I have a 1998 Z24 and the plugs are under the big aluminum cover on the top of the engine (4 bolts). There are no spark plug wires...just a boot system mounted to the under side of the cover and the ignition stuff is there too. Plugs will strip quite easily if you are not careful (13 ft/lbs). Bosch 4 prong plugs are well worth the money.
a/c delco is the best
4...under the coil cover
if you really have to ask that question, put the tools down, step away from the vehicle. and take it to a professional. seriously.
Listed under the hood on a placard.
change distributor cap and rotor
Take the valve cover off and the plugs will be right under it
you must take the top module off the engine and then remove the rubber plugs that are on top of the spark plug, then use the spark plug sockets to get them out you must take the top module off the engine and then remove the rubber plugs that are on top of the spark plug, then use the spark plug sockets to get them out you must take the top module off the engine and then remove the rubber plugs that are on top of the spark plug, then use the spark plug sockets to get them out
check out ehow.com look under cars and then the category for repairs ect
When you buy your AC-Delco recommended spark plugs, the person who identified the spark plugs for you at the parts shop can find the gap on the computer he used to identify, and gap them for you. Most cases, the spark plug is already gaped because it is matched with the car, especially if you buy AC-Delco Plugs as the manufacturer suggests.
It could be bad spark plugs. try changing your plugs.
Need more information, what specifically do you want to know?
Under niether what looks like the Valve cover/Remove the two bolts lift cove up