* Distributor Rotor and Cap: Even if the distributor itself is new, the rotor and cap might be faulty or improperly seated. Inspect them carefully for cracks, burns, or any other signs of damage. Ensure they're correctly installed and seated firmly. A misaligned rotor can cause poor or no spark.
* Incorrect Timing: The distributor's position dictates the ignition timing. If the distributor is even slightly off, the engine won't fire correctly. You'll need to verify the timing using a timing light, and possibly adjust the distributor's position until the timing mark aligns with the timing pointer on the harmonic balancer. This is crucial and requires mechanical aptitude and the correct tools. A mistimed distributor is a common reason for crank-no-start after a distributor replacement.
* Ignition Coil Wire Connections: Double-check all the connections from the coil to the distributor cap, ensuring they are secure and not corroded. A loose or faulty connection can interrupt the spark path.
* Wiring: While unlikely if the distributor was working before, there's a small chance you might have accidentally damaged or disconnected a wire during installation. Carefully trace all the wires related to the ignition system.
* Ignition Control Module (ICM): The ICM is part of the ignition system and often located near the distributor. A faulty ICM can prevent a spark even if the distributor is new.
* Pick-up Coil (Distributor Sensor): Inside the distributor, there's a pick-up coil (sometimes called a magnetic pickup) that senses the position of the crankshaft and triggers the spark. If this is faulty, you'll get no spark. This is less likely if you have a completely new distributor.
Troubleshooting Steps:
1. Visual Inspection: Thoroughly examine the distributor cap, rotor, and all wiring connections.
2. Check for Spark: Use a spark tester (or even a gap between two wires) at the spark plug wires to see if you're getting a spark. If not, the problem lies further upstream in the ignition system.
3. Verify Timing: Use a timing light to check the ignition timing. This is a critical step. If you don't know how to time a distributor, consult a repair manual for your specific vehicle.
4. Test the Ignition Coil: Test the coil using a multimeter to ensure it's functioning correctly.
5. Inspect the ICM (if applicable): The ICM is a common point of failure in these systems; test its operation.
If you're not comfortable working on your vehicle's ignition system, it's best to take it to a qualified mechanic. Incorrectly adjusting the timing or working with the ignition system can be dangerous. A mechanic has the tools and expertise to diagnose and fix the problem efficiently and safely.
