Outer Component Parts

Tightening Procedures

Intake manifold





^ Tighten in numerical order shown in the figure.
1. Tighten all bolts and nuts to 5 to 10 Nm (0.5 to 1.0 kg-m, 3.6 to 7.2 ft. lbs.).
2. Tighten all bolts and nuts to 26 to 31 Nm (2.7 to 3.2 kg-m, 20 to 23 ft. lbs.).
3. Repeat step 2 at least five times to have all bolts and nuts tightened at a torque of 26 to 31 Nm (2.7 to 3.2 kg-m, 20 to 23 ft. lbs.).

Fuel tube





^ Tighten in numerical order shown in the figure.
1. Tighten all bolts to 9.3 to 10.8 Nm (0.95 to 1.1 kg-m, 6.9 to 8.0 ft. lbs.).
2. Tighten all bolts to 21 to 26 Nm (2.1 to 2.7 kg-m, 15 to 20 ft. lbs.).
^ Do not disassemble fuel tube assembly.

Fuel pressure regulator





Tighten fuel pressure regulator to 2.9 to 3.8 Nm (0.3 to 0.39 kg-m, 26.0 to 33.9 inch lbs.).
^ Tighten screws evenly several times to have the fuel pressure regulator tightened at the specified torque.
^ Always replace 0-ring with new ones.
^ Lubricate 0-ring with new engine oil.

Sub-fuel tube





1. Temporarily tighten bolt (2).
2. Tighten bolt (1) to 20.6 to 26.5 Nm (2.10 to 2.70 kg-m, 15.19 to 19.55 ft. lbs.).
3. Tighten bolt (2) to 8.5 to 10.8 Nm (0.87 to 1.10 kg-m, 75.5 to 95.5 inch lbs.).

Throttle body





^ Tighten in numerical order shown in the figure.
1. Tighten all bolts to 8.8 to 10.8 Nm (0.9 to 1.1 kg-m, 6.5 to 8.0 ft. lbs.).
2. Tighten all bolts to 17.7 to 21.6 Nm (1.8 to 2.2 kg-m, 13 to 16 ft. lbs.).

EGR guide tube





1. Tighten all bolts to 9 to 10 Nm (0.9 to 1.0 kg-m, 6.5 to 7.2 ft. lbs.).
2. Tighten all bolts to 21 to 26 Nm (2.1 to 2.7 kg-m, 15 to 20 ft. lbs.).
^ Before installing EGR guide tube, tighten intake manifold collector and collector bracket.

Intake manifold collector





Tighten bolts and nuts to 18 to 22 Nm (1.8 to 2.2 kg-m, 13 to 16 ft. lbs.) in numerical order shown in the figure.