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Top 5 Reasons Your Check Engine Light Is On - and How the Purge Valve Is Involved

If you've been a victim of that unwelcome check engine light flash on when you were driving, you're not all on your own. It's among the most annoying and vague warnings your car will give you. Sometimes, it's a serious issue, and there are times when it's simply loose gas capsand in most instances, it's related to the emissions system.

Here are 5 reasons why your check engine warning light could be onand why one of the most overlooked component that is often overlooked, purge valve, filter could play a significant role:

1. Loose or Faulty Gas Cap

Simple, but very typical. A cracked or loose gas cap can trigger the pressure to leak into your fuel system, and trigger the flashing light. Make sure to check it before going into the deeper.

2. Oxygen Sensor Failure

The O2 sensor is a device that monitors the amount of oxygen left from the exhaust. If it's not working properly your car isn't balancing both fuel and air correctly. This can affect performance and emissions.

3. Catalytic Converter Issues

When your converter for catalytics has begun to fail The check engine indicator will alert you. It usually indicates unsteady idling, poor performance, or the "rotten egg" smell.

4. Mass Air Flow (MAF) Sensor Problems

This sensor monitors how much air is flowing to the combustion engine. If it's dirty or has a problem it can throw off the whole ratio of fuel to air and could result in the lights to turn on.

5. EVAP System Leak -- Often the Purge Valve

A less apparent but often occurring reasons is one of the more obscure causes is EVA (Evaporative Emission Control) system that prevents gas vapors that escape into the air. One of the most crucial components in this process includes that of the the purge valve. If it fails or becomes stuck, it could generate trouble codes such as P0441, P0446, and P0455.

If you're not sure the purge valve's function or how to tell if it's malfunctioning and you're not sure how to tell, this thorough guide explains what a purge valve does and what signs indicate malfunction, as well as what you should do if it's a cause for your check engine light.

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H6 Battery for Your Car in 2025?

When it's time for a replacement of your battery for your car it's important to consider size. The H6 battery (also called the Group 48) is among the most frequently used and reliable options available in modern automobiles. It is found in the most popular models of BMW, Audi, Ford and Jeep the H6 achieves an ideal balance between small dimensions and a strong performance.

However, is the H6 the right choice for you?

The H6 battery usually measures 12.06 by 6.88 7.8 7.5 inches. It is able to deliver 600-800 cold cranking amps. This provides strong starting power in the coldest of conditions. It also has sufficient reserve capacity to support modern technology as well as Start-Stop system.

You may also be thinking what it's like compared to its closest rival that is The H7 battery. While the H7 battery has greater capacity, it's also larger and could not be able to fit into all cars. If you're unsure which one suits your needs, check out this helpful comparison: https://www.blikai.com/blog/battery/h6-vs-h7-battery-which-one-to-pick-2024-updated

Why should you choose the H6?

OEM in many automobiles

Affordable and readily available

Works with AGM and standard technology.

Great for daily drivers and in colder climates.

If your vehicle is equipped with an H6 battery, or if you're seeking an efficient battery with tested performance, this is a solid alternative in 2024.

Check out this full guide to choosing between H6 and H7 batteries - https://www.blikai.com/blog/battery/h6-vs-h7-battery-which-one-to-pick-2024-updated

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