Contents: Upper pipeline ⇊ Bottom pipeline ⇊
Attention! Proceed with the procedure only after the power unit has completely cooled down.
Upper pipeline
1. Release the pressure in the fuel system (see Chapter Power and exhaust systems).
2. Disconnect the negative cable from the battery.
Warning! If the car stereo system is equipped with a security code, make sure you have the correct combination to activate the audio system before disconnecting the battery! 3. Disconnect the air intake duct, throttle linkages, and all hoses and wiring from the throttle body (see Chapter Power and exhaust systems). Plug the cooling system hoses connected to the throttle body.
4. Remove all plastic covers from the intake manifold as provided by the design.
5. Proceeding in the reverse order to that shown in the illustration, loosen the mounting bolts and nuts and remove the pipeline with the throttle body attached to it.
6. Before installing the upper pipe, carefully clean the mating surfaces of the lower one, removing all traces of the old gasket material and sealant. Wipe the surfaces with a rag soaked in acetone. Put a new gasket on the three mounting studs on the lower pipe, then install the upper pipe and tighten the fasteners to the required force in a strictly defined order. Check the coolant level, if necessary, make the appropriate adjustment (see Chapter Settings and ongoing maintenance).
Bottom pipeline
1. Remove the steering pump (see Chapter Suspension and steering) and without disconnecting the hoses, move it to the side.
2. After marking, disconnect the electrical wiring from the fuel injectors. Remove the fuel lines from the lower intake manifold (see Chapter Power and exhaust systems).
3. Loosen the mounting bolts and nuts and remove both sections of the lower intake manifold from the cylinder heads. If any section is stuck and cannot be separated, tap it around the perimeter with a hammer.
Attention! Do not attempt to separate the pipeline by levering its sections by the mating surfaces under any circumstances - any mechanical damage to the latter can lead to the development of leaks.
Fuel injectors can be left in their standard locations.
4. Using a scraper made of a relatively soft material, carefully clean the mating surfaces of the pipeline and cylinder heads from the remains of the sealant and traces of the old gasket material, then wipe them with a rag soaked in acetone.
5. Place new gaskets, then install the lower intake manifold sections onto the cylinder heads.
Attention! Make sure that the gaskets are correctly positioned on the guide pins. Screw on the section fasteners.
6. Tighten the fasteners to the required torque in three stages. To avoid deformation, move from the center of the sections to their edges, moving from one fastener to another in a diagonal order.
7. Further installation is carried out in the reverse order of dismantling the components.
8. Check the coolant level and make adjustments if necessary (see Chapter Settings and ongoing maintenance).
9. Start the engine and check for fuel and coolant leaks. Also make sure there are no vacuum losses.
(Article source on the website «www.HondaBook.ru»)