Nothing ruins a perfect day of driving like the smell of burning oil. For BMW E46 owners, this is a common problem, as the oil separator valve (OCV, or CCV) weakens over time and begins to let oil contaminate the air filter and engine bay. Luckily, it's possible to replace the OCV without breaking the bank or having to visit an expensive mechanic. Here’s how you can do it yourself in four easy steps.
The first step is to locate your CCV. It’s located just behind the driver’s side cylinder head, on the right side of the engine bay. Once you’ve identified the part, you can disconnect the hoses leading to it. This will allow you to remove the faulty valve.
The next step is to install the new valve. This process involves replacing all of the hoses that were connected to the old valve. Make sure that the hoses are properly tightened to avoid leaks. You should also check for other signs of damage or wear, such as cracks, to ensure the best performance from the new valve.
Once the valves are installed, you should test them to make sure that they’re working properly. Start the engine, then press the accelerator a few times to increase the engine speed. If the engine stalls, you may need to adjust the hoses or replace the valve again.
Finally, you should take some time to clean your engine bay. This is especially important if you’ve been experiencing oil leaks, as the oil can build up and create more problems in the long run. Make sure to use a degreasing cleaner to get rid of any dirt and grime, then apply a high-grade protectant to keep things looking nice.
Replacing the CCV in your BMW E46 can seem intimidating, but with the right tools and supplies, you can do it yourself in no time. Not only will you save money, but you’ll also gain confidence in your mechanical ability, which can be invaluable in an emergency. So grab your tools and get to work – your BMW will thank you!
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