Quick Answer: Does Changing Spark Plug Wires Make A Difference?

Are spark plug wires interchangeable?

Wires are not interchangeable.

Every cylinder works in sync with a particular electrical connection on the distributor cap or ignition coil, depending on your car model.

That’s because spark plug wires aren’t actually made of wire.

That’s why it pays to replace your spark plug wires before they wear out..

Can you change spark plugs without changing the 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.

Can spark plug wires increase horsepower?

In short, yes, in some situations spark plugs can increase horsepower. … The theory behind spark plugs increasing horsepower is that by providing more spark to the firing tip of the spark plug, it will (and does) combust more fuel.

Is it bad to drive a misfiring car?

Strictly speaking it is not safe to drive your car if the engine is misfiring. If you notice the intermittent loss of power or poor acceleration, you should get to a mechanic as soon as possible. … The longer you drive with a misfiring engine the more likely it is that you’ll cause further damage to the engine.

What happens if you don’t change your spark plugs?

Spark plugs will deteriorate over time, so if they are not replaced, various engine issues will arise. When the spark plugs do not spark adequately, the combustion of the air/fuel mixture becomes incomplete leading to loss of engine power, and in the worst case scenario the engine will not run.

What does changing spark plugs and wires do?

Changing the spark plugs is a way of assuring top efficiency and performance. The misfires that may occur will increase exhaust emission as well as harm gas mileage. … Less voltage is required in the ignition system because of the efficiency of the new spark plugs.

What are the symptoms of bad spark plug wires?

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.

How many years do spark plug wires last?

Due to the constant use that the spark plug wires on a car gets, they will wear out over time and can cause a variety of different issues. The ignition cables on a car are made to last about 60,000 miles before they have to be replaced.

What happens if you mix up spark plug wires?

Bundling of spark plug wires and wrapping them with tape, pulling them through metal tubes or dressing them tightly against the engine, may make them look neat but can cause serious voltage losses and/or crossfiring. Changing the routing from the original OEM routing can lead to early spark plug wire failure.

What is the difference between 7mm and 8mm spark plug wires?

8mm spark plug wires are a heavier gage wire than the 7mm type. However, there is more to it than just the difference in the thickness. The thicker wire has a thicker core. … A more robust core provides a lower resistance path for the power, thereby allowing more power to reach the spark plugs.

What are the best spark plug wires?

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.

Why do spark plug wires have resistance?

The resistance of many wires is measured in ohms per foot. … Lower resistance means more of the ignition coils energy is going towards bridging the gap or the spark plug. That hotter spark can create a more even burn of the fuel/air mixture in the cylinder, and thus, more power output from the engine.

How often do spark plug wires need to be changed?

between 60,000 and 100,000 milesThat’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).

Will spark plug wires improve performance?

Benefits of Spark Plug Wires Stronger and more durable cables hold the spark until it finds its way to the spark plug to boost the performance of your vehicle. Improve gas mileage. Running on bad spark plugs or spark plug wires can end up using more fuel.