It is as mentioned, timing system; and if one is wrong, irreversible and catastrophic damage occurs to the engine. This procedure can only be done by very experienced personnel and in any case of doubt, an expert opinion should be sought. Review all work for as much as possible affirm that everything is right before the start of the engine. To start, get the AC unit of the car flushed in a certified service center and then remove the battery's negative terminal and the radiator's coolant. Take out the engine cover and the upper hose of the radiator and also loosen the lug nuts of the right front wheel, lift the vehicle using jack and put it on the stand, finally remove the-wheel of the RPM and the splash shields also. Continue and eliminate lower and upper oil pans, coolant reservoir, and prepare for the suspension of the engine from above. Take the upper engine mounts, loose the transaxle mount bolts, and then unbolt the intake manifold with the support bracket. Position number one cylinder to the top dead centre on the compression stroke, un-bolt the valve covers, drive belt, crank shaft pulley, power steering pump and air conditioning compressor and the alternation. Pull off the drivebelt idler pulley, tensioner, and water pump pulley; followed by the timing chain & cover, the bolts should be arranged as they are removed. Check that the No. 1 cylinder is still at TDC, mark the chain by painting or using crayon, compress the right chain tensioner and then, unbolt and lift of the right upper chain guide, tensioner, and the chain. Proceed further by taking out the right chain guide along with the oil pump chain cover, tensioner, chain guide, sprocket, and chain in addition to the crankshaft gear that is destined for the oil pump and right timing chain respectively. Perform again the removal steps on the left timing chain components such as left timing chain crankshaft sprocket and left timing chain tensioner adapter. Closely inspect the timing chain and the sprockets on both the crankshaft and the camshaft and the chain guides and auto tensioners for possible wear. Scrub the front of the engine, check and / or replace the crankshaft oil seal, and align the crankshaft key and camshafts with TDC. Place the timing chain guide in its intended place, then drop the chains over the crankshaft sprocket and tensioner arm, as well as over the upper cam-to-cam guide; be sure that there is no slack. Remove the chain pins from both of the chain tensioners, then place the oil pump chain guide / tensioner, and start the engine clockwise while turning the engine two full revolution to align the timing marks, these entire processes should not pose much resistance. Scrub the sealing surfaces of the timing chain cover, if required use any RTV silicone sealant and place the cover over the dowels in the block and tighten the many timing cover bolts using the recommended torque settings. Complete the reverse order of the removal process, and after road testing to ensure that there are no leaks, recharge the air conditioning system.