SLowly and carefully use the brake booster line to suck it in. I don't let it choke out the engine either, I go turn it off with the key. I've heard of people locking their engines by sucking it in too fast.

Let it sit for 5-10 minutes, then fire it up. Enjoy the huge clouds of white smoke!

 

ok just did the sea foam thing. put it in my carb, my oil, and my gas tank and wow. ITS MAGIC. runs so smooth now and the little pinging i had is now completely gone.