Question about 1995 Oldsmobile Aurora

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Fuel intake manifold

Is there a replaceable o-ring behind the safety blowout valve
I removed part of an o-ring from behind the valve and it seemed
to stay closed and run good for about a week, but now I
see more o-ring sticking out and it runs poorly(pops on acceleration)
again

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  • 397 Answers

That 'O' ring piece you have removed has now caused an airleak and your car is running on a lean mixture more noticeable under load. You need to get that 'O' ring replaced as soon as possible.
Sorry I can't help you with that specific part as I am not familiar with that car.

Posted on Sep 01, 2008

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1999 Alero : Fuel leaking at a fitting where fuel line goes under intake manifold. Does manifold have to be removed to remove or tighten this fitting?


IF FUEL LINE FITTING LEAKING UNDER INTAKE YOU HAVE TO REMOVE TOP INTAKE MANIFOLD TO REPLACE FUEL LINE FITTING O RING.

Sep 15, 2011 | 1999 Oldsmobile Alero

2 Answers

My '98 Catera needs the #1 cyl ignition coil replaced,plus the valve cover gaskets.Is all of this readily accessible when the air cleaner is removed?Or,more importantly,how many components must be...


Not easy but doable. I would mark anything you aren't familiar with to get it back together right. Please let me know if you have any questions, and thanks for using FixYa.


IGNITION COIL REMOVAL & INSTALLATION
3.0L Engine
  1. Remove the wiper arms
  2. Remove the left and right side air inlet grilles
  3. Remove the wiper motor.
  4. Detach the power brake booster vacuum connection from the intake plenum.
  5. Disconnect the spark plug wiring harness from the ignition coil.
  6. Detach the electrical connection from the ignition coil.
  7. Remove the bolts from the ignition coil, and remove the coil.

To install:
  1. Installation is the reversal of the removal procedure.
  2. Tighten the coil bolts to 71 inch lbs. 8 (Nm).
  3. Tighten the power brake booster vacuum connection until snug.

valve cover removal & installation3.0L Engine
RIGHT
  1. Disconnect the negative battery cable.
  2. Remove the intake plenum and the intake manifold.
  3. Remove the spark plug boots from the spark plugs, and then the wires from the routing retainers. Make sure they are tagged for proper installation.
  4. Remove the rocker arm cover-to-cylinder screws, the cover, and the gasket/seals. Discard the seals.


NOTE Ensure all eight sealing O-rings are accounted for. They may stick to the camshaft bearing caps or fall into the oil return journals in the cylinder head.
jturcotte_1756.gif

Fig. The location of the valve cover O-rings is shown here


jturcotte_1757.gif

Fig. The valve cover sealant application points
To install:

  1. Install new valve cover seals. Lightly coat the new seals, including O-rings, with engine oil prior to installation. The oil application will assist in holding the O-ring seals to the valve cover.
  2. Apply a thin coat of silicone sealer at the front and back of the seals.
  3. Install the valve cover to the cylinder head, and tighten the bolts to 71 inch lbs. (8 Nm).
  4. Route the spark plug wires into the retainers, and install the plug boots to the spark plugs.
  5. Replace the intake manifold and the intake plenum.
  6. Connect the negative battery cable.
LEFT
  1. Disconnect the negative battery cable.
  2. Remove the intake plenum and the intake manifold.
  3. Remove the spark plug boots from the spark plugs, and then the wires from the routing retainers. Make sure they are tagged for proper installation.
  4. Remove the oil filler spout.
    1. Unlock the tab.
    2. Twist counterclockwise.

  5. Remove the rocker arm cover-to-cylinder screws, the cover, and the gasket/seals. Discard the seals.

NOTE Ensure all eight sealing O-rings are accounted for. They may stick to the camshaft bearing caps or fall into the oil return journals in the cylinder head.
To install:
  1. Install new valve cover seals. Lightly coat the new seals, including O-rings, with engine oil prior to installation. The oil application will assist in holding the O-ring seals to the valve cover.
  2. Apply a thin coat of silicone sealer at the front and back of the seals.
  3. Install the valve cover to the cylinder head, and tighten the bolts to 71 inch lbs. (8 Nm).
  4. Install the oil filler spout.
    1. Insert the spout and twist clockwise.
    2. Ensure the locking tab seats on the valve cover bolt head.

  5. Route the spark plug wires into the retainers, and install the plug boots to the spark plugs.
  6. Replace the intake manifold and the intake plenum.
  7. Connect the negative battery cable.

