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Yes, but not automatically. The Clean Air Act generally bars states from setting their own emissions standards for new motor vehicles, while giving California a conditional route to seek an EPA waiver. EPA says three named California vehicle rules were disapproved by congressional resolutions enacted in June 2025. That does not mean every California emissions rule or waiver ended, and EPA’s later transmittals of additional rules to Congress are not themselves disapprovals.
How can California set vehicle pollution standards?
Section 209(a) of the Clean Air Act generally preempts states from adopting emissions standards for new motor vehicles. Section 209(b) provides California with a waiver process: the state asks EPA to exempt its standards from that preemption.
EPA says it must grant a waiver unless the Administrator finds at least one of three things: California’s determination that its standards are, in the aggregate, at least as protective as applicable federal standards was arbitrary and capricious; California does not need the standards to meet compelling and extraordinary conditions; or the standards and their enforcement procedures are inconsistent with section 202(a) of the Act.
The process includes an EPA notice in the Federal Register, an opportunity for a public hearing and written comments, EPA’s review of those comments, and a decision. California may not enforce the covered rules until EPA grants the waiver. The waiver is therefore a specific statutory process, not an unrestricted state power to override federal standards.
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- Universal Low-Pressure Compatibility: Works seamlessly with any low-pressure automotive smoke machine (including models like 96-0190) for safe, effective EVAP diagnostics across all vehicle makes and models.
- Plug-and-Play Leak Location: Quickly connect the included T-shaped adapters to accessible EVAP lines and your smoke machine for instantaneous visual identification of leaks.
- Professional-Grade Precision: Engineered for technicians, this kit delivers reliable, accurate results essential for efficient diagnosis and proper repair of EVAP systems.
- Comprehensive Adapter Toolkit: Features a complete set of precision adapters and hoses (7.89mm to 12.6mm) ensuring perfect, airtight seals on every vehicle EVAP port.
- Diagnostic Efficiency: Dramatically reduces diagnostic time by enabling rapid smoke system integration, leading to faster repairs and increased shop throughput.
What happened to the three California vehicle rules in 2025?
EPA announced on February 14, 2025, that it planned to transmit three California waiver rules to Congress. EPA later reported that congressional resolutions disapproving those rules were signed into law in June 2025.
| Rule | What EPA reported |
|---|---|
| Advanced Clean Cars II | Included among the three waiver rules EPA said Congress disapproved in resolutions enacted in June 2025. |
| Advanced Clean Trucks | Included among the three waiver rules EPA said Congress disapproved in resolutions enacted in June 2025. |
| Heavy-Duty Engine Omnibus NOx | Included among the three waiver rules EPA said Congress disapproved in resolutions enacted in June 2025. |
This account describes EPA’s statements about those resolutions and the rules they named. It should not be broadened into a claim that Congress ended all California emissions standards or all California waivers.
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- FUEL PUMP - This pressure gauge set can be used to test fuel pump pressure, emission control devices, leaky, stuck open or burnt valves. Clogged muffler, turbo or exhaust system. Helps to locate leaks in the gas line, valve timing, worn out rings and seals, heating and air conditioning components.
- CAR VACUUM TESTER - Also can be used for testing engine vacuum lines, brake assist system, carburetor and intake manifold for leaks, vacuum or pressure loss. Set includes a variety of adapters suitable for most vehicles; Intended for carburetor engines with a mechanical fuel pump operating pressures below 10 PSI (0.7 Bar).
- PRESSURE GAUGE - The gauge has 4 inches diameter large scale, color-coded measurement, rubber surrounded protective and a hook on the top. so it’s easy to read and use. Range of vacuum dials is 0-28in/Hg Vac, 0-70cm/Hg; Range of pressures dials is 0-10 psi/g, 0-0.7 kg/cm2.
- HOSE AND ACCESSORIES - The kit comes with a 2ft/61cm rubber hose (13/64-inch ID and 23/64-inch OD). The max working pressure is 40PSI. Other accessories include (1)conical adapter, (1)plastic connector, (1) 1/4”x18 male to 1/8”-27 female adapter, (1)1/8”-27 male to 7/32”barbed fitting adapter, (1)1/8”-27 female to 3/8”male adapter, (1)T-type 7/32”barded fitting adapter.
