What is the proper resistance for spark plug wires?
What is the proper resistance for spark plug wires?
The Society of Automotive Engineers suggests the maximum resistance should be 12,000 ohms-per-foot.
How to test the resistance of a spark plug?
Tools 1 Spark Plug Wire Puller (For older vehicles without coil packs) 2 Multimeter (for resistance test) 3 Spark Plug Socket 4 Sockets (for cars with coil packs)
Do you need the wrong number of spark plug wires?
Since most spark plug wires are sold as a set and specifically for your vehicle, you’ll likely not have to worry about getting the wrong number of wires. Still, it doesn’t hurt to make sure …
What kind of spark plugs do you need?
Some modern vehicles have distributorless ignition systems, which have the spark plug wires connecting each coil pack directly to one or more spark plugs, whereas others are of a coil-on-plug design that removes the need for wires entirely (but that’s another story).
How do you make a spark plug wire?
Make the actual wraps on your spark plug wire. Include a resistor between the wrap and the two diodes. Hook your scope to the center of the two diodes and see what you get. Fiddle for something that will work. You’ll need a couple of different resistors. 1 Meg to start then work your way down. The diodes are both pointing at 5V in series.
What’s the best way to test a spark plug?
Use the digital multimeter, set to Ohms. Tip: When testing the wire, you must make sure that the tester leads are touching the metal contacts inside both ends of the spark plug wire.
How can you tell if a spark plug wire is bad?
In addition, the engine light coming on or visible damange to the cables can be signs of a failing wire. Be sure to first check spark plug wires for visual damage. Look for any signs of melting or cracking. The following situations call for immediate replacement of spark plug wires:
How do you connect a spark plug to a coil?
Step 9: Place the spark plug wire firmly into the same wire clips and lock them in place. Step 10: Push the spark plug wire onto the spark plug until you feel it snap into place. Step 11: Push the spark plug wire onto the coil or distributor cap. Again, you should feel it snap into place.
Do you need an ohmmeter for spark plugs?
You’ll need an ohmmeter for this, and you’ll need to know what the wires’ original resistance was. Test each wire and look for resistance levels higher than when originally installed, as well as higher resistance in individual wires (which indicates a failed wire).