INTAKE MANIFOLD REMOVAL & INSTALLATION

3.0L Engine
This vehicle uses a sequential multiport fuel injected engine. Fuel injector connectors must be positioned onto their appropriate fuel injector or engine performance and exhaust emissions may be seriously affected. Fuel injector connectors are numbered to match their cylinders.
  1. Remove the intake plenum.
  2. Properly relieve the fuel system pressure.
  3. Remove the fuel supply and fuel return hose from the fuel rail.
  4. Fuel injector electrical harness connector.
  5. Remove the intake manifold bolts and the intake manifold.


NOTE Mask off the ports to the intake manifold spacer. If foreign objects enter the engine, severe damage may result.
Clean the intake manifold sealing surfaces with a non-abrasive tool or solvent.
Do not damage machined aluminum surfaces or improper sealing may occur.


jturcotte_1758.gif

Fig. Location of the guide pins for the intake plenum-3.0L engine


jturcotte_1759.gif

Fig. Intake plenum-to-intake manifold mounting


jturcotte_1760.gif

Fig. The intake manifold bolt locations
To install:

  1. Remove the masking from the intake ports.
  2. Install the intake manifold, and tighten the intake bolts to 15 ft. lbs. (20 Nm), rotating the tightening sequence.
  3. Reconnect the fuel injector electrical harness connector.
  4. Couple the fuel supply and fuel return hose,. Tighten the connection to 11 ft. lbs. (15 Nm).


NOTE Counterhold the connections to prevent damage to the fuel rail.
  1. Install the intake plenum.
  2. Connect the negative battery cable.

May 24, 2011 | 1998 Cadillac Catera

1 Answer

Excessive fuel consumption on vw caravelle 2.5i


Clogged PCV Valve
The main purpose of the PCV (positive crankcase ventilation) valve is to recirculate blow-by gases back from the crankcase area through the engine to consume unburned hydrocarbons. Blow by is a mixture of air, gasoline and combustion gases forced past the rings on the combustion stroke. The PCV system usually has a tube leading from the crankcase to the carburetor or intake manifold. Vacuum within the engine intake manifold pulls blow by gases out of the crankcase into the combustion chamber along with the regular intake of air and fuel.
Worn Piston Ring Grooves
For piston rings to form a good seal, the sides of the ring grooves must be true and flat - not flared or shouldered - and the rings must have the correct side clearance in the grooves. Normally, automotive ring groove side clearance should not exceed .002-.004. As the pistons move up and down, the rings must seat on the sides of the grooves in very much the same way that valves must seat to prevent leakage. New rings in tapered or irregular grooves will not seal properly and, consequently, oil will pass around behind the rings into the combustion chamber. Worn grooves are usually flared or tapered causing increased side clearances which permit more than the normal amount of oil to pass the rings into the combustion chamber. Excessive side clearances also create a pounding effect by the rings on the sides of the piston grooves. This promotes piston groove wear and, if the condition is not corrected, breakage of rings lands may occur.
Cracked or Broken Ring Lands
Cracked or broken ring lands prevent the rings from seating completely on their sides and cause oil pumping by a process similar to that described in #7. In addition to this, they also lead to serious damage to the cylinders as well as complete destruction of the pistons and rings. Cracked or broken ring lands cannot be corrected by any means other than piston replacement and this should be done as soon as there is the slightest indication of a crack.
Worn Valve Stems and Guides
When wear has taken place on valve stems and valve guides, the vacuum in the intake manifold will draw oil and oil vapor between the intake valve stems and guides, into the intake manifold and then into the cylinder where it will be burned. If this condition is not corrected when new piston rings are installed, an engine is likely to use more oil than it did before because the new piston rings will increase the vacuum in the intake manifold. When gum or deposits on the valve stems are removed - a procedure recommended when overhauling an engine - the seal previously formed will be removed and leakage will be more pronounced. This is particularly true on overhead valve engines where loss of oil may occur on the exhaust valves as well as on the intake valves. High oil consumption caused by too much valve guide clearance can frequently be cured by reaming or nerraling the valve stem. In some cases new valves may also be required. Use of a permanently bonded valve stem seal will give added insurance against oil leakage on complete engine overhauls or on valve jobs. Large Oil Leaks Leaking valve cover gaskets, leaking crankshaft front and rear seals.

Apr 24, 2011 | Volkswagen Microbus Cars & Trucks

1 Answer

Starter needs to be replaced. Need instruction procedure for a do it yourselfer.


Hi, I have pasted the procedure from autozone.com below. Because this requires removal of the intake manifold, please be as sure as possible that your starter needs replacement. If you have any doubt, please let me know what your symptoms are and what troubleshooting you have done that led you to believe your starter is bad. Also, if you have any questions about the procedure below, please let me know. Thanks for using FixYa.


