Fuel System:
* Fuel Pump: The pump might be failing, delivering insufficient fuel pressure, or not working at all. Listen for the hum of the fuel pump when you turn the key to the "on" position (before cranking). A lack of hum suggests a faulty pump or related relay.
* Fuel Filter: A clogged fuel filter restricts fuel flow. This is a relatively cheap and easy part to replace.
* Fuel Injectors: Clogged or malfunctioning injectors prevent fuel from being sprayed into the cylinders.
* Fuel Pressure Regulator: This regulator controls fuel pressure within the system; a faulty one can lead to incorrect pressure and prevent starting.
* Empty Gas Tank: Obvious but worth checking!
Ignition System:
* Spark Plugs: Worn, fouled, or damaged spark plugs prevent ignition. Check for spark using a spark plug tester.
* Spark Plug Wires: Cracked, damaged, or poorly connected wires can interrupt the spark delivery. Inspect them for damage.
* Ignition Coil: This component boosts the voltage to create the spark; a faulty coil prevents sparking.
* Distributor (if applicable): Older systems sometimes use distributors. Issues within the distributor cap, rotor, or pickup coil can disrupt the spark delivery. (The '96 Breeze might have distributor ignition or a coil-on-plug system, depending on the engine)
* Crankshaft Position Sensor (CKP Sensor): This sensor tells the computer the position of the crankshaft, crucial for precise ignition timing. A bad CKP sensor prevents starting.
* Cam Position Sensor (CMP Sensor): Similar to the CKP, but for the camshaft.
* Ignition Control Module (ICM): This module controls the ignition system; a failure here can prevent starting.
Other Possibilities:
* Security System: If the car has an alarm or immobilizer system, it might be preventing starting. Check the lights and any indicators on the dashboard.
* Low Battery Voltage: While it cranks, a weak battery might not provide enough power to the ignition system or fuel pump. Test the battery voltage.
* Engine Sensors: A variety of sensors (MAF, MAP, etc.) provide crucial information to the engine control unit (ECU). Faulty readings from these sensors can prevent starting. A scan tool is necessary to check these.
* Timing Belt (or Chain): If the timing is significantly off (unlikely without other prior symptoms like knocking), the engine won't start. This requires more specialized tools and knowledge.
Troubleshooting Steps:
1. Check for fuel: Is the gas tank empty?
2. Listen for the fuel pump: Turn the key to the "on" position; can you hear the pump priming?
3. Check the spark: Use a spark tester on the spark plugs to see if you're getting spark.
4. Inspect the obvious: Look for any visible damage to wires, connectors, or components.
5. Check the battery voltage: Ensure it's within the normal range.
6. Obtain a scan tool: A scan tool can retrieve diagnostic trouble codes (DTCs) from the ECU, which can point to the problem. This is the most efficient way to troubleshoot.
If you're not comfortable working on cars, it's best to take it to a mechanic. Attempting repairs without proper knowledge can cause further damage.
