Proper and most expedient use of seafoam
1. Have a 2nd person for assistance (they will be in the vehicle w/ foot on gas pedal to keep engine running)
2. Pull the brake booster vacuum line off
3. Start vehicle
4. Slowly pour seafoam into the vacuum line, it will suck it right in and cause the engine to bog down [not too much too fast, remember it's replacing fuel and oxygen in the cylinders] (your partner will gently give the vehicle gas to keep the engine running [keep RPM's around 2-3K])
5. Keep pouring at a decent pace into the vacuum line until a large cloud of white smoke starts pouring out of the exhaust pipe (try not to use more than 1/2 the bottle)
6. Partner will shut vehicle off with key
7. Replace brake booster vacuum line
8. Dump remaining bottle of seafoam into the gas tank
9. Wait approx an hour for the seafoam to soften all the carbon and goo in the engine
10. Take the vehicle out of the road for at least 10 miles, drive the snot out of it so it blows the loosened carbon and junk out of the tail pipe (vehicle may smoke like a busted stove for a few miles)
Enjoy!