Removal & Installation


Disconnect the Negative battery cable


Relieve the fuel system pressure (you can do this by placing a rag over the schrader valve on the fuel rail and pressing in the valve stem--just be careful not to spray fuel on your eyes).


Drain the cooling system.


Remove or disconnect the following:


  • Intake manifold heat shield
  • Sight shield
  • Coil module connectors from the coil modules located on the valve covers
  • Positive Crankcase Ventilation (PCV) hose and valve from the valve cover
  • Fuel regulator vacuum tube
  • Vacuum tubes from the AIR solenoid
  • Fuel inlet and return lines
  • Fuel rail bracket retaining nut at the rear lift bracket
  • 2 pushnuts attaching the engine coolant heater wire and set it aside, if equipped
  • Fuel injector electrical connections
  • Fuel rail and injectors
  • Plenum duct clamp at the rear of the intake manifold, loosen
  • Intake manifold bolts and the manifold
Clean the manifold mating surfaces.


Remove or disconnect the following:
Starter electrical connectors Starter motor

jturcotte_1382.gif


Fig. View of starter motor removal and wires



To install:

Install or connect the following:

  • -S- terminal wire. Torque the nut to 35 inch lbs. (4 Nm).
  • Starter electrical connectors. Torque the nut to 89 inch lbs. (10 Nm).
  • Starter motor
  • Mounting bolts. Torque the bolts to 22 ft. lbs. (30 Nm).


jturcotte_1383.gif


Fig. Intake manifold torque sequence- 4.6L engines

  1. Grease the inside edge of the rubber plenum duct.
  2. Position the intake manifold by performing the following sub-steps:
    1. Place the rear of the intake manifold into the plenum duct.
    2. Place the front of the intake manifold downward on to the cylinder heads.

  3. Install the intake manifold bolts and torque to 89 inch lbs. (10 Nm) in the sequence illustrated. DO NOT torque the intake manifold bolts when the engine is HOT or at operating temperature.
  4. Make sure the plenum duct is fully attached to the rear of the intake manifold and tighten the plenum duct clamp to 20 inch lbs. (2.25 Nm).
  5. Install or connect the following:

    Fuel rail and injectors and tighten the rail retainers to 89 inch lbs. (10 Nm) Fuel injector electrical connections Alternator coolant pipe/surge tank pipe and position onto the fuel rail studs Engine coolant heater wire onto the studs and install the pushnuts, if equipped Fuel rail bracket retaining nut at the rear lift bracket and tighten to 89 inch lbs. (10 Nm) Fuel inlet and return lines Vacuum tubes to the AIR solenoid Fuel regulator vacuum tube Positive Crankcase Ventilation (PCV) valve and hose to the valve cover Coil module connectors to the coil modules located on the valve covers Sight shield Intake manifold heat shield Negative battery cable
  6. Fill and bleed the cooling system.

Mar 31, 2011 | 2002 Cadillac Deville

1 Answer

How to remove intake manifold on 2005 Buick Lesabre


You didn't post the size of your engine so please pick the appropriate one:

3.8L
  1. Relieve the fuel system pressure.
  2. Drain the cooling system.
    1. Remove or disconnect the following:
    2. Negative battery cable
    • Supercharger
    • Thermostat housing
    • Exhaust Gas Recirculation (EGR) tube at the intake manifold
    • Engine Control Temperature (ECT) sensor
    • Intake manifold
  • To install:

    1. Install or connect the following:
      • Intake manifold with new gaskets. Torque the bolts, working from the center out, to 11 ft. lbs. (15 Nm).
      • ECT sensor connector
      • EGR tube to the intake manifold
      • Thermostat housing
      • Supercharger
      • Negative battery cable
    2. Refill and bleed the cooling system.
    3. Run the engine and check for leaks and proper engine operation.
    4.6L
    4.6L Engine
    1. Remove the brake booster hose from the throttle body.
    2. Remove the fuel pressure regulator vacuum tube from the fuel pressure regulator and the water crossover.
    3. Remove the PCV fresh air feed tube from the camshaft cover and the throttle body.
    4. Remove the PCV dirty air tube from the PCV orifice in the right camshaft cover and from the intake manifold.
    5. Disconnect the fuel injector electrical connectors from the fuel injectors.
    6. Remove the fuel injector wiring harness.
    7. Remove the fuel rail bracket nut from the engine lift bracket.
    8. Remove the fuel rail studs.
    9. Lift and remove the fuel rail with injectors.
    10. Loosen the plenum duct clamp in order to remove the intake manifold.
    11. Remove the intake manifold bolts.
    12. Remove the intake manifold.

