06 Jul Why You Should Get Your Spark Plugs Checked at Fluid MotorUnion
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A spark plug may seem like a small part, but it can create major problems when it is not built correctly. At Fluid MotorUnion in Naperville, Illinois, a recent misfire diagnosis revealed just how dangerous counterfeit spark plugs can be.
A customer returned only a week after a spark plug replacement with a rough-running engine and an active misfire. The installation looked correct, the ignition coils checked out, and nothing immediately pointed to a larger issue. Eventually, the spark plugs were replaced with a genuine set sourced directly through Fluid MotorUnion.
The misfire disappeared instantly. The original plugs turned out to be counterfeit NGK spark plugs purchased online. They looked nearly identical to the real thing, but the differences inside the plug were enough to cause serious performance problems.
Why Spark Plugs Matter So Much
Spark plugs ignite the air and fuel mixture inside the combustion chamber. That process has to happen at exactly the right moment thousands of times every minute. When the spark is strong and consistent, the engine runs smoothly, makes proper power, and burns fuel efficiently.
When a spark plug begins to fail, the effects show up quickly. Drivers may notice rough idle, hesitation, poor fuel economy, or a check engine light. If the problem is ignored, unburned fuel can enter the exhaust system and potentially damage expensive components.
Modern engines are even less forgiving than older vehicles. Turbocharged and high-compression engines depend on precise ignition. A weak or incorrect spark plug can create misfires much faster than many drivers expect.
Why Counterfeit Spark Plugs Are a Growing Problem
Counterfeit spark plugs exist because premium plugs are expensive and easy to imitate. A set of NGK iridium spark plugs for a performance vehicle can cost more than $100, which gives counterfeiters an opportunity to sell fake plugs at a lower price.
The problem is that counterfeit NGK spark plugs often look almost identical to the real thing. The box, labels, and part numbers may all appear correct. In many cases, even experienced technicians cannot spot the difference until they compare the fake plug directly to a genuine one.
Inside the plug is where the real difference exists. Genuine NGK iridium plugs use a laser-welded iridium tip designed to withstand extreme heat and long service intervals. Counterfeit plugs often use a simple nickel tip that has been shaped to look similar. That cheaper material can fail very quickly.
How Fake Spark Plugs Fail
A genuine spark plug usually wears out slowly over time. The gap increases, the spark weakens, and the vehicle may gradually begin to run rough.
Counterfeit spark plugs often fail much more suddenly. The electrode can overheat, melt, or wear out after only a few thousand miles. Some fake plugs also have the wrong ceramic insulator length, causing the plug to run hotter than intended.
When that happens, the engine can experience more than just a misfire. Excess heat can create pre-ignition or detonation, both of which can damage pistons, cylinder walls, and other expensive engine components.
How to Spot a Fake NGK Spark Plug
Fake NGK plugs can be difficult to identify, but there are a few warning signs. Genuine plugs usually have a lot number stamped on the metal portion of the plug. Missing or poorly printed numbers can be a red flag.
The finish of the metal can also help. Genuine NGK iridium plugs often have a slightly purple tint, while counterfeit plugs may appear more yellow or gold. Some fake plugs also show rough machining marks around the ground strap or crimped areas.
The biggest clue is often where the plug came from. Spark plugs purchased through unknown online sellers or third-party marketplace listings carry a much greater risk of being counterfeit.
Why Fluid MotorUnion Recommends Trusted Parts Sources
At Fluid MotorUnion, parts quality matters just as much as the repair itself. A trusted supplier provides confidence that the parts being installed are genuine, backed by warranty support, and designed to work correctly.
That is why the shop recommends buying spark plugs through trusted retailers, authorized distributors, or directly through the shop. Stores like Napa, O’Reilly, and other established parts suppliers typically offer a much more reliable supply chain than unknown online sellers.
Saving a few dollars on cheaper spark plugs is not worth the risk of misfires, wasted diagnostic time, or major engine damage. If your vehicle is running rough or showing a misfire, Fluid MotorUnion in Naperville, Illinois can diagnose the issue and make sure the correct parts are installed.
Ready to solve your ignition problem the right way? Contact Fluid MotorUnion, stop by the shop in Naperville, or watch the full video to learn more about how counterfeit spark plugs can create real engine damage.
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To book an appointment or find out more information, hit up our website or email/call:
– www.fluidmotorunion.com
– (630) 305 3054
– [email protected]
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