my mechanic already changed the timing belt, and i replaced the sparkplugs and flushed the coolant when i installed my skunk2 intake manifold. i will read my manuals about adjusting the valves. i might take it to my mechanic just bc i need my car for school and work enough that it might not be worth the risk i definitely know about doing it right though. when i installed my intake mainflod, i put it on wrong and left a whole in the manifold after the throttlebody so it kept revving, and then either my friend didnt torque down the nuts hard enough or i connected a hose in the wrong spot, leaking coolant into the engine. but i learned a lot from taking if off and putting it back together twice. thanx again guys