1. Ignition System: Check the spark plugs, wires, distributor cap, and rotor for wear, damage, or corrosion.
2. Throttle Body: Clean the throttle body and check the throttle position sensor.
3. Sensors: The crankshaft position sensor, camshaft position sensor, and oxygen sensors can all cause starting issues if they are faulty.
4. Starter: Check the starter motor and solenoid for proper function.
Troubleshooting Steps:
1. Check for fuel pressure. If there is no fuel pressure, check the fuel pump and fuel filter.
2. Check for spark. If there is no spark, check the ignition system components listed above.
3. Check the battery voltage. If the battery voltage is low, it may not have enough power to crank the engine.
4. Check all fuses and relays.
5. Check for any loose or disconnected vacuum lines that may be causing a vacuum leak.
If you're unable to diagnose the problem, we recommend taking your vehicle to a qualified mechanic for further diagnosis and repair.