    To install:

    1. Install the intake manifold, fitting the plenum duct over the intake manifold duct.
    2. Loosely install the intake manifold bolts.

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    Intake manifold torque sequence-4.6L engine


    1. Tighten the intake manifold bolts in sequence. Tighten the intake manifold bolts to 89 inch lbs. (10 Nm).
    2. Tighten the plenum duct clamp to the intake manifold. Tighten the plenum duct clamp to 24 inch lbs. (2.75 Nm).
    3. Inspect the fuel injector O-rings. Ensure the fuel injector O-rings are not missing, misaligned or damaged. Replace the O-rings if necessary.
    4. Lubricate the intake manifold fuel injector bores with light mineral oil (GM P/N 9981704), clean engine oil, or equivalent.
    5. Install the fuel rail with fuel injectors as an assembly.
    6. Install the fuel rail studs. Tighten the fuel rail studs to 80 inch lbs. (9 Nm).
    7. Install the fuel rail bracket nut to the engine lift bracket. Tighten the fuel rail bracket nut to 89 inch lbs. (10 Nm).
    8. Install the fuel injector wiring harness.
    9. Connect the fuel injector electrical connectors to the fuel injectors.
    10. Install the PCV dirty air tube to the PCV orifice in the right camshaft cover and to the intake manifold.
    11. Install the PCV fresh air feed tube to the camshaft cover and the water crossover.
    12. Install the fuel pressure regulator vacuum tube to the fuel pressure regulator and the throttle body.
    13. Install the brake booster hose to the throttle body.

    Nov 13, 2010 | Buick LeSabre Cars & Trucks

    1 Answer

    2006 dodge charger pcv valve location


    5.7L


    9491.jpg The PCV valve (3) is mounted into the top/right side of the intake manifold (2).

    9493.jpg
    1.The PCV valve (1) is sealed to the intake manifold with two O-rings (2).
    2.Remove PCV valve by rotating counter-clockwise 90 degrees until locating tabs (3) have been freed. After tabs have cleared, pull valve straight up from intake manifold.3.After valve is removed, check condition of two valve O-rings (2). __________________

    Oct 07, 2010 | 2006 Dodge Charger

    1 Answer

    Where would the pvc value be on a 300 chrysler 2006? also where would the spark plugs be located?


    Positive Crankcase Ventilation (PVC) Valve Removal & Installation 5.7L Engine To Remove:
      1.The PCV valve is mounted into the top/right side of the intake manifold.

      2.The PCV valve is sealed to the intake manifold with two O-rings.

      3.Free the PCV valve by rotating counter-clockwise 90 degrees until the locating tabs align with the openings on the manifold.

      4.Remove the PCV valve by pulling straight up from intake manifold and clearing the tabs.

      5.Check the condition of two valve O-rings.
    To Install:
    1. Clean the PCV valve opening on the intake manifold.
    2. Inspect the PCV valve O-rings. Replace if suspect.
    3. Apply engine oil to the two O-rings.
    4. Place the PCV valve into intake manifold.
    5. Rotate the valve 90 degrees clockwise for installation.
    6.1L Engine To Remove:
    1. The PCV valve is threaded into the right-front corner of the intake manifold.
    2. Remove the rubber hose from the PCV valve.
    3. Unscrew the PCV valve from the intake manifold.
    To Install:
    1. Clean the PCV valve opening on the intake manifold.
    2. Check the condition of the PCV valve O-ring. Replace if suspect.
    3. Check the condition of the PCV valve threads and clean if necessary.
    4. Apply engine oil to the O-ring.
    5. Install the PCV valve into intake manifold.
    6. Install the rubber hose to the PCV valve.
    prev.gif next.gif
    The spark plugs should lead to the coil pack via a spark plug wire but may be hidden by a plastic cover.

    The following details the ignition coil changing on the Chrysler 300:

