[DDDman]

I used that method on my 96 225hp Johnson except I use a tub instead of the muffs. After the waiting period there was lots of smoke and the water was much darker and more oily than any normal flush I performed before. After the second break and water change there was less smoke and the water was less dark. Overall after the decarb it seemed like it idled smoother and the throttle response was a bit quicker.