26 oz for warm climates and 28 for cold climates. It is on the label placed on the right front shock tower. The reason for less in hot climates is due to the expansion properties.

If you added 14 oz, and the clutch still cycles a lot, you still may be low. Make sure you have closed the outside air vent in the center of the dash, a lot of people forget to do that when the outside air gets above 90F.

Without a gauge, let the engine and AC run for about 3-4 minutes and grab the two pipes that transfer the cold stuff through the firewall. One should be cold and 'sweaty', the other pipe will probably be warm. Now, connect a can of R134a and hold it upright. If the clutch still cycles a lot, turn the can upside down for a few seconds until it stops cycling. Hold the 'warm' pipe with your other hand. When the 'warm' pipe starts to get cold, the system is full - unplug the can. Remember to turn the valve to the can off first.
Turning the can upside down will introduce a lot of liquid R134a to the system rapidly. It is suggested to move the can from vertical to horizontal in 3-5 second bursts.
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