--- a/net/minecraft/world/level/block/LeverBlock.java
+++ b/net/minecraft/world/level/block/LeverBlock.java
@@ -27,6 +27,7 @@
 import net.minecraft.world.phys.BlockHitResult;
 import net.minecraft.world.phys.shapes.CollisionContext;
 import net.minecraft.world.phys.shapes.VoxelShape;
+import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit
 
 public class LeverBlock extends FaceAttachedHorizontalDirectionalBlock {
 
@@ -104,11 +102,25 @@
 
             return InteractionResult.SUCCESS;
         } else {
-            blockstate1 = this.pull(blockstate, level, blockpos);
-            float f = (Boolean) blockstate1.getValue(LeverBlock.POWERED) ? 0.6F : 0.5F;
+            // CraftBukkit start - Interact Lever
+            boolean powered = state.getValue(LeverBlock.POWERED); // Old powered state
+            org.bukkit.block.Block block = level.getWorld().getBlockAt(pos.getX(), pos.getY(), pos.getZ());
+            int old = (powered) ? 15 : 0;
+            int current = (!powered) ? 15 : 0;
 
-            level.playSound((Player) null, blockpos, SoundEvents.LEVER_CLICK, SoundSource.BLOCKS, 0.3F, f);
-            level.gameEvent((Entity) player, (Boolean) blockstate1.getValue(LeverBlock.POWERED) ? GameEvent.BLOCK_ACTIVATE : GameEvent.BLOCK_DEACTIVATE, blockpos);
+            BlockRedstoneEvent eventRedstone = new BlockRedstoneEvent(block, old, current);
+            level.getCraftServer().getPluginManager().callEvent(eventRedstone);
+
+            if ((eventRedstone.getNewCurrent() > 0) != (!powered)) {
+                return InteractionResult.SUCCESS;
+            }
+            // CraftBukkit end
+
+            iblockdata1 = this.pull(state, level, pos);
+            float f = (Boolean) iblockdata1.getValue(LeverBlock.POWERED) ? 0.6F : 0.5F;
+
+            level.playSound((Player) null, pos, SoundEvents.LEVER_CLICK, SoundSource.BLOCKS, 0.3F, f);
+            level.gameEvent((Entity) player, (Boolean) iblockdata1.getValue(LeverBlock.POWERED) ? GameEvent.BLOCK_ACTIVATE : GameEvent.BLOCK_DEACTIVATE, pos);
             return InteractionResult.CONSUME;
         }
     }