What model of spark plug should be replaced for the Teana?

[LeFaith]

The Teana should be replaced with NGK platinum spark plugs. The replacement method is as follows: 1. Open the engine guard plate when the car is cold; 2. Remove the fixing screws of the ignition coil; 3. Use a wrench to take out the spark plug; 4. Apply silicone grease to the ceramic part of the new spark plug; 5. Place the spark plug in the sleeve and install it properly. The Teana is a mid-size car with a body size of 4901mm in length, 1850mm in width, and 1450mm in height, a wheelbase of 2825mm, and a fuel tank capacity of 61.3 liters. It is equipped with a 2.0L naturally aspirated engine with a maximum power of 115kW.

[DiMaximus]

For the Teana, it's best to use the OEM-recommended NGK ILZKAR7B11 or Denso SKJ20DR-M11 spark plugs. I've been driving this car for five years and last time I replaced them due to poor acceleration, only then did I learn that these models are iridium spark plugs designed for the 2.5L engine, with a long lifespan of about 80,000 kilometers per replacement. Worn-out spark plugs can lead to increased fuel consumption or idle shaking. Before attempting any work, it's advisable to check the owner's manual or consult a 4S shop, as using the wrong model may cause ignition failure or even trigger a fault light. If you're doing it yourself, use a torque wrench to tighten them to about 25N·m—over-tightening can damage the threads. Don't skimp by buying off-brand products; after switching to OEM parts, my car immediately ran smoother and accelerated more sharply. During regular maintenance, be careful not to let dust enter the cylinders. These small spark plugs affect the entire engine's performance, so they should be taken seriously.

[DiNaomi]

The commonly used spark plug for the Teana is the NGK ILZKAR7B11, mostly for the 2.5L engine, with a heat range of 6, suitable for city driving. As an owner who has changed it several times myself, all you need are a spark plug wrench and a torque wrench, costing just a few tens of yuan. First, verify the model with the engine number. The steps are simple: unplug the connector, unscrew the old plug, clean the hole, install the new spark plug, and tighten it to 25N·m. After replacement, ignition improves, and fuel consumption drops to around 8 liters. Spark plugs should be replaced every 80,000 kilometers; exceeding this can cause carbon buildup and lead to engine shaking. Consider the Denso alternative SKJ20DR-M11, which is about ten yuan cheaper with similar performance. Be careful during replacement—spark plugs are deep-set, and debris falling in can damage the engine. For first-time DIYers, watching a video tutorial is safer.

[DeAshley]

The standard spark plug for the Teana is the NGK ILZKAR7B11 iridium type, which offers excellent wear resistance and a long lifespan. This is commonly used during operation. When replacing, pay attention to the gap of 1.1mm and torque of 25N·m to avoid breaking it in the cylinder. The factory spark plugs must be replaced at 80,000 kilometers, as old ones can lead to weak ignition, increased fuel consumption, and misfires triggering fault codes. Do not use random models; stick to genuine NGK or Denso products for reliability, as off-brand plugs can cause carbon buildup and illuminate the engine light.