mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Rollover Valve, Fuel Tank|Description and Operation|Page 3065 > < Main Relay (Computer/Fuel System)|Locations|Page 3061
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Rollover Valve: Description and Operation

Check And Cut Valve

PURPOSE

^ To prevent tank damage, vents atmosphere if tank pressure exceeds approx. 0.78 - 1.0 psi (5.37 - 6.87 kPa).
^ To prevent tank damage, allows air from atmosphere to enter if tank pressure is approx. 0.14 - 0.71 psi (0.98 - 4.91 kPa) less than atmospheric

pressure.

^ Blocks fuel from leaking through evaporative system in event of vehicle rollover.

LOCATION

On fuel tank.

OPERATION

A two-way valve that vents either direction depending on pressure. Valve also contains a gravity sensitive shut-off to prevent liquid fuel from
passing when it is upside down.

Rollover Valve, Fuel Tank|Description and Operation|Page 3065 > < Main Relay (Computer/Fuel System)|Locations|Page 3061