99 bmw 325i intake manifold removal. All top bolts, fuel rail, intake manny bolts, hoses removed and disconnected. Something still holding manifold but not visible any ideas.

To remove a fuel injector or injectors you must remove the fuel supply rail that sits over them. Here is how you do that for both engine options, Turbo and non Turbo..

Removal & Installation

Except Turbocharged Models

WARNING Release fuel system pressure before servicing fuel system components. Service vehicles in well ventilated areas and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or *****.

1. Release fuel system pressure.
2. Remove the air cleaner lid, disconnect the inlet air temperature sensor and makeup air hose.
3. Remove the negative battery cable.
4. Remove the engine cover or throttle control shield if equipped.
   NOTE Wrap shop towels around hose to catch any gasoline spillage.
5. Disconnect fuel supply tube from rail.
6. Remove the Intake Manifold, refer to the Engine section.
7. Disconnect electrical connectors from fuel injectors.
8. Remove bolts holding fuel rail.
9. Remove the fuel rail and injectors.
10. Remove the injectors from the fuel rail.

To install:

1. Install injectors to the fuel rail.
2. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each injector.
3. Insert fuel injector nozzles into openings in intake manifold. Seat the injectors in place. Tighten fuel rail bolts to 170-230 inch lbs. (19.5-25.5 Nm).
4. Attach electrical connectors to fuel injectors.
5. Connect fuel supply tube to fuel rail. Refer to Quick Connect Fittings in the Fuel Delivery section
6. Install Intake Manifold, refer to the Engine section.
7. Install the engine cover or throttle control shield if equipped.
8. Install the negative battery cable.
9. Install the air cleaner lid, connect the inlet air temperature sensor and makeup air hose. Tighten air inlet tube clamps to 20-30 inch lbs. (2-4 Nm).

Turbocharged Models

WARNING Release fuel system pressure before servicing fuel system components. Service vehicles in well ventilated areas and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or *****.

1. Release the fuel system pressure.
2. Disconnect the negative battery cable.
3. Disconnect the throttle body inlet hose and remove from throttle body.
4. Disconnect the purge hose from the throttle body.
5. Unlock and disconnect the electrical connection at the throttle body.
6. Remove the throttle control shield .
7. Remove the throttle and speed control cables from the throttle body.
8. Remove the cables from the throttle body bracket.
9. Unlock and disconnect the MAP sensor electrical connector.
10. Remove the vacuum lines from the rear of the intake manifold.
11. Remove the 5 bolts from the front of the intake manifold.
12. Remove the 2 bolts from the rear of the intake manifold.
13. Remove the intake manifold. Cover the lower intake manifold openings.
14. Drain the Coolant system.
15. Move the upper radiator hose clamp, so that the hose can be rotated up and out of the way.
16. Remove the 2 small hoses from the thermostat housing.
17. Remove the 2 bolts from the thermostat housing and rotate the assembly up and out of the way.
    NOTE Wrap shop towels around hose to catch any gasoline spillage.
18. Disconnect the fuel line from the fuel rail.
19. Unlock and disconnect the electrical connectors from the fuel injectors.
20. Remove the wiring harness from the fuel rail.
21. Remove the 2 bolts from the fuel rail.
22. Remove the fuel rail and injectors from the intake manifold.

To install:

