Engine Turns Over But Will Not Start
- Check fuel tank, filter, and lines for blockage or other restriction. Test control relay wiring harness and control relay. Check fuel pump for proper operation.
- Check cold start injector operation and wiring. Check for defective thermo time switch. Check auxiliary air valve operation. Check temperature sensor resistance values. Check control relay, thermo-time switch, and air flow meter.
- If malfunction remains after checking and/or repairing noted systems, replace ECU with a known good unit. If malfunction ceases, original ECU is defective and must be replaced.