Mazda RX4 Fuel cap replacement
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Mazda RX4 Fuel cap replacement
Mazda RX4 fuel cap replacement
The fuel cap (fuel filler cap) has a very important part to play in the operation of a Mazda RX4. Since the 1970s, vehicle manufacturers started to reduce passenger vehicle emissions. One element of achieving this was to reduce the fuel vapour being released from car fuel tanks. Vehicles were fitted with emission control system monitors and an evaporative emission control system (EVAP) which sealed the fuel system of a vehicle, preventing fuel vapour from being released into the atmosphere. Fuel evaporates rapidly and if exposed to air will constantly pollute the environment, even if your Mazda RX4 is parked.
Consequently, the importance of the then ‘insignificant’ fuel cap jumped into the spotlight. Now, when your Mazda RX4’s fuel cap fails it can illuminate the vehicle’s check engine light as the system senses a fuel vapour discharge. Also, if the humble fuel cap is faulty it not only can increase fuel consumption but could also create a potentially dangerous situation should a spark cause ignition from flammable vapour leaking from your Mazda RX4.
We handle the fuel cap every time we fill up. Next time you do so, examine it. The cap can quickly get damaged or wear out over time. If your Mazda RX4’s fuel cap needs to be replaced this will cost you around $20 to $160. Price will depend on what Mazda RX4 you have and the type of fuel cap required for that specific vehicle.