Acura CSX. Instruction - page 70
01
SNR9AEAA20336335001KDAT00
Exploded View - K20Z2 engine
9-2
Intake Manifold and Exhaust System
Intake Manifold Removal and Installation
INTAKE AIR BYPASS (IAB)
THERMAL VALVE
JOINT
GASKET
THROTTLE BODY
INTAKE MANIFOLD BRACKET
MANIFOLD
ABSOLUTE
PRESSURE
(MAP)
SENSOR
INJECTOR BASE
EXHAUST GAS
PRECIRCULATION
(EGR) PLATE
6 x 1.0 mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
8 x 1.25 mm
22 N·m
(2.2 kgf·m,
16 lbf·ft)
GASKET
INTAKE MANIFOLD
O-RING
5 x 0.8 mm
3.4 N·m
(0.35 kgf·m, 2.5 lbf·ft)
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
GASKET
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
GASKET
6 x 1.0 mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
6 x 1.0 mm
12 N·m
(1.2 kgf·m,
8.7 lbf·ft)
INTAKE MANIFOLD
CHAMBER
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
GASKET
MARK
Tigten the valve to 15 N·m
(1.5 kgf·m, 11 lbf·ft), then turn the
valve joint toward the mark.
Replace.
Replace if cracked or
if mating surface is
damaged.
Replace.
Replace if cracked or
if mating surface is
damaged.
Replace.
Replace.
Replace.
Replace.
02
03
04
*01
Removal - K20Z2 engine
9-3
A
B
C
A
B
C
D
A
1. Remove the engine cover.
2. Disconnect the vacuum hose (A) and the breather
pipe (B), then remove the intake air duct (C).
3. Disconnect the engine wire harness connectors,
and remove the wire harness clamps from the
intake manifold:
• Manifold absolute pressure (MAP) sensor
connector
• Throttle actuator connector
4. Disconnect the evaporative emission (EVAP)
canister hose (A) and the brake booster vacuum
hose (B).
5. Remove the harness bracket mounting bolt (C) and
the brake booster vacuum line bracket mounting
bolt (D).
6. Disconnect the water bypass hoses (A), then plug
the water bypass hoses.
06
07
08
01
Installation - K20Z2 engine
9-4
Intake Manifold and Exhaust System
A
B
B
A
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
B
A
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
7. Raise the vehicle on the lift to full height.
8. Remove the splash shield (see step 25 on page 5-5).
9. Remove the connector (A) from the intake manifold
bracket (B), then remove the intake manifold
bracket.
10. Lower the vehicle on the lift.
11. Remove the intake manifold.
1. Install the intake manifold (A) with a new gasket (B),
and tighten the bolts and the nuts in a crisscross
pattern in three steps, beginning with the inner bolt.
2. Raise the vehicle on the lift.
3. Install the intake manifold bracket (A), then install
the connector (B) to the intake manifold bracket.
4. Install the splash shield (see step 40 on page 5-20).
5. Lower the vehicle on the lift.
*02
11
12
13
9-5
A
A
B
C
6 x 1.0 mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft)
D
6 x 1.0 mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft)
B
C
A
6 x 1.0 mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
6. Connect the water bypass hoses (A).
7. Connect the evaporative emission (EVAP) canister
hose (A) and the brake booster vacuum hose (B).
8. Install the harness bracket mounting bolt (C) and
the brake booster vacuum line bracket mounting
bolt (D).
9. Connect the engine wire harness connectors, and
install the wire harness clamps to the intake
manifold.
• Manifold absolute pressure (MAP) sensor
connector
• Throttle actuator connector
10. Install the intake air duct (A), then connect the
vacuum hose (B) and the breather pipe (C).
11. Install the engine cover.
12. After installation, check that all tubes, hoses and
connectors are installed correctly.
13. Clean up any spilled engine coolant.
14. Refill the radiator with engine coolant, and bleed
the air from the cooling system with the heater
valve open (see step 6 on page 10-8).