Why does the Mazda RX8 flood when you shut it?

Answer 1

The Mazda RX-8 tends to flood at cold temperatures or when the optimal temperature has not been reached. The reason is because the extra fuel washes away the oil on the rotor seals causing a drop in compression while the fuel injection system is still spraying even more fuel.

Flooring the accelerator shuts the fuel supply off.

****Actually the car will flood if it is not run long enough to get to normal operating temperature regardless of outside temperatures. In order to avoid this very expensive trip to the dealer you can run the RPM gauge up to 6000 for 5 seconds and shut the engine off (while it is still running at 6000 rpm.) Always let the car warm up and then run it at over 3000 RPM for a minute before turning it off.

Don't start the car, move three feet and turn it off.

Also:

See your local Mazda dealer if the car is flooding.

There are new engine management ECU flashes available to correct flooding.

You also may need a new engine, the engine warranty was extended to 100K miles by Mazda for most RX8s, have the dealer check your engine vacuum and compression to see if you need a new motor.