[Blownrunner]

I just did mine via the disassembly method. Mine had so much old oil on the front of the engine from the oil change places not cleaning after removing the oil filter (previous owners). I removed the plenum down to the starter and just cleaned everything piece by piece (and the radiator, and the area under the headlights, and the battery and air conditioner area).

The best thing to do is keep up on the cleanings, get into the hard to reach areas using mechanical fingers, a cloth rag, and isopropyl alcohol.