Mazda 1984 RX7 Spezifikationen PDF herunterladen (Seite 31)

DECELERATION CONTROL SYSTEM - CARBURETED

Article Text

1984 Mazda RX7

For iluvmyrx7.com

Saturday, June 08, 2002 10:45PM

ARTICLE BEGINNING

1984 Exhaust Emission Systems

MAZDA RX7 CARBURETED MODELS

DECELERATION CONTROL SYSTEM

DESCRIPTION

The deceleration system is designed to maintain a balanced

air/fuel mixture during deceleration. System consists of 2

anti-afterburn valves, shutter solenoid valve, coasting/shutter

valve, throttle sensor, dashpot (manual transmission models) and

connecting hoses and wiring.

OPERATION

The number 2 anti-afterburn valve (located below air

cleaner) is actuated by the shutter solenoid valve to supply

additional air from air cleaner to intake manifold at initial

deceleration to prevent afterburning of fuel. The coasting/shutter

valve work together to supply air (coasting valve) and fuel (shutter

valve) during deceleration to prevent backfiring.

TESTING

NO. 1 ANTI-AFTERBURN VALVE

1) Warm up engine and run at idle speed. Disconnect the air

pump hose at the air pump. Place a finger over the air hose opening

and make sure that air is not sucked into the air hose at idling

speed.

2) Increase the engine speed more than 3000 RPM and then

decrease rapidly. Make sure the air is sucked into the air hose for a

few seconds while decelerating. Replace air control valve if it does

not operate properly.

NO. 2 ANTI-AFTERBURN VALVE

1) Warm engine and run at idling speed. Disconnect the air

hose running from air cleaner to number 2 anti-afterburn valve and

make sure that air is not sucked into the air hose at idling speed.

2) Increase the engine speed more than 3000 RPM and then

decrease the speed rapidly. Make sure the air is sucked into the air

hose for a few seconds while decelerating. Replace air control valve

if it does not operate properly.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 96 97

Keine Kommentare

Mazda 1984 RX7 Spezifikationen Seite 31