Anaya Nolan
The use of catch cans in California has been a topic of debate among car enthusiasts due to the state's strict emissions regulations. While some argue that catch cans improve emissions by reducing the amount of oil burned, others express concern about potential legal repercussions. California's Air Resources Board (CARB) regulations require certain modifications to be CARB-certified, and the interpretation of these rules by inspectors can vary. Some car owners have reported passing visual inspections with catch cans installed, while others have been cautious about potential failures during inspections. The legality of catch cans in California remains a grey area, with conflicting information from authorities and retailers.
| Characteristics | Values |
|---|---|
| CARB EO number required | Not required for catch cans, but some manufacturers have started creating kits that have them |
| CARB sticker required | Yes |
| CARB-approved catch can system available | No |
| Visual inspection | May pass or fail depending on the inspector's knowledge and the setup of the catch can |
| Emission test | May pass or fail depending on the inspector's knowledge and the setup of the catch can |
| Oil Separator/Filter - Crankcase Gas Filter EO required | No |
| Retailer's willingness to sell | Some retailers refuse to sell catch cans |
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What You'll Learn
Catch cans are not CARB-approved
In California, catch cans are not CARB-approved. California's Air Resources Board (CARB) is responsible for regulating vehicle emissions in the state, and catch cans are not on the list of approved emission control devices. While some people argue that catch cans can improve emissions, they are not recognised as such by CARB.
The use of catch cans on vehicles in California is a grey area. While some people claim that they have passed visual inspections with catch cans installed, others have stated that they were failed for having them. The reason for this discrepancy is likely due to the fact that catch cans are not widely known or understood by inspectors. As one source points out, most inspection people don't know what they are looking for, so it is possible to get away with having a catch can installed.
However, according to some sources, there is a chart that inspectors use to determine if an EO (Executive Order) is required for a particular modification. This chart, found in Appendix C of the Smog Check Manual on the bar.ca.gov website, states that oil separators/filters (also known as crankcase gas filters) do not require an EO number from CARB to be legal and pass smog tests. Despite this, some retailers still refuse to sell catch cans in California, claiming that they are not legal for use in the state.
It is important to note that while catch cans may not be CARB-approved, they are also not explicitly illegal in California. As one source points out, catch cans are not performance parts, but rather parts that help the car survive. Additionally, some people argue that catch cans do not alter the basic operation of the factory system, but simply catch unspent fuel from being burnt. However, others disagree, stating that catch cans do tamper with the way the PCV (positive crankcase ventilation) system functions.
Overall, the lack of CARB approval for catch cans in California creates a confusing situation for vehicle owners. While some people have successfully used catch cans in the state, others have chosen to remove them out of concern for failing emissions inspections. The risk of being penalised by an inspector who is unfamiliar with catch cans or who interprets the regulations differently is a deterrent for many vehicle owners.
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Catch cans can improve emissions
Catch cans, also known as oil separators, are devices installed between the engine and the air intake system. They are designed to collect oil vapours and droplets before they enter the engine, keeping the engine clean and free of deposits. While some people choose to install catch cans as an aftermarket upgrade, they are not a standard feature on most vehicles due to pollution laws and emissions regulations.
In terms of emissions, catch cans can play a role in reducing hydrocarbon emissions from vehicles. Oil blow-by, where oil escapes past the piston rings into the crankcase, can increase hydrocarbon emissions. Catch cans help to capture this oil before it escapes, reducing the vehicle's environmental impact.
While catch cans can have benefits, there are also considerations to keep in mind. Some sources suggest that catch cans may not significantly impact emissions or engine performance. Additionally, in certain jurisdictions, such as California, there may be legal considerations regarding the use of catch cans. While some argue that catch cans do not require a CARB EO number and can improve emissions, others suggest that modifications to the vehicle's emissions system may raise legal concerns. Therefore, it is important to research the regulations in your specific location before installing a catch can.
