Mazda 6. Manual — part 21

F–20

FUEL SYSTEM, EXHAUST SYSTEM

Fuel flow

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EXHAUST SYSTEM OUTLINE

A6E391440000T01

Features

•

The exhaust manifold is located behind the engine.

•

This layout allows for shorter exhaust pipes and improved exhaust efficiency. Moreover, due to the shorter distance to the catalytic
converter, temperature decrease of exhaust emission is prevented and catalyst is more efficient.

•

Temperature decrease of exhaust emission is further prevented with double layer exhaust manifold pipes.

A6E3912W035

1

Fuel pump unit

2

Fuel gauge sender unit

3

Fuel pump

4

Fuel filter (high-pressure)

5

Fuel filter (low-pressure)

6

Fuel reservoir cup

7

Pressure regulator

8

Fuel jet pump

9

One-way valve

10

Main fuel flow

11

Return fuel flow

12

To fuel distributor

13

Fuel tank

EXHAUST SYSTEM

EXHAUST SYSTEM

F–21

F

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EXHAUST SYSTEM STRUCTURAL VIEW

A6E391440000T02

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A6E3914W001

1

Main silencer

2

Middle pipe

3

TWC

4

Exhaust manifold

5

HO2S (front)

6

HO2S (rear)

7

L3 engine model

F–22

EMISSION SYSTEM

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OUTLINE

A6E391601007T01

•

The function, structure and operation of each part in the emission system of the Mazda6 (GG) L3, LF, and L8
engine models are the same as those of the MPV (LW) FS engine models, except for the following:
— Charcoal canister has been changed.
— The pulsation reduce chamber has been adopted. (R.H.D.)

×

: Applied

–: Not applied

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EMISSION SYSTEM

Item

Mazda6 (GG)

Current

MPV (LW)

FS

Remark for new model

L3

LF

L8

Rollover valve

×

Same as current MPV (LW) FS engine
models

Charcoal canister

×

Same as current MPV (LW) FS engine
models

Evaporative gas check
valve (one-way)

×

Same as current MPV (LW) FS engine
models

Purge solenoid valve

×

Same as current MPV (LW) FS engine
models

PCV valve

×

Same function and operation as current
MPV (LW) FS engine models

TWC

×

Same function as current MPV (LW) FS
engine models

EGR valve

×

Same function and operation as current
MPV (LW) FS engine models

Pulsation reduce chamber
(R.H.D.)

×

–

Newly adopted

EMISSION SYSTEM

F–23

F

EMISSION SYSTEM STRUCTURAL VIEW

A6E391601007T02

Engine room side

Fuel tank side

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A6E3916W024

A6E3916W025