October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Difficult To Start Or Will Not Start
- Check battery condition.
- Check condition of spark plugs.
- Ensure fuel system pressure is correct.
- Check Electronic Fuel Injection (EFI) main fuse located in fuse box (if equipped).
- Ensure inertia switch circuit is not open (Navajo).
- Verify crank angle sensor has correct resistance values (B2300, B4000, MX-3 1.8L, MX-6 and 626 2.5L, Navajo, RX7 and 929).
- Verify optical sensor is working (Miata, Protege and 323).
- Check coolant temperature sensor resistance.
- Verify Hall-Effect sensor is working (MX-3, MX-6, 626 and 929).
- Check for leaky fuel injectors or pressure regulator causing warm-engine no start.
- Check fuel pump relay operation. A click should be heard from relay as ignition switch is cycled on and off.
- Check distributor pick-up coil resistance (if equipped).
- Ensure pressure regulator control system is okay.
- Check air intake system for restriction.
- Check EGR valve and solenoid for correct operation.
- Check for cracks and poor connections at airflow meter or throttle body.
- Check ignition coil resistance.