[This is from original poster] Thanks everyone who answer my question. I would like to answer some questions directed to me. I am the third owner of this car and I have it for about 6 years now. My D pass the smog check in previous 2 times. My car was not driven very much in pass 5 years (50 miles per year). I have not replace O2, spark plugs, spark plug wire, dist. rotor and cap yet since it is in storage most of time. Now I drive the car everyday to work. I think it is about time to do the tune up. I will replace all the usual thing and let you guys know the results. thanks everyone again.... rendy