That are two ways of removing the rocker arms and lash adjusters of this model engine Thre This is a procedure endorsed by the manufacturer, and it entails the removal of rocker arms without having to pull our the camshaft(s), with the help of a specialized valve spring compressor meant for the SOHC engine. This tool centres itself on the camshaft while a ratchet or a breaker bar is used to ease out pressure on the valve spring thus on the rocker arm. The other method involve with the removal of the camshaft. Both procedures give the same outcome, yet if the manufacturer provided a special tool, it is much simpler to use it. First of all, take the valve covers off and place the valve spring compressor on it, which will compress the spring such that it is enough to unbolt the rocker arm. If the rocker assembly and the aluminium camshaft cover assembly have been removed, these units must be refitted to their original location so, it is recommended to label and store all these components before confusion arises when refitting them. Third, it is necessary to remove hydraulic lash adjuster and lay it together with rocker arm for the correct assembly. If the vehicle has many miles then the adjusters may be rather corroded and rigid to get off; this calls for the use of penetrating oil. Check each adjuster for signs of wear or damage; if there is any doubt as to their condition or if valve noise is heard, replace them-especially if they are worn, as indicated by pitting or discoloration. A thin wire that can be in form of a paper clip or any flexible wire can be used to pull the plunger upward to check if it is stuck by passing through the oil hole. The lash adjuster should have 1.5 mm of total travel in the plunger, and if any of them needs replacement, it is best to replace all because replacement in the future is likely to be required. Furthermore, it is important to check for signs of wear or damage on the rocker arms and, in particular, on the roller, the area of contact with the valve stem, and the position of the lash adjuster. Before placing them on the lash they should be bled of air by standing them vertically in oil and operating the plunger with a thin wire or a paper clip until they stay in it until the time of installation. Clean the valve stem tip, the rocker arm, and the lash adjuster bore with a clean part of the oil-filter cardboard then apply a clean thin layer of oil over the lash adjusters and the rocker arms while keeping the valve spring compressed. The removal process is however the opposite of the installation process. Do not turn the engine on till there is a hissing sound which will show that all the lash adjusters are free of air; revving the engine up from the initial stages to 3,000 strokes per minute for a one-minute duration after warming the car should do away with the sound as soon as you turn on the engine.