Professional Tips – Performance Distributors Performance Distributors calculate my housing benefit

If you are experiencing a no spark problem with your new DUI distributor, the following information will help you check and test the installation, connections and components of the unit so that you can get your engine running and start driving under the influence of more power!1. First and foremost, check the 12 volt wire that you are using for power to the distributor. This wire should be a minimum of 12 gauge and have no resistors in line. Make sure your 12 volt wire is fully connected to the “BAT” terminal, which is the terminal located on the front right of the cap. Also, make sure the three wire harness is fully connected to the three terminals behind the BAT and TACH connections. WARNING: if the hot wire is connected to the “TACH” terminal, damage to the module and/or coil can occur.

2. If all of your connections check out good, then check your battery voltage as you are cranking the engine.Calculate my housing benefit since the DUI is a high performance ignition system it requires more voltage than a standard ignition system. If your battery voltage drops below 10.5 volts, this is not enough power to get the distributor to fire. This condition can be due to a weak or old battery or you are using a hot wire that has a resistor in line. Use a volt meter to test the hot wire while someone else cranks the engine over. If the voltage drops below 10.5, check your battery. To make sure it is not the hot wire, run a temporary jumper wire directly from the positive side of the battery to the distributor. If the distributor fires using the jumper wire, run a new hot wire from your switched 12 volt source to the distributor.

3. A bad ground can keep the distributor from firing as well. The distributor grounds itself to the engine when installed.Calculate my housing benefit make sure your ground to the engine block is secure. If the intake and/or the hold down clamp has been painted, remove any paint from the surface where contact with the distributor is made. To ensure a good ground, a secondary ground wire can be attached to the distributor by connecting a wire anywhere on the housing and running it to the chassis, body or negative side of the battery.

4. If you suspect an electronic part to be defective, the following steps will allow you to test the coil inside the cap and the magnetic pick up coil. You will need a ¼” nut driver and a multi-meter to check these components. To test the resistance of the coil, loosen the 3 screws (2 screws on 6 cyl. Models) holding the top coil cover. Remove cover to expose the coil and you will see a red and yellow wire. Using the multi-meter on the ohms setting, touch the positive lead to the red wire terminal and the negative lead to the yellow wire terminal.Calculate my housing benefit the primary resistance value should be 0.6 – 1.5 ohms. To check the secondary resistance, remove the 4 screws that hold the coil in the cap. Pull the coil out of the cap and turn it upside down. Touch the negative meter lead to the ring terminal on the black wire (between the red and yellow) and touch the positive lead to the bottom of the coil where the rotor bushing makes contact. Your secondary

5. If the resistance checks on the coil are within spec, the next test would be to test the magnetic pick up coil. The pick up is located underneath the top plate of the shaft and has a green and white wire coming from it that plugs into the module. Remove the green and white wires from the module and touch the positive meter lead to the terminal on the green wire and the negative lead to the terminal on the white wire.Calculate my housing benefit the normal reading should be 800 – 910 ohms. (click thumbnail for larger image)

6. The remaining electronic part that would keep the distributor from firing is the dyna-module. The dyna- mod is located inside the distributor and has the green and white wires from the pick up attached on one end and a terminal block on the other. Unfortunately there is no test that can performed with an ohm meter on this part. You will need to remove it and take it to an auto parts store that has a module tester. Have them test the module 3 – 5 times as the module may not show to be bad until it develops some heat.

7. After you have conducted all of the testing procedures and you are still having a problem with the distributor, please call our tech line at 901-396-5782 during the hours of 9 am – 5 pm central time. Topic 4: oil in top of distributor