Function SetVehicleHealth set a vehicle's health. When a vehicle's health decreases the engine will produce smoke, and finally fire when it decreases to less than 250 (25%).
Full vehicle health is 1000. Higher values are possible. For more information on health values, see this page.

(vehicleid, Float:health)
int vehicleid
float health

Return Values:
  • 1: The function was executed successfully.
  • 0: The function failed to execute. This means the vehicle does not exist.

if(strcmp("/fixengine", cmdtext, true) == 0)
    new vehicleid = GetPlayerVehicleID(playerid);
    SetVehicleHealth(vehicleid, 1000);
    SendClientMessage(playerid, COLOUR_WHITE, "The vehicles engine has been fully repaired.");
    return 1;

Related Functions
The following functions may be useful, as they are related to this function in one way or another.

Related Callbacks
The following callbacks might be useful as well, as they are related to this callback in one way or another.