Starting a cold engine
Idle speed and fuel injection timing are determined by the ECU.
Adjustment
1. Warm up the engine to operating temperature, check the idle speed and cool the engine.
2. On a cold engine, check the clearance between the adjusting screw and the fuel pump control lever. At a coolant temperature of 20°C, the gap should be between 0.8 and 1.1 mm.
3. To adjust the clearance, loosen the lock nut and turn the adjusting screw to set the required clearance, then install the lock nut.
4. Start the engine and check the idle speed. If the idle speed differs from the required, loosen the lock nut and, by turning the adjusting screw, set the required speed, then tighten the lock nut.
5. Warm up the engine and check the idle speed. In the process of warming up the engine, the gap between the adjusting screw and the fuel pump control lever should gradually decrease until the screw is in full contact with the lever. Otherwise, there is damage in the engine cold start system, and it is necessary to repair it at the maintenance stage.
Visitor comments