To Next Page

To Previous Page

Section 08 ENGINE MANAGEMENT (4-TEC)

Subsection 01 (OVERVIEW)

R1503motr267A

1. Supercharger

2. Throttle body

4-TEC Supercharged Intercooled Engine

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 throt-

tle body and is controlled by a throttle plate and

an idle bypass valve. The air continues through

the intake manifold, which contains the water/air

intercooler (which cools down the intake air) and

goes into the cylinder head.

R1503motr332A

3 2

1. Supercharger

2. Intercooler

3. Throttle body

FUEL DELIVERY SYSTEM

BASIC OPERATION

When the intake valve reaches the correct posi-

tion, the ECM (Engine Control Module) opens the

fuel injector and fuel is discharged into the intake

port at the air intake manifold by the high fuel pres-

sure 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

R1503motr214B

INTAKE MANIFOLD (4-TEC)

1. Engine Control Module (ECM)

2. Fuel rail

3. Injector

4. Throttle body

5. Ignition coil

6. Manifold air pressure sensor (MAPS)

7. Manifold air temperature sensor (MATS)

394 smr2004-Complete Line Up

SeaDoo GTI User Manual

Questions and Answers: