Hi,
In Zangarmarsh there are quite a few quests that involve killing naga this is where this exploit is usefull the quest Thottbot World of Warcraft: Quest: Balance Must Be Preserved will give you an item called Ironvine Seeds while you have the quest these are used to disable the naga pumps in Zanga.
The Exploit is that these can be used over and over again on the same pump basicaly leting you choose when to spawn the Mob Thottbot World of Warcraft: Creature: Steam Pump Overseer
These drop of Thottbot World of Warcraft: Naga Claws needed for another quest, they also have a high drop rate of plant parts, you can also kill them for there Thottbot World of Warcraft: Drain Schematics that only drop from this type of mob.
The Cords for the pumps are:-
Unbrafen Lake - (70,80)
Marshlight Lake - (25,42)
Serpent Lake - (62,40)
The Lagoon - (63,64)
-Karakis