The timing system is intricate, and, due to the typical mistake, considerable harm can be done to the engine, making it a process suitable only for experienced persons. Start by removing the negative terminal then the spark plugs, where the engine should be timed with the #1 piston on the compression stroke without rotating the crankshaft until the timing belt is put or replaced. Disconnect the cooling system, take off the drivebelts, the fan shroud, fan and water pump pulley, the upper hose and the thermostat housing. If access is a problem one can always take off the radiator for even more clearance. Remove the hoses but do not disconnect them by removing the bolts on the air conditioning compressor, then pull it out of the way, remove the bolts holding the bracket on the engine and set aside the power steering pump and the bracket assembly. Take off the outer timing belt cover, crankshaft drive belt pulley, and the belt guide, then unbolt the outer timing belt cover by the use of four bolts and one screw. Remove the belt tensioner adjustment and pivot bolts to reduce belt tension and then use a belt tension releasing tool and pull the timing belt and then check the same belt for any sign of wear or damage on it. Inspect the sprockets for signs of wear or damage and then fit new ones where required but ensure that they are fitted correctly together with the bolts used for mounting them. Allow the crankshaft to turn freely by hand at least two full revolutions, feeling for any tightness which may be caused by valves coming in contact with the pistons before starting the car's engine. With the crankshaft sprocket still at TDC re-align the camshaft sprocket and the oil pump pulley with the corresponding pointers on the inner timing belt cover. Fit the belt to the crankshaft sprocket and auxiliary shaft oil pump sprocket and then stretching the belt from the camshaft sprocket to the auxiliary shaft oil pump sprocket so that the belt can sit correctly on the sprockets. Turn the tensioner adjustment bolt to enable the tensioner to push against the belt, and, optionally, use a pry bar to set the proper tension. After starting the engine turn the crankshaft two full turns to help adjust the belt and feel the contact of the valves with the pistons. Make pressure onto the tensioner assembly and turn the adjustment & pivot bolts then you have to verify the proper positioning of the timing marks. Fit the timing belt cover and torque the mounting bolts; doing other installation procedures in matching sequence while engaging the crankshaft pulley/sprocket bolt must be tight to a specified torque. Last of all, align the timing mark in both the front and rear before putting back the belt cover access plugs.