1. Install the fuel injectors to the fuel rail.
2. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each injector.
3. Insert fuel injector nozzles into openings in intake manifold. Seat the injectors in place.
4. Install the 2 bolts to the fuel rail. Tighten fuel rail bolts to 170-230 inch lbs. (19.5-25.5 Nm).
5. Install the wiring harness to the fuel rail.
6. Connect and lock the electrical connectors to the fuel injectors.
7. Connect the fuel line to the fuel rail.
8. Rotate the assembly back into place and install the 2 bolts to the thermostat housing tighten to 110 inch lbs. (12.5 Nm).
9. Move the upper radiator house clamp back into place.
10. Install the 2 small hoses to the thermostat housing.
11. Fill the Coolant system.
12. Install the intake manifold.
13. Install the 2 bolts to the rear of the intake manifold tighten to 250 inch lbs. (28 Nm).
14. Install the 5 bolts to the front of the intake manifold and tighten to 250 inch lbs. (28 Nm).
15. Install the vacuum lines to the rear of the intake manifold.
16. Connect and lock the MAP sensor electrical connector.
17. Install the cables to the throttle body bracket.
18. Install the throttle and speed control cables to the throttle body.
19. Install the throttle control shield.
20. Connect and lock the electrical connections at the throttle body.
21. Connect the purge hose to the throttle body.
22. Connect the throttle body inlet hose to the throttle body and tighten clamps to 20-30 inch lbs. (2-4 Nm).
23. Connect the negative battery cable.
24. Use the DRB® scan tool ASD Fuel System Test to pressurize the fuel system. Check for leaks.

Removal & Installation

Except Turbocharged Models

WARNING Release fuel system pressure before servicing fuel system components. Service vehicles in well ventilated areas and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or *****.

1. Release fuel system pressure.
2. Remove the air cleaner lid, disconnect the inlet air temperature sensor and makeup air hose.
3. Remove the negative battery cable.
4. Remove the engine cover or throttle control shield if equipped.
   NOTE Wrap shop towels around hose to catch any gasoline spillage.
5. Disconnect fuel supply tube from rail.
6. Remove the Intake Manifold, refer to the Engine section.
7. Disconnect electrical connectors from fuel injectors.
8. Remove bolts holding fuel rail.
9. Remove the fuel rail and injectors.
10. Remove the injectors from the fuel rail.

To install:

1. Install injectors to the fuel rail.
2. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each injector.
3. Insert fuel injector nozzles into openings in intake manifold. Seat the injectors in place. Tighten fuel rail bolts to 170-230 inch lbs. (19.5-25.5 Nm).
4. Attach electrical connectors to fuel injectors.
5. Connect fuel supply tube to fuel rail. Refer to Quick Connect Fittings in the Fuel Delivery section
6. Install Intake Manifold, refer to the Engine section.
7. Install the engine cover or throttle control shield if equipped.
8. Install the negative battery cable.
9. Install the air cleaner lid, connect the inlet air temperature sensor and makeup air hose. Tighten air inlet tube clamps to 20-30 inch lbs. (2-4 Nm).

Turbocharged Models

WARNING Release fuel system pressure before servicing fuel system components. Service vehicles in well ventilated areas and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or *****.

1. Release the fuel system pressure.
2. Disconnect the negative battery cable.
3. Disconnect the throttle body inlet hose and remove from throttle body.
4. Disconnect the purge hose from the throttle body.
5. Unlock and disconnect the electrical connection at the throttle body.
6. Remove the throttle control shield .
7. Remove the throttle and speed control cables from the throttle body.
8. Remove the cables from the throttle body bracket.
9. Unlock and disconnect the MAP sensor electrical connector.
10. Remove the vacuum lines from the rear of the intake manifold.
11. Remove the 5 bolts from the front of the intake manifold.
12. Remove the 2 bolts from the rear of the intake manifold.
13. Remove the intake manifold. Cover the lower intake manifold openings.
14. Drain the Coolant system.
15. Move the upper radiator hose clamp, so that the hose can be rotated up and out of the way.
16. Remove the 2 small hoses from the thermostat housing.
17. Remove the 2 bolts from the thermostat housing and rotate the assembly up and out of the way.
    NOTE Wrap shop towels around hose to catch any gasoline spillage.
18. Disconnect the fuel line from the fuel rail.
19. Unlock and disconnect the electrical connectors from the fuel injectors.
20. Remove the wiring harness from the fuel rail.
21. Remove the 2 bolts from the fuel rail.
22. Remove the fuel rail and injectors from the intake manifold.

