2001 ram 1500 v8 5.2L. 318 motor
It wasn't too bad under the plenum plate. But inside the intake was nasty and throttle body had about 1/8 inch of carbon don't know how the even openedThe plugs look old but the gap doesn't look too bad.
I personally on run Mopar cap and rotor only, IMO it just works the best and never any moisture issues.
I also preferred Summit 8mm spark plug wire set - great set, good price, excellent bang for the buck.
IF yours doesn't ping at all, using Jeep 4.0L copper spark plugs (I use NGK or Champ) will give you a bit more power, esp. on the low end - but if yours pings normally, it might make it worse. Mix all of that with a MSD 6a firing an 80's style oil filled coil and it gives a good bulletproof ignition system. The stock coil and high perf. replacement coils just failed to much for my taste. But just using the stock coil without the MSD would work good too.
Was it really sludged up under the intake manifold???