Spark Plugs:
Double-check the condition and gap of the spark plugs. Make sure they are correctly gapped according to the manufacturer's specifications. Faulty or improperly gapped spark plugs can prevent a proper spark.
Distributor Cap and Rotor:
Verify the condition of the distributor cap and rotor. Look for any cracks, corrosion, or damage. Replace them if necessary.
Distributor Installation:
Ensure that the distributor is correctly aligned and installed. If it's not properly seated or timed, it can disrupt the ignition process.
Ignition Coil:
Test the ignition coil with an appropriate multimeter to see if it's providing power to the distributor. A faulty coil can prevent the necessary voltage from reaching the spark plugs.
Wiring Connections:
Inspect the electrical connections related to the ignition system. Ensure that the wiring is correctly connected and there are no loose or broken wires. Check for any corrosion or damage as well.
Grounding:
Verify the ground connections for the ignition system, including the engine block and chassis. A poor ground connection can affect the spark production.
Computer Module:
On some vehicles, the ignition system is controlled by a computer module. If your Isuzu Amigo has this feature, check the module to ensure it is functioning correctly.
Fuel Delivery:
Although you mentioned no spark, it's important to note that proper fuel delivery is crucial for the engine to run. Check the fuel pump and fuel pressure to make sure the engine is receiving fuel.
If you have gone through these steps and still haven't found the cause, you may want to consider consulting a professional mechanic or auto electrician. They can diagnose the issue more accurately and efficiently using diagnostic tools and equipment.
