Mazda 1984 RX7 Specifications Page 35

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DECELERATION CONTROL SYSTEM - EFI
Article Text
1984 Mazda RX7
For iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Saturday, June 08, 2002 10:46PM
ARTICLE BEGINNING
1984 Exhaust Emission Systems
MAZDA RX7 FUEL INJECTED MODELS
DECELERATION CONTROL SYSTEM
DESCRIPTION
The deceleration system is designed to maintain a balanced
air/fuel mixture during deceleration. This helps prevent backfiring.
System consists of a fuel cut operation, throttle sensor, anti-
afterburn valve, and dashpot.
FUEL CUT SYSTEM TEST
During deceleration above a certain engine speed, fuel in not
injected from injectors. Fuel cut speeds are listed in the Fuel Cut
Speeds table. To check fuel cut operation, hold engine speed at 2000
RPM and make sure engine speed varies when throttle sensor is pushed
in with a finger.
Fuel Cut Speeds Chart
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Application RPM
In Neutral ................ 1500-1600
In Gear ................... 1200-1300
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