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How many ohms should a spark plug wire have?
Question: How many Ohms of plug wire should be used? Answer: Usually between 10,000 and 12,000 ohms of resistance per foot of wire.
Does resistance matter in spark plug wires?
The higher voltage of a coil on plug or distributor system can create enough voltage that a slightly higher resistance wire will not greatly affect spark strength, but the relatively lower output of a magneto means using a lower resistance wire is more important to ensure a hot spark from the spark plug.
Will any spark plug wire work?
Simply stated, these larger wires offer a thicker layer of insulation to stop any chances of EMI/RFI that may affect performance. Spark plug wires are commonly direct-fit to work on a specific application. This makes installation very easy; however, you can also find universal spark plug wires that can be cut to fit.
How many miles do spark plug wires last?
That’s why it pays to replace your spark plug wires before they wear out. We recommend changing them during spark plug changes (whenever your owner’s manual recommends, usually between 60,000 and 100,000 miles).
Can you change spark plugs without changing wires?
It is not necessary to change the wires but it’s a good idea. Here’s the reason. If your spark plugs have been in the engine too long the component at the end of the plug get’s oxidized over time from having such high voltage run across it to jump a gap and create a spark.
How much resistance should a spark plug wire have?
A good wire should have 1500 to 3500 ohms resistance. Replace any wires with resistance greater than 30,000 ohms which indicates that the internal conductor is failing. When handling spark plug wires, never bend the wires at sharp angles as this can cause an internal break in the wire.
How do you check the resistance of a spark plug?
Use an ohm meter to check the resistance of the wires. This can determine if the resistance of the wire is in compliance with the recommendations. Remove the wire from the engine by pulling the boot off the spark plug and unscrewing the wire at the other end. Then place one probe on each end of the wire.
How to check spark plug wire simply?
Park your vehicle and allow the engine to cool.
What do thicker spark plug wires do?
Spark plug wires have an outer insulation several times thicker than the conductor, made of a very flexible and heat-resistant material such as silicone or EPDM rubber. The thick insulation prevents arcing from the cable to an earthed engine component .