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Catch cans are not a replacement system
While catch cans are not illegal in California, they are not a replacement system. Catch cans are aftermarket parts that are used to capture unspent fuel and oil vapour before they enter the combustion chamber. They are not a replacement for the factory system as they do not alter the basic operation of the system.
Modern engines are designed to recycle exhaust gas and have a Positive Crankcase Ventilation (PCV) system that pumps poisonous crankcase vapours into the engine to be burned and converted into less harmful chemicals. The PCV system includes an oil separator designed to catch oil before it is drawn into the engine and return it to the sump. When these systems work properly, there is no need for a catch can.
Additionally, catch cans can cause problems if not properly designed or maintained. They can restrict the engine's PCV system and cause worse problems than having a small amount of oil in the intake. Catch cans are most effective on forced induction engines, and their usefulness depends on the specific application.
Furthermore, modifying the engine with a catch can can void the warranty. In the event of engine failure, the manufacturer may deny a warranty or consumer law claim, arguing that the aftermarket part caused the failure. Therefore, while catch cans may be legally used in California, they are not a replacement for the factory system and should be used with caution.
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Catch cans are not performance parts
In California, catch cans are considered to be in a legal grey area. While some people believe that they are illegal, others argue that they are not performance parts but rather components that help the car survive. According to some sources, catch cans do not require an EO (Executive Order) number from CARB (California Air Resources Board) to be legal and pass smog tests. However, there is a concern that during inspections, the non-enthusiast may give a hard time simply because "it's not stock".
Catch cans are devices that collect oil vapors from the crankcase, preventing them from being burned in the combustion cycle. While some people believe that they improve emissions by reducing the amount of oil burned, others argue that the collected substances are meant to be burned off and not trapped. The PCV (Positive Crankcase Ventilation) system, which is part of the emissions system, can be affected by catch cans, as they can tamper with its function.
Some people choose to temporarily remove the catch can before emission tests to avoid potential issues. There is also a concern about the proper disposal of the captured oil, which may require specific documentation during inspections. Overall, while catch cans may not be considered performance parts, their impact on the emissions system and the potential for them to be noticed during inspections can be a cause for concern for some car owners in California.
To ensure compliance with local laws and regulations, it is essential to refer to official sources and seek guidance from relevant authorities.
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Catch cans may require CARB certification
California's strict emissions laws have long been a headache for car enthusiasts, with some suggesting that the state's regulations go as far as to increase the price of vehicles. While the state does not require a CARB EO number for catch cans, some manufacturers have started creating kits that have them. This has led to confusion, with some retailers refusing to sell catch cans under the belief that they are illegal in California.
However, according to the Smog Check Manual on the bar.ca.gov website, oil separators/filters and crankcase gas filters do not require an EO number from CARB to be legal and pass smog tests. This has been confirmed by several users who have passed visual inspections with catch cans installed. Some suggest that inspectors are often unfamiliar with what they are looking for and are unlikely to notice a catch can unless it is vented to the atmosphere.
Despite this, there is a risk that a catch can could be flagged during an inspection, particularly if it is not a closed-loop system. In this case, having CARB certification for the catch can may allow it to pass inspection. While some suggest that catch cans improve emissions by reducing the amount of oil burned, others argue that the collected contaminants are meant to be burned off, not trapped and collected.
Overall, while catch cans may not require CARB certification in California, it is a grey area, and there is a risk that they could be flagged during an inspection. Those choosing to install catch cans do so at their own risk and should be prepared to remove them if necessary to pass inspections.
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Frequently asked questions
Catch cans may violate carb laws because they collect the nasty stuff meant to be burned off in the combustion cycle, tampering with the way PCV functions.
Yes, if the inspector knows what they are looking at, you would need to remove it or cough up a CARB certification.
If an officer doesn't understand what you have done or thinks you are trouble, they may give you a ref ticket and take you off the road.
You can get a black one with black braided hoses to make it look factory. You can also hide it by running the lines behind the charge pipe down to behind the passenger fog lamp.
