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Home >> Renault >> 1972 >> R12 Not Available, Not Available Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> RENAULT R12 Engine Modification >> Service Procedures >> Fast Idle Adjustment
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Fast Idle Adjustment

  1. The decelerator is fitted with an air screw and fuel screw. The solenoid flap valve must be electrically actuated to allow decelerator to operate before further adjustments are made.
  2. On manual transmission, disconnect grey wire (+) on solenoid flap valve and tape the connector. Connect a jumper wire between the terminal and the (+) terminal of the ignition coil.
  3. On automatic transmission, disconnect pink (-) wire on solenoid flap valve and then connect jumper wire between pink wire and ground.
  4. With solenoid flap valve actuated, turn air screw to obtain an engine speed of 1400-1500 RPM. Check that CO level is 2%. If CO level incorrect, turn fuel screw to achieve specified RPM and CO level.
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