Folks, very close to done on my troubling rebuild of my son?s 08 Wrangler X 3.8L engine. One remaining P0300 code which I?ve isolated to the #5 cylinder. Compression check good at 160psi, wire tests with the same 8 olds as the rest, plug was black yet worked fine when swapped with #4. Spark is strong when wire pulled from idling engine. All this points to a fuel injector. A visual inspection showed injector plugged in properly. I suppose a noid check would verify impulse circuit health. Quite difficult to access the wire plug with this engine. Any recommendations or thoughts?Is there something i?ve missed?