To install:

1. Install the fuel injectors to the fuel rail.
2. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each injector.
3. Insert fuel injector nozzles into openings in intake manifold. Seat the injectors in place.
4. Install the 2 bolts to the fuel rail. Tighten fuel rail bolts to 170-230 inch lbs. (19.5-25.5 Nm).
5. Install the wiring harness to the fuel rail.
6. Connect and lock the electrical connectors to the fuel injectors.
7. Connect the fuel line to the fuel rail.
8. Rotate the assembly back into place and install the 2 bolts to the thermostat housing tighten to 110 inch lbs. (12.5 Nm).
9. Move the upper radiator house clamp back into place.
10. Install the 2 small hoses to the thermostat housing.
11. Fill the Coolant system.
12. Install the intake manifold.
13. Install the 2 bolts to the rear of the intake manifold tighten to 250 inch lbs. (28 Nm).
14. Install the 5 bolts to the front of the intake manifold and tighten to 250 inch lbs. (28 Nm).
15. Install the vacuum lines to the rear of the intake manifold.
16. Connect and lock the MAP sensor electrical connector.
17. Install the cables to the throttle body bracket.
18. Install the throttle and speed control cables to the throttle body.
19. Install the throttle control shield.
20. Connect and lock the electrical connections at the throttle body.
21. Connect the purge hose to the throttle body.
22. Connect the throttle body inlet hose to the throttle body and tighten clamps to 20-30 inch lbs. (2-4 Nm).
23. Connect the negative battery cable.
24. Use the DRB® scan tool ASD Fuel System Test to pressurize the fuel system. Check for leaks.

1. Disconnect the negative battery cable with a socket wrench and relieve the fuel system pressure. Disconnect the vacuum hose and remove the intake manifold collector from the fuel pressure regulator.
2. Detach the fuel hoses from the fuel rail with a socket wrench and disconnect the fuel injector electrical connectors. Remove the fuel rail mounting bolts with a socket wrench so you can separate the fuel rail assembly from the intake manifold with the fuel injectors still attached.
3. Push on the fuel injector tail piece to separate the injector from the rail. Discard the fuel injector O-rings.
4. Lubricate the new O-rings with a small amount of clean engine oil and install the new fuel injector by reversing the removal procedure. Use a torque wrench to tighten the fuel rail mounting bolts in two stages. First, torque the bolts to between 84 and 96 inch pounds and then torque them to between 15 and 20 foot pounds

ok now before you start disconnect the negative battery cable then relieve the fuel pressure by opening the gas cap, then remove the valve cover, then the throttle body, remove the two clamps then disconnect the wire harness from the intake manifold, then the four injectors connectors from the injectors,then remove the engine wire protector from the right side of the intake manifold,remove the EGR valve and the EGR valve pipe,remove the top fitting on the fuel filter and remove the fuel line from the fuel filter,move the brake booster vacuum hose from the intake manifold disconnect the fuel line from the fuel rail,remove the fuel rail bolts, then remove the fuel injectors from the fuel rail,and when replacing the injectors always put new seals because the get hard and may not seal properly

