Honda CR-V: The Clean Air Act
Honda CR-V (2006–2011) Owner's Manual / Technical Information / Emissions Controls / The Clean Air Act
The United States Clean Air Act* sets standards for automobile emissions. It also requires that automobile manufacturers explain to owners how their emissions controls work and what to do to maintain them. This section summarizes how the emissions controls work.
* In Canada, Honda vehicles comply with the Canadian emission requirements, as specified in an agreement with Environment Canada, at the time they are manufactured.
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Crankcase Emissions Control System
Your vehicle has a positive
crankcase ventilation system. This
keeps gasses that build up in the
engine’s crankcase from going into
the atmosphere. The positive
crankcase ventilation valve
Evaporative Emissions Control System
As gasoline evaporates in the fuel
tank, an evaporative emissions
control canister filled with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is off. After
the en
Onboard Refueling Vapor Recovery
The onboard refueling vapor
recovery (ORVR) system captures
the fuel vapors during refueling. The
vapors are adsorbed in a canister
filled with activated carbon. While
driving, the fuel vapo
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Floor Mats
The floor mats that came with your
vehicle hook over the floor mat
anchors. This keeps the floor mats
from sliding forward, possibly
interfering with the pedals, or
backwards, making the front
passenger’s weight sensors
ineffective.
If you remove a floor mat, make sure
to re-anc
Piston Ring Replacement
1. Remove the piston from the engine block.
2. Using a ring expander (A), remove the old piston
rings (B).
3. Clean all ring grooves thoroughly with a squared-off
broken ring or ring groove cleaner with a blade
to fit the piston grooves.
The top and 2nd ring grooves are 1.2 mm (0.05 in.)
wide. Th
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