Honda Civic Service Manual: Intake Manifold Removal and Installation (R18Z1)
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1. |
Intake Manifold Exploded View |
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Removal
NOTE: Refer to the Exploded View if needed during this procedure.
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NOTE: Set the wiper arms to the auto-stop position before removal.
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1.
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Remove the cowl top wiper covers (A).
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2.
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Remove the wiper arms (B).
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1.
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Remove the side cowl cover (A).
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2.
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The left side is shown; repeat on the right side.
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1.
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Remove the center cowl cover (A).
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2.
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Disconnect the windshield washer tube (B).
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3.
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If necessary, remove the hood rear seal (C).
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1.
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Remove the under cowl panel (A).
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1.
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Remove the fuel fill cap to relieve the pressure in the fuel
tank.
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NOTE: For specific operations, refer to the user's manual that
came with the Honda Diagnostic System (HDS). Make sure the HDS is
loaded with the latest software.
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1.
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Connect the HDS to the data link connector (DLC) (A) located
under the driver's side of the dashboard.
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2.
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Turn the ignition switch to ON (II).
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3.
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Make sure the HDS communicates with the vehicle. If it does not
communicate, go to the DLC circuit troubleshooting.
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1.
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Turn the ignition switch to ON (II).
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2.
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From the INSPECTION MENU of the HDS, select Fuel Pump OFF, then
start the engine, and let it idle until it stalls.
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NOTE:
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Do not allow the engine to idle above 1,000 rpm
or the ECM/PCM will continue to operate the fuel
pump.
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Pending or Confirmed DTC may be set during this
procedure. Check for DTCs, and clear them as needed.
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3.
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Turn the ignition switch to LOCK (0).
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8. |
Battery Terminal - Disconnection |
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1.
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Make sure the ignition switch is in LOCK (0).
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2.
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Disconnect and isolate the negative cable and battery sensor
(A) from the battery.
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NOTE: Always disconnect the negative side first.
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3.
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Disconnect the positive cable (B) from the battery.
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9. |
Fuel Pressure - Relieving |
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1.
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Remove the quick-connect fitting cover (A).
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2.
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Check the fuel quick-connect fitting for dirt, and clean it if
needed.
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3.
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Place a rag or shop towel over the quick-connect fitting (A).
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4.
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Disconnect the quick-connect fitting: Hold the connector (A)
with one hand, and squeeze the retainer tabs (B) with the other
hand to release them from the locking tabs (C). Pull the connector
off.
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NOTE:
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Be careful not to damage the line (D) or other
parts.
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Do not use tools.
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If the connector does not move, keep the retainer
tabs pressed down, and alternately pull and push
the connector until it comes off easily.
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Do not remove the retainer from the line; once
removed, the retainer must be replaced with a new
one.
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1.
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Disconnect the intake air duct (A).
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2.
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Remove the air cleaner (B).
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3.
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Remove the harness clamp (C).
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1.
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Remove the intake air duct.
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12. |
Throttle Body - Removal |
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1.
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Remove the throttle body without disconnecting the hoses.
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13. |
Intake Manifold Assembly |
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1.
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Disconnect the EVAP canister hose (A), the brake booster vacuum
hose (B), and the PCV hose (C).
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2.
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Remove the heater hose clamp bracket.
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3.
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Remove the intake manifold bracket.
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4.
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Disconnect the connectors (A).
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5.
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Remove the harness clamps.
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6.
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Remove the intake manifold assembly.
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Installation
NOTE: Refer to the Exploded View if needed during this procedure.
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1. |
Intake Manifold Assembly |
mm
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1.
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Install the intake manifold assembly (A) with new gaskets (B).
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2.
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Tighten the bolts/nuts in a crisscross pattern in three steps,
beginning with the inner bolt.
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3.
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Install the connectors (A).
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4.
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Connect the harness clamps.
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5.
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Install the intake manifold bracket.
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6.
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Install the heater hose clamp bracket.
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7.
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Connect the EVAP canister hose (A), the brake booster vacuum
hose (B), and the PCV hose (C).
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2. |
Throttle Body - Installation |
mm
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1.
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Install the throttle body (A) with new O-ring (B).
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1.
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Install the intake air duct.
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1.
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Install the harness clamp (A).
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2.
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Install the air cleaner (B).
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3.
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Connect the intake air duct (C).
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5. |
Injector Base Fuel Feed Hose - Reconnection |
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1.
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Connect the fuel feed hose.
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22mm)2222
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1.
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Install the under cowl panel (A).
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1.
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If necessary, install the hood rear seal (A).
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2.
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Connect the windshield washer tube (B).
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3.
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Install the center cowl cover (C).
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1.
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Install the side cowl cover (A).
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2.
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The left side is shown; repeat on the right side.
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1.122
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NOTE: Set the wiper arms to the auto-stop position before installation.
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1.
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Install the wiper arms (A).
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2.
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Install the cowl top wiper covers (B).
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1.
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Install the fuel fill cap.
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11. |
Battery Terminal - Reconnection |
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NOTE: If the battery performs abnormally, test the battery.
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1.
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Clean the battery terminals.
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2.
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Connect the positive cable (A) to the battery.
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NOTE: Always connect the positive side first.
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3.
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Connect the negative cable and battery sensor (B) to the battery.
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4.
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Apply multipurpose grease to the terminals to prevent corrosion.
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1.
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Connect the HDS to the data link connector (DLC) (A) located
under the driver's side of the dashboard.
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2.
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Turn the ignition switch to ON (II).
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3.
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Make sure the HDS communicates with the vehicle. If it does not
communicate, go to the DLC circuit troubleshooting.
|
|
|
|
1.
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From the INSPECTION MENU of the HDS, select Fuel Pump ON.
|
|
NOTE: Pending or Confirmed DTC may be set during this procedure.
Check for DTCs, and clear them as needed.
|
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2.
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Turn the ignition switch to LOCK (0).
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1.
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Turn the ignition switch to ON (II) (but do not operate the starter
motor). The fuel pump runs for about 2 seconds, and fuel pressure
rises. Repeat this two or three times, then make sure there are
no fuel leaks.
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15. |
Tubes, Hoses, and Connectors After Installation Check |
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1.
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After installation, check that all tubes, hoses, and connectors
are installed correctly.
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View
1.
Intake Manifold Exploded View (Natural Gas Model)
Exploded View
Removal
NOTE: Refer to the Exploded View if needed during this pr ...