulley, fan and shroud; refer to Section 303-03 . 11. Disconnect the radiator overflow tube. 2. On vehicles equipped with automatic transmissions, disconnect the transmission cooler lines. 13. Disconnect the mass air flow sensor. 14. Disconnect the heater water hoses (18472) at the inlet and outlet; refer to Section 303-03 . 15. Disconnect the power connection from the generator (10346). 16. Disconnect the vacuum connection to the vacuum reservoir. 17. Disconnect the throttle body heater hose. 18. Disconnect the A/C cycling switch. 19. Disconnect the connector from the powertrain control module (PCM) (12A650). 20. Remove the nut. 21. Remove the ground wire stud from the powertrain control module. 22. Recover the A/C system; refer to Section 412-00 . 23. Disconnect the power steering cut-out switch. 24. Disconnect the peanut fitting from the A/C condenser core (19712). 25. Disconnect the A/C high pressure cut-out switch. 26. Disconnect the A/C manifold hose. 27. Remove the nut. 28. Disconnect the accelerator cable (9A758) and the speed control cable. 29. Disconnect the brake booster vacuum hose and vacuum tube at the upper intake manifold assembly. 30. Disconnect the EVR vacuum supply hose and the vacuum reservoir vacuum line. 31. Disconnect the wiring connector. 32. Disconnect the fuel line; refer to Section 310-01 . 33. Remove the A/C compressor; refer to Section 412-03 . 34. Disconnect the power steering pressure and return hoses. 35. Remove the nut retaining the wiring harness. 36. Disconnect the block heater if equipped. 37. Raise the vehicle on a hoist; refer to Section 100-02 . 38. Disconnect the engine ground cable

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

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Filed Under (Jeep Manuals) by admin on 01-06-2012

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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.

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