That being said, here's a general overview of how to test them:
Tools You'll Need:
* Dwell meter: This is the most accurate way to test the points. It measures the time the points are closed.
* Ohmmeter (multimeter): To test the condenser.
* Wrench/socket: To access the distributor cap and rotor.
* Screwdriver: (Probably a Phillips head) For removing the distributor cap and potentially adjusting the points.
* Spark tester: (Optional, but helpful to confirm spark after testing)
Testing the Points:
1. Safety First: Disconnect the negative (-) battery cable before beginning any work on the ignition system.
2. Access the Distributor: Locate the distributor on your engine. It's usually a cylindrical component with a cap on top.
3. Remove the Distributor Cap and Rotor: Carefully remove the distributor cap and rotor. Note the rotor's position relative to the distributor body.
4. Visual Inspection: Inspect the points for signs of wear, pitting, or burning. They should be clean and make good contact.
5. Dwell Meter Test (Most Accurate): Connect the dwell meter according to the manufacturer's instructions. The dwell meter will give you a reading in degrees. Compare this reading to the specifications in your Ford truck's repair manual. If the dwell is outside the specified range, the points may need adjustment or replacement.
6. Ohmmeter Test (Less Accurate, but possible): An ohmmeter can give a rough idea of point condition. Connect the ohmmeter probes across the points. They should show a very low resistance (close to zero ohms) when closed. A high resistance indicates poor contact. This method is less reliable than a dwell meter.
7. Point Gap Adjustment (If Necessary): If the dwell is off or the resistance is high, you may need to adjust the point gap. This usually involves loosening a small screw and carefully adjusting a small gap between the points using a feeler gauge to the specifications in your repair manual. This is delicate work and requires precision.
Testing the Condenser:
1. Locate the Condenser: The condenser is usually mounted directly to the distributor, often near the points. It's a small, cylindrical component.
2. Ohmmeter Test: Use your ohmmeter to test the condenser. Disconnect the condenser wire. Set your ohmmeter to a low ohms setting. Connect the ohmmeter leads to the condenser terminals. You should see a low resistance initially (a few ohms), but it will slowly increase. If the resistance stays low or shows an open circuit, the condenser is likely bad and needs replacement. Consult your repair manual for specific resistance values.
Important Considerations:
* Repair Manual: Always consult your Ford truck's repair manual for specific procedures and specifications. The procedures and values may vary depending on the year, model, and engine.
* Replacement: If the points or condenser are worn or faulty, they need to be replaced. It's generally recommended to replace both at the same time.
* Distributor Timing: Adjusting the points may affect the distributor timing. If you adjust the points, you may need to have the ignition timing checked and adjusted by a professional.
Again, if you are not comfortable performing these tests and repairs, it's best to take your truck to a qualified mechanic. Working on the ignition system can be dangerous if not done correctly.
