If you remove the hose from the PCV valve - take a pair of vice grips or other lockable pliers and slightly restrict the amount of air that can get in. I also put a small funnel on the end of the hose and slowly pour in the Seafoam.

Remember to let the Seafoam "soak" in for a bit (15-20 min) with the engine off. Then restart in a well ventilated area - there will be a great deal of white smoke.

Best of Luck.
Andrew

Duty is the sublimest word in the English language.

'96 SR5 4x4 5sp, ARB Prado Bull Bar, PP 1 Springs & Bils, Deck Plate, Hella 550s, PIAAs
Volvo '97 850 GLT - Sublime Rice Killer