Can't comment on the Sportage, but on the Spectra, there is a cover
covering both the Plugs, and the Coils.

The cover on the top of the motor is removed with a screwdriver, then
you can get access to the plugs.

I'd blow any possible dirt down inside with compressed air first, then
you'll need the proper fitting spark plug socket, ratchet, and
extension.
Without a spark pkug socket with internal rubber ring, you won't be able
to extract the plugs.  Before installing, check the gap, and I'd stay
with the exact same plugs, which are probably NGK Brand.  Mark

G'day!
 throttle body has to come off first...10" wobble extension with a 12mm
socket will get the back one loose easily..2 6mm bolts hold it to the valve
cover..one holds the resonance chamber to a bracket at the rear of the valve
cover..2 spring clamps for the air bybass hoses..and unplug the idle air
control valve.. careful you don't bend the gasket for the throttle-body..6
6mm bolt hold the cover over the coil packs..note coil/wire
arrangement..some people have been able to reverse them.  If the sportage
has 30k or more..buy both plug wires..it will save you going back in in a
few weeks ! If high mileage..you may want to price a valve-cover
gasket..they fairly routinely leak into the plug cavities.
Have Fun !
mike

just take the cover off 4 bolts and wola their are the plugs.. use care
when you remove the coil packs as to not crack them.Easy job