Using SeaFoam

Yesterday I put a whole can into the brake booster vacuum. I didn't let it stall, I let it suck down slowly. Let it set 20 minutes, throttled up to about 4000 until the white smoke came. When it cleared I eased off, more white smoke. Same thing all the way down until there was no more smoke. Then another can in the gas and oil. Idles a lot smoother now.