If you're replacing with a stock intake it's a pretty straight forward job...drain coolant, disconnect battery, remove belt, remove alternator and bracket to intake manifold, take note of where each spark plug wire goes, twist plug wires 1/4 turn in each direction then pull up being careful not to tear long rubber boots on wires, leave spark plugs in so no dirt or coolant gets into cylinders.remove e.g.r tube from throttle body,disconnect all vacuum lines and all sensor connectors,you have to be careful removing injector connectors because they become brittle and will break very easily, remove bolts for throttle body and remove body,.relieve fuel pressure from fuel rail by putting on a fuel pressure tester and with a relief valve, there's various ways to release fuel pressure, this is safest, then disconnect fuel line from rail (if you don't want to do it that way you can leave fuel line on and remove 4 8 mm bolts for fuel rail and remove rail and fuel injectors all together, take injectors out from intake not fuel rail by pulling on them from bottom of injectors near intake)remove coolant hoses at back passengers side of intake, remove 2 10 mm bolts for thermostat housing, remove T stat...there may be a bracket on the drivers side rear of intake, (remove top 15 mm bolt, and remove ground cable at back side of head, think it's a 13 mm bolt, then remove 15 mm bolt holding the back of bracket, it's gonna be tight back there but doable with wrench) remove the rest of the 10 mm bolts holding the intake manifold on, remove intake...remove intake gaskets taking care not to let any dirt or debris to get into head ports, I usually put a clean rag in each hole, and clean around them then blow out anything that might have fallen into any ports.you can look rite down into them to make sure everything is clean.make sure all dirt is off head surface and install new gaskets, they lock into place on heads if installed correct. Put on new intake and hand tighten bolts..these bolts have to be torqued in order..starting from the middle of intake torque bolts to 15-22 lb-ft going in a crossover order (right side, left side, right side in an X pattern from center out)...install all connectors and components in reverse order , fill fluids and check over for any leaks or anything loose...I maverick have missed a few small steps but think im pretty close...this isn't a bad job, but take your time and mark anything you think you might not remember where it goes...good luck..any other questions please contact me..

Yes you do, the following info explains the necessary procedure.



Click here to enlarge image.

Click here to enlarge image.

1. Properly relieve the fuel system pressure.
2. Disconnect the negative battery cable. Place a clean drain pan under the radiator, open the drain **** and drain the cooling system.
3. Remove the air cleaner assembly and the fuel injector sight shield.
4. Disconnect the cables from the throttle body and mount bracket.
5. Remove the coolant recovery reservoir.
6. Remove the inner fender electrical cover on the right side.
7. Remove the right rear crossover pipe heat shield.
8. Disconnect the fuel lines from the fuel rail and from the cable bracket.
9. Remove the alternator and brace.
10. Remove the throttle body cable mounting bracket with the vacuum lines and disconnect the vacuum lines.
11. Tag and detach the electrical connections at the throttle body and both banks of fuel injectors.
12. Disconnect the vacuum hoses from the canister purge solenoid valve and transaxle module and intake connection.
13. Unbolt the power steering pump and move forward. DO NOT disconnect the fluid lines.
14. Tag and disconnect the spark plug wires position lay aside.
15. Disconnect the coolant bypass hose from the intake manifold.
16. Remove the solenoid valve mounting bracket and power steering support brace from the intake manifold.
17. Disconnect the heater pipes from the intake and front cover.
18. Remove the alternator support brace from the intake.
19. Disconnect the upper radiator hose from the housing.
20. Remove the thermostat housing and thermostat from the intake.
21. Detach the electrical connector from the temperature sensor and sensor switch.
22. Unfasten the intake manifold bolts, then remove the manifold as an assembly. Remove and discard the gaskets.
23. If separating the upper manifold from the lower, proceed as follows:
24. Remove the fuel rail and fuel injectors.
25. Detach the coolant sensor switch.
26. Remove the manifold end cap cover.
27. Remove the upper intake manifold and throttle body assembly from the lower manifold. Remove and discard the gaskets. To install:
    
