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Home >> Mazda >> 1986 >> RX-7 Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Deceleration Control System >> System Testing >> Fuel Cut System
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Fuel Cut System

During deceleration above a certain engine speed, fuel in not injected from injectors. Fuel cut speeds are listed in the FUEL CUT SPEEDS  chart. 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

Application RPM
In Neutral 1500-1600
In Gear 1200-1300
Fig 1: Deceleration Control System
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