[iGetty]

Change:

pawn Код:

forward EngineOn();
public EngineOn()

to

pawn Код:

forward EngineOn(playerid);
public EngineOn(playerid)

Then,

pawn Код:

engineon = SetTimer("EngineOn", 3000, 0);

To

pawn Код:

engineon = SetTimerEx("EngineOn", 3000, 0, "i", playerid);

Because what you are doing is setting the timer for ALL players on the Server, where you only want it for the one player.