To test a distributor with a multimeter, you will need to disconnect the negative battery cable, remove the distributor cap, and unscrew the rotor. With the multimeter set to ohms, touch each terminal on the distributor cap in turn and note the reading. The resistance between the terminals should be infinite if the distributor is working properly.
If there is no resistance or a low resistance reading, then the distributor needs to be replaced.
- To test the distributor with a multimeter, set the multimeter to read ohms and attach the positive lead to the terminal on the distributor marked “1
- ” Touch the negative lead of the multimeter to each of the other terminals in turn, noting any change in resistance
- The resistance should be low between terminals “1” and “2,” higher between “1” and “3” or “4,” and highest of all between “1” and “5
- ” If there is no continuity between any two terminals, then the distributor is defective
How Do I Test My Distributor?
When it comes to testing your distributor, there are a few key things you’ll want to keep in mind. First, you’ll want to make sure that the distributor is getting power. Next, you’ll want to check the rotor for any cracks or damage.
Finally, you’ll want to test the ignition coil and module to ensure they are working properly.
How Can You Tell If Your Distributor is Bad?
If your distributor is bad, it can cause a variety of engine problems. The most common symptom of a bad distributor is an engine that stalls or runs rough. Other symptoms may include misfires, poor fuel economy, and a check engine light.
If you suspect your distributor is bad, have it inspected by a qualified mechanic as soon as possible.
How Do You Test a Distributor Coil With a Multimeter?
If you suspect that your distributor coil may be failing, you can test it with a multimeter to see if it is indeed the culprit. To do this, first disconnect the negative (-) lead from the coil. Then, using the Ohm setting on your multimeter, touch one lead to the positive (+) terminal on the coil and the other lead to the negative (-) terminal.
If the reading is infinity (∞), then the coil is bad and will need to be replaced.
How Do You Test a Distributor for Spark?
When testing a distributor for spark, you will need a few things: a spark plug tester, a 12-volt test light, and an ignition coil. First, remove the distributor cap and rotor. Next, attach the spark plug tester to the end of the spark plug wire where the spark plug would normally go.
Make sure that the ground clip is securely attached to metal on the engine. Now have someone turn over the engine while you watch the tester. If there is spark coming from the wire, then your distributor is fine.
If not, then you will need to check the ignition coil next.
To test the ignition coil, first disconnect it from the distributor. Then connect one lead of your 12-volt test light to one terminal on the coil and touch the other lead of your test light to ground.
Have someone turn over the engine again and see if your test light illuminates. If it does, then your ignition coil is fine and you likely have a problem with your distributor cap or rotor.
How to Bench Test a Distributor
If you’re troubleshooting ignition problems on an engine, one of the first things you’ll want to do is bench test the distributor. This will help you determine whether or not the distributor is creating the proper spark. Here’s how to bench test a distributor:
1) Remove the distributor from the engine and place it on a workbench. Make sure that the clamp that holds the distributor in place is securely fastened to the bench.
2) Connect a timing light to the number one spark plug wire and position it so that you can see the timing mark on the flywheel through the window in the distributor body.
3) Have someone turn on the ignition switch while you observe the timing mark through the window.
Conclusion
If you want to test your distributor with a multimeter, there are a few things you need to keep in mind. First, make sure the engine is off and the key is out of the ignition. Next, locate the two large terminals on the back of the distributor.
You’ll need to connect one lead of your multimeter to each of these terminals.
Now it’s time to turn on your multimeter and set it to ohms mode. With the leads still connected to the distributor terminals, you should see a reading on the screen.
If not, that means there’s a problem with the distributor and it needs to be replaced.