28. Thoroughly clean all gasket mating surfaces.
29. If replacing the upper manifold, proceed as follows:
30. Apply a 1⁄16 in. bead of Loctite® Instant Gasket Eliminator 51845 or equivalent to the lower manifold mating surface. Make sure to circle all bolt holes.
31. Carefully lower the upper manifold and throttle body assembly onto the lower manifold.
32. Tighten the upper manifold retaining bolts to 19 ft. lbs. (26 Nm).
33. Install the manifold end cap cover and the coolant sensor switch.
34. Install the fuel injectors and rail to the manifold assembly.
35. Clean the mating surfaces and install the intake manifold gaskets and seals. Apply sealer to the ends of the of the intake manifold seals.
36. Position the intake manifold and apply a suitable thread lock compound to the bolt threads. Tighten the retaining bolts to 88 inch lbs. (10 Nm), twice, in the sequence shown in the accompanying figure.
37. Attach the electrical connector to the temperature sensor and sensor switch.
38. Install the thermostat housing and thermostat with a new gasket.
39. Connect the alternator support brace to the intake.
40. Install the solenoid valve mounting bracket and power steering support brace to the intake manifold.
41. Connect the heater pipes to the intake and front cover.
42. Attach the coolant bypass hose to the intake manifold.
43. Install the power steering pump support bracket and tighten to 37 ft. lbs. (50 Nm).
44. Install the spark plug wires on both sides.
45. Install the belt tensioner pulley and tighten to 33 ft. lbs. (45 Nm).
46. Install the power steering pump.
47. Connect the vacuum hoses to the canister purge solenoid valve and transaxle module and intake connection.
48. Attach the electrical connections at the throttle body and both banks of fuel injectors.
49. Install the alternator and brace.
50. Connect the throttle body cable mounting bracket with the vacuum lines.
51. Install the right rear crossover pipe heat shield.
52. Install the cables to the throttle body.
53. Connect the fuel lines to the fuel rail and mount bracket.
54. Install the inner fender electrical cover on the right side.
55. Install the coolant recovery reservoir and upper radiator hose. Fill the cooling system.
56. Install the air cleaner assembly and the fuel injector sight shield.
57. Connect the negative battery cable.

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

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

3.3L & 3.8L Engines
Firing order: 1-2-3-4-5-6
Distributorless Ignition System
The Driver's Side Front spark plug is the #6 cylinder.

Fig. 1: Supercharger assembly and related parts

REMOVAL & INSTALLATION

1. Disconnect the negative battery cable.
2. Remove the accessory drive belt from the supercharger pulley.
3. Relieve the fuel pressure and remove the fuel injector sight shield.
4. Disconnect the fuel pipes from the fuel rail and vacuum hose at the pressure regulator.
5. Disconnect the electrical connectors from the fuel injectors and remove the fuel rail mounting bolts. Remove the fuel rail with the injectors intact.
6. Disconnect the electrical connectors at the IAC, TPS, MAF, EGR and boost control solenoid. Lay the wiring harness aside.
7. Remove the air intake duct and remove the EGR pipe from the supercharger.
8. Disconnect the throttle cable and the cruise control cable. Remove the cable bracket.
9. Remove the tensioner bracket to supercharger mounting stud.
10. Remove the supercharger to intake manifold bolts, remove the supercharger from the intake manifold. Remove the supercharger gasket and coolant passage O-rings. To install:
    
11. Replace the oil passage O-rings and the supercharger gasket.
12. Install the supercharger and bolts. Install the tensioner bracket-to-supercharger bolt. Tighten the bolts to 19 ft. lbs. (26 Nm).
13. Install the cable bracket and connect the throttle and cruise control cables.
14. Connect the EGR pipe to the supercharger and install the air intake duct.
15. Connect the electrical connectors to the IAC, TPS, MAF, EGR and boost control solenoid.
16. Install the fuel rail and bolts and tighten the bolts to 15 ft. lbs. (24 Nm).
17. Connect the connectors to the fuel injectors and the vacuum hoses at the pressure regulator.
18. Connect the fuel pipes to the fuel rail and install the fuel injector sight shield.
19. Install the accessory drive belt to the supercharger and connect the negative battery cable.

Fuel pressure regulator is located on the fuel rail. 1. Remove top engine covers and fuel rail mounting bolts. 2. Disconnect vacuum hose. 3. Remove regulator clamp, noting position of regulator. 4. Pull regulator out with shop towel (full of fuel) don't lose thrust washer behind. 5. Replace with new O-rings.