Deceleration Shutoff Check
- Start engine and bring to operating temperature. Ensure control valve on fuel gauge is open. Briefly increase engine speed to 2500 RPM. As engine speed drops, lower chamber pressure should increase by 5.8 psi (.4 kg/cm2 ).
- Fuel delivery should start again at 900 RPM. If either pressure or engine speed reading is incorrect, test throttle valve microswitch, control current to differential pressure regulator, ECU, and TD ignition signal.