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Jeep CJ7 Air Filter Heat Shield

Common Issues with the Jeep Cj7 Air Filter Heat Shield

Without a Jeep Cj7 air filter heat shield, your vehicle's engine may choke, resulting in reduced engine performance. Basically, air filters are designed to help your Jeep's engine to breathe more easily by filtering small particles of dirt-preventing them from entering the system. An air filter heat shield on the other hand, helps divert hot air away from the air filter letting dense and cool air get sucked through the filter. If the air filter's heat shield fails, hot air will enter your engine, which decreases its overall power output. Here are some of the most common air filter heat shield issues encountered by Jeep Cj7 owners, and the factors behind them:

Signs of smoke

When you notice black smoke from your Jeep's tailpipe or under the hood, it could be from a dirty air filter. Dirty air filters are caused by oil contamination or a faulty heat shield. Holes or cracks on your air filter heat shield can allow oil and dirt particles from the engine clog the air filter's filtration system. Let your engine cool down before inspecting the air filter heat shield. Check the heat shield for the telltale signs of damage like cracks or holes. Replace the damaged heat shield and dirty air filter to avoid engine problems.

Engine choking

If you are experiencing hard starting or engine chokes, you might assume that your air filter is clogged or dirty. Yes, a dirty air filter is usually the cause of these problems, but what if the root cause of the issue is the heat shield? A faulty or damaged air filter head shield allows heat from the engine bay to enter the air filter, resulting to engine chokes and an increase in fuel consumption. It's better to remove the air filter heat shield and replace it with a brand new one.

Rattling noises

Air filter heat shields are usually secured by screws or bolts. Due to engine vibrations and varying road conditions, these heat shields may come loose and start to rattle inside the engine bay. Stop your car, and let the engine cool. Tighten loose bolts and screws to secure the heat shield to the air filter's tube.

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  • Tips on How to Maintain Your Jeep Cj7 Air Filter Heat Shield 27 February 2013

    Made from high-quality heat-absorbing materials, your Jeep Cj7 air filter heat shield helps prevent heat from reaching the air filter. Your Jeep's engine needs the proper air and fuel mixture to oxidize fuel efficiently. With cooler air now entering your engine, it can now produce the horsepower you need. The amount of air temperature your air filter takes in dictates your engine's overall performance. Since air filter heat shields can dramatically boost your Jeep's engine output, these parts need to be maintained properly at all times. Maintaining your air filter heat shield is not that difficult, and here are some tips to help you keep it in good condition:


    Keep it clean and tidy.


    It's a general rule when performing basic car maintenance: keep everything neat and tidy. Most car parts need to be cleaned from time to time, and your air filter heat shield is no exception. When cleaning your Jeep's air filter, remove the heat shield, and clean it too. Most air filter heat shields are made from aluminum, fiberglass, or carbon composite materials. A good car shampoo and sponge will do the trick; just make sure to clean it thoroughly.


    Always check and inspect.


    While cleaning your air filter heat shield, making sure it's spick and span, better check it for any scratches, dents, holes, or even signs of corrosion. Scratches and small holes can be fixed by applying small amounts of epoxy filler as well as by repainting the heat shield with heat-resistant enamel paint. Dents can be pounded into place with a hammer and rubber mallet. If you discover signs of corrosion, it's better to buy a new air filter heat shield. Rust can contaminate your Jeep's air filter and affect its efficiency. There is a wide variety of compatible air filter heat shields available in the market today.


    Fasten and secure it properly.


    After performing routine maintenance on your air filter heat shield, make sure that the air filter heat shield is properly secured. Inspect the screws and bolts' threads before apply torque on them. Check the washers or rubber seals for cracks or signs of wear. Replace corroded bolts, worn-out washers, and rubber seals. Remember to apply the right amount of torque when securing the air filter head shield.