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Look up removing the plenum, then the injectors are right there and will be straight forward to replace. Removing the plenum is the hardest part.
Here is a general overview (poor attempt at one) and pointers.
Remove the plenum first.
Once the plenum is off, there are two T-25(?) screws holding each rail. Once removed, the rail with 4 injectors slide out of the injector ports together. Be careful not to get any caked on dirt into the injector ports while the injectors are removed. That's basically getting dirt directly into the combustion chamber. No bueno.
With the rail in hand, examine how the clip on the electrical connector locks the injector in place. The injector can be pulled from the rail. Know that once you disconnect the injector from the rail, fuel will spill out. Have a towel on top of the engine. Fuel eats through the clear coat of your paint, be careful not to get any on the fender or bumper.
Important: there is a oring on the port side and fuel rail side. Make sure once removed, the oring came out with it, if not, use a small flathead to carefully pry it out. Reason being your new injector will have new orings on it, it won't seat properly into the port or rails if the old oring is still inside.
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