    2.7L Engine To Remove:
    1. Disconnect the negative battery cable.
    2. Remove the intake manifold.
    3. Use compressed air to clear the area around the ignition coil and spark plug.
    4. Disconnect the electrical connector from the ignition coil.
    5. Remove the two fasteners securing the ignition coil.
    6. Remove the ignition coil.
    To Install:
    1. Install the ignition coil.
    2. Tighten the fasteners to 55 in-lb (6.2 Nm).
    3. Connect the electrical connector to the ignition coil.
    4. Install the intake manifold.
    5. Connect the negative battery cable.
    3.5L Engine To Remove:
    1. Disconnect the negative battery cable.
    2. Remove the intake manifold.
    3. Use compressed air to clear the area around the ignition coil and spark plug.
    4. Disconnect the electrical connector from the ignition coil. NOTE: Loosen the ignition coil fasteners by alternating back and forth. Do not lose the spacers under the coil when loosening the fasteners.
    5. Remove the two fasteners securing the ignition coil.
    6. Remove the ignition coil.
    To Install:
    NOTE: Tighten the ignition coil fasteners by alternating back and forth. Do not lose the spacers under the coil when installing the coil.
    1. Install the ignition coil.
    2. Tighten the fasteners to 60 in-lb (6.7 Nm).
    3. Connect the electrical connector to the ignition coil.
    4. Install the intake manifold.
    5. Connect the negative battery cable.
    5.7L Engine (2005) To Remove:
    NOTE: Carefully note the position of each spark plug cable before disconnecting them so they can be installed in their original positions to prevent misfire.
    NOTE: The throttle body intake air duct or intake air box may need to be removed to gain access to certain ignition coils.
    1. Disconnect the electrical connector from the ignition coil.
    2. Remove the secondary ignition cable from the coil.
    3. Use compressed air to clear the area around the ignition coil.
    4. Remove the two fasteners securing the ignition coil. Bolts are retained to coil.
    5. Remove the ignition coil. Pull with a slight twisting motion to help release the boot seal with the spark plugs.
    To Install:
    NOTE: Apply a light film of dielectric grease to the inside of the coil boots before installation.
    1. Clean area around spark plug and coil mounting area with compressed air.
    2. Install the ignition coil.
    3. Tighten the fasteners to 105 in-lb (12 Nm).
    4. Connect the electrical connector to the ignition coil.
    5. Connect the secondary ignition cable to the coil.
    6. Install the air duct or air box if removed.
    Ignition coil mounting bolts (5.7L & 6.1L engines) chry-02-57-263.gif

    5.7L (2006) & 6.1L Engine To Remove:
    NOTE: Each ignition coil, mounted on the valve cover, fires two spark plugs at each cylinder.
    1. Disconnect the negative battery cable.
    2. Use compressed air to clear the area around the ignition coil and spark plug.
    3. Disconnect the electrical connector from the ignition coil.
    4. Remove the two fasteners securing the ignition coil.
    5. Remove the ignition coil. Pull with a slight twisting motion to help release the boot seal with the spark plugs.
    To Install:
    NOTE: Apply a light film of dielectric grease to the inside of the coil boots before installation.
    1. Install the ignition coil.
    2. Tighten the fasteners to 105 in-lb (12 Nm).
    3. Connect the electrical connector to the ignition coil.
    4. Connect the negative battery cable.
    prev.gif next.gif

    Sep 24, 2010 | 2005 Chrysler 300

    1 Answer

    Hot do you take off a 98 GMC 5.7 vortec intake


    Note, removing the upper intake manifold is not necessary when removing lower intake manifold, they are removed as an assembly.
    Disconnect negative battery cable. Drain cooling system. Remove air cleaner assembly and inlet duct. Mark and remove distributor. Remove upper radiator hose at thermostat housing. Disconnect accelerator and cruise control cables. Remove heater hoses from intake manifold. Remove EGR pipe.
    Disconnect fuel lines at rear of engine. Remove AC compressor and set aside(leave hoses connected). Remove canister purge solenoid. Disconnect theSCPI injector, ignition coil, Ignition Control Module, generator,IAC motor, TP sensor, O2 sensor, Exhaust Gas Recirculation valve and Engine Coolant Temperature sensor wiring harness connectors. Remove PCV valve and hose. Remove lower intake manifold bolts. Remove lower intake manifold.
    Installation.
    Always use New O-rings when reconnecting fuel lines at rear of engine. Apply a bead of RTV silicone sealer along the front and rear sealing surfaces of the block.See Fig.6. Install new gaskets and intake manifold on block while RTV is still wet to the touch. Use Threadlock 12345382 or equivalent to lower intake manifold bolts. Tighten lower intake manifold bolts in sequence to specification table. See fig. 7. To complete installation, reverse removal procedure.f52665d.gifabc2b5f.gif

    Oct 10, 2009 | 1998 GMC Sierra

    1 Answer

    99 Lumina Won't start after intke gskt chng--fuel system clicking


    Sound like you forgot to put new O-rings on fuel injectors.you have a intake leak through the injectors ports. that why car wont crank .remove fuel rail.replace upper and lower O-rings on fuel injectors.

    Jul 19, 2009 | 1999 Chevrolet Lumina

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