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.
Do you have to change the wires when changing spark plugs?
If your vehicle has spark plug wires, most owner’s manuals recommend that the wires be replaced at the same time as the spark plugs, so you’ll probably want to have both new plugs (the correct ones for your vehicle) and new wires on hand before you start the job.
Should I change my ignition leads?
Over time leads can see a lot of heat, current and rubbing against engine components which can all lead to wear, resulting in arcing, voltage leaking and ignition system failures. It’s important to replace your ignition leads at the sign of any wear or after around 100,000kms.
How often should you change spark plugs and leads?
about every 30,000 to 90,000 miles
Spark plugs are somewhat durable components and don’t need to be replaced too often, that said, the general recommendation is about every 30,000 to 90,000 miles. Each vehicle may differ on when they should be replaced.
How long do spark plug wires last for?
around 60,000 to 70,000 miles
A quality set of spark plug wires can generally last around 60,000 to 70,000 miles. Again, it is a good idea to replace these parts prior to a failure, like a misfire. A vehicle that is running rough or misfiring can cause catalytic converter damage.
How do I know if my spark plug wires are bad?
Common signs of failing spark plug wires include a decrease in power, acceleration, and fuel efficiency. In addition, the engine light coming on or visible damange to the cables can be signs of a failing wire.
What are the symptoms of a bad spark plug?
What are the signs your Spark Plugs are failing?
- Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle. …
- Trouble starting. Car won’t start and you’re late for work… Flat battery? …
- Engine misfiring. …
- Engine surging. …
- High fuel consumption. …
- Lack of acceleration.
What are the best ignition leads?
- Editor’s Pick: ACDelco. ACDelco offers a variety of spark plug wire sets for a wide range of applications and vehicles. …
- NGK. …
- MSD. …
- JEGS. …
- Denso. …
- Bosch. …
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