Where are the spark plugs located on a 2002 Jeep Wrangler?
The spark plugs on a 2002 Jeep Wrangler (assuming a 4.0L inline-6 engine, the most common) are located on the top of the engine, between the valve covers. They're accessible once you remove the plastic engine cover (if equipped). You'll need to consult a repair manual or online diagrams specific to the 4.0L engine for the exact location of each individual plug (they're in a somewhat staggered arrangement).