- EASY STORAGE - Heavy-duty 11”x 5.7”x 2.4”inch (28cm x 14.5cm x 6cm) plastic blow-molded carrying case for easy transportation, safe storage, and quick organization.
Did EPA’s 2026 transmittals repeal more rules?
No. EPA’s July 22, 2026 announcement said the agency had transmitted four additional California waiver rules to Congress in June, concerning cars, trucks, lawn mowers, and other equipment. On July 22, EPA transmitted two more rules related to marine vessels and ports. A transmittal is a step in the congressional review process; the announcement alone does not establish that Congress disapproved those additional rules.
EPA Administrator Lee Zeldin characterized the transmittals as required by law. That is EPA’s position, not a judicial ruling.
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- Troubleshoot Turbo Leak with Ease: Orion Motor Tech's turbo pressure tester kit simplifies the process of checking and identifying leaks in the turbocharger, cooling, and emissions systems of various cars and light trucks
- 6 Pairs of Stepped Adapters: Each stepped adapter provides a secure fit for hoses of various sizes, with outer diameters of 1.2", 1.4"; 1.8", 2"; 2.2", 2.3"; 2.6", 2.7"; 3", 3.1"; and 3.3", 3.5"
- Comprehensive Set: Equipped with 6 test adapters, 6 blanking adapters, a smoke adapter, a 0-70 psi pressure gauge assembly, a DIN adapter, and a pair of gloves, this turbo system pressure leakage tester kit provides all the essentials for thorough testing
- Easy Operation: Simply attach the adapter, connect the pressure gauge to your workshop airline, pressurize the system, and listen for any indications of a leak. Connect the smoke adapter to your smoke generator to easily detect leaks with visible smoke
- Rugged Durability & Easy Storage: Crafted from premium nylon and metal material, these turbo system leakage testers ensure long-term wear resistance. The included blow-molded case makes transport and organization easier than ever
Are California’s vehicle emissions rules still in effect?
There is no reliable blanket yes-or-no answer based on the actions described here. EPA says three named rules were disapproved in 2025, while its 2026 announcements concern further transmittals, not established congressional disapprovals. The status and enforceability of a particular rule can depend on the rule, the relevant model years, the jurisdiction, and subsequent legal or regulatory action.
EPA’s waiver overview says there are currently no waiver or authorization requests pending EPA action. That means no such requests are awaiting an EPA decision according to the overview; it does not decide the status of existing rules or litigation.
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- NEW BUILT-IN AIR MOTOR: No need for a separate air supply!
- HIGH PERFORMANCE, PREMIUM BUILD: Made in the USA. Solid Thick Metal Construction for durability. Equipped with our brand new AutoLine Pro Ceramic Smoke Coil and Top Rated Smoke Fluid that outputs LOTS OF SMOKE and last a Lifetime.
- PRECISE AND SAFE: Engineered to be 100% safe for all vehicles. Thick smoke output detects even the smallest leaks. A perfect complement to tools such as Fuel Pressure Testers when diagnosing EVAP and fuel-related systems.
- SIMPLE TO USE: (1) Fill with the included OEM Approved or Any Smoke Fluid. (2) Turn on the Built-In Air Motor. (3) Start smoke diagnostics!
- OEM APPROVED SMOKE FLUID INCLUDED: Safe for all systems and sensors. 800 Min Premium High-Smoke output formula. We’ve included plenty of fluid so you can focus on what’s important. ( Other brand's smoke machine just comes with EMPTY bottle)
Can other states follow California’s vehicle rules?
California’s section 209(b) waiver is not a general waiver pathway available to every state. The EPA material distinguishes California’s motor-vehicle waiver from other states’ possible adoption of California nonroad standards under section 209(e)(2)(B). Nonroad equipment follows a separate authorization framework, so it should not be treated as the same process as a California car or truck waiver.
What remains uncertain about court challenges?
The EPA announcements establish the agency’s account of the 2025 congressional resolutions and its later transmittals. They do not, by themselves, establish the final status of court challenges to the 2025 action. A court filing has surfaced, but its procedural posture, later docket activity, and any final ruling are not verified here. Do not treat EPA’s view or a congressional action as equivalent to a final judicial resolution.
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