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Section 08
ENGINE MANAGEMENT (4-TEC)
Subsection 02
(OVERVIEW)
08-02-4
SMR2003-026_08-02A.FM
4-TEC Supercharged Models
Air for combustion is drawn at the back of the en-
gine by a mechanical driven supercharger. The
compressed air flows through one 52 mm throttle
body and is controlled by a throttle plate and an
idle bypass valve. The air continues through the
intake manifold, which contains the flame arrester
and goes into the cylinder head.
1. Supercharger
2. Throttle body
FUEL DELIVERY SYSTEM
BASIC OPERATION
When the intake valve reaches the correct posi-
tion, the EMS ECU (Electronic Control Unit) opens
the fuel injector and fuel is discharged into the in-
take port at the air intake manifold by the high fuel
pressure inside the fuel rail. The air/fuel mixture
enters then the combustion chamber through the
open intake valve. This mixture is then ignited by
the spark plug.
INTAKE MANIFOLD
INTAKE MANIFOLD
1. Electronic Control Unit (EMS ECU)
2. Fuel rail
3. Injector
4. Throttle body
5. Ignition coil
6. Manifold air pressure sensor (MAPS)
7. Manifold air temperature sensor (MATS)
INTAKE MANIFOLD (SUPERCHARGED)
1. Electronic Control Unit (EMS ECU)
2. Fuel rail
3. Injector
4. Throttle body
5. Ignition coil
6. Manifold air pressure sensor (MAPS)
7. Manifold air temperature sensor (MATS)
2
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R1503motr214B
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4
5
6
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R1503motr268A
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Summary of Contents for 2003 GTI LE RFI
Page 1: ...www SeaDooManuals net ...
Page 767: ...NOTE www SeaDooManuals net ...
Page 768: ...NOTE www SeaDooManuals net ...
Page 769: ...F00Z0D 2003 GTI MODEL WARNING www SeaDooManuals net ...
Page 770: ...F00Z0C 2003 GTI LE MODEL WARNING www SeaDooManuals net ...
Page 771: ...F00Z0E 2003 GTI LE RFI MODEL WARNING www SeaDooManuals net ...
Page 772: ...F00Z0J 2003 RX DI MODEL WARNING www SeaDooManuals net ...
Page 773: ...F00Z0I 2003 GTX DI MODEL WARNING www SeaDooManuals net ...
Page 774: ...F00Z0K 2003 XP DI MODEL WARNING www SeaDooManuals net ...
Page 775: ...F00Z0F 2003 GTX 4 TEC MODEL WARNING www SeaDooManuals net ...
Page 776: ...F00Z0G 2003 GTX 4 TEC MODEL WITH AUXILIARY DESS MODULE WARNING www SeaDooManuals net ...
Page 777: ...F00Z0B 2003 GTX 4 TEC AND GTX 4 TEC SUPERCHARGED MODELS WARNING www SeaDooManuals net ...
Page 779: ...www SeaDooManuals net ...