Begin air injection pump installation by connecting three insulators to the air pump assembly through 3 bolts having a torque of 10 Nm (102 kgf-cm, 7 ft-lbf). Proceed by assembling the air pump assembly with bracket through four bolts before tightening them to 16 Nm (163 kgf-cm, 12 ft-lbf). After that connect the pressure sensor connector and air switching valve connector, complete the installation with the No. 2 air hose connection to the air switching valve. The water by-pass pipe sub-assembly should be installed first followed by the intake manifold assembly with proper hose and connector connections from the intake manifold. Start the installation of fuel No. 2 hose then install fuel hose before adding the air cleaner hose assembly and throttle body cover sub-assembly. The procedure ends with engine coolant addition as well as leak checks for both coolant and fuel components.