M20C-FKS, M20D-FKS INTAKE / EXHAUST EXHAUST MANIFOLD REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during exhaust manifold removal/installation are shown below.
| Replaced Part or Performed Procedure | Necessary Procedure | Effect/Inoperative Function when Necessary Procedure not Performed | Link |
|---|---|---|---|
·
Replacement of air fuel ratio sensor (sensor 1) ·
Gas leak from exhaust system is repaired |
Inspection after repair | ·
Poor idle, etc. ·
Engine start function, etc. |
( 202303,999999,_51,_111785,_0504416,RM1000000029BFF,)
|
| Front exhaust pipe assembly | GPF deposition value clear | ·
MIL comes on ·
Deterioration of fuel efficiency |
(202303,999999,_51,_111785,_0504416,RM1000000029BFF,)
|
| Exhaust manifold | Total short trip estimate | ·
MIL comes on ·
Deterioration of fuel efficiency |
(202303,999999,_51,_111785,_0504416,RM1000000029BFF,)
|
- CAUTION:
- ·
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
·
To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
PROCEDURE
51420
1.REMOVE NO. 2 ENGINE UNDER COVER ASSEMBLY
58165C
2.REMOVE FRONT FLOOR COVER RH
3.REMOVE WIRING HARNESS CLAMP BRACKET
17410
4.REMOVE FRONT EXHAUST PIPE ASSEMBLY
- CAUTION:
-
To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
Disengage the 2 wire harness clamps.
Disconnect the air fuel ratio sensor (for sensor 2) connector.
Disengage the wire harness clamps.
Disconnect the No. 1 exhaust gas temperature sensor connector.
Disengage the 2 wire harness clamps.
Disconnect the No. 2 exhaust gas temperature sensor connector.
Remove the 2 bolts, 2 nuts and disconnect the front exhaust pipe assembly from the exhaust manifold and tail exhaust pipe assembly.
Remove the front exhaust pipe assembly from the 2 exhaust pipe supports.
Remove the 2 gaskets from the front exhaust pipe assembly.
89467B
5.REMOVE AIR FUEL RATIO SENSOR (for Sensor 1)
6.REMOVE NO. 1 VACUUM TRANSMITTING PIPE SUB-ASSEMBLY
- CAUTION:
-
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
Remove the nut and No. 1 vacuuum transmitting pipe bracket.
Using a 14 mm union nut wrench, remove the No. 1 vacuuum transmitting pipe sub-assembly.
17167
7.REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
- CAUTION:
-
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
Remove the 2 bolts and remove the No. 1 exhaust manifold heat insulator from the exhaust manifold.
17118
8.REMOVE MANIFOLD STAY
- CAUTION:
-
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
Remove the bolt, nut and manifold stay from the exhaust manifold and cylinder block sub-assembly.
17141
9.REMOVE EXHAUST MANIFOLD
- CAUTION:
-
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
Using a 12 mm deep socket wrench, remove the 7 nuts and exhaust manifold from the cylinder head sub-assembly.
Remove the exhaust manifold to head gasket from the cylinder head sub-assembly.
17168
10.REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR
Remove the 3 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold.