So... not being able to find a can of Aerosol Seafoam, I have to buy a bottle of it... yet I'm not entirely sure which vacuum line to use to suck it up. I was thinking the Break Booster vacuum. Any one have any ideas? No I don't wanna introduce it via my Fuel tank, because I feel that method does not entirely work too efficiently.

Accord V6 1999

 

Not too efficiently for what? Sucking it into the intake manifold won't clean the injectors. Pour it into the fuel tank & it won't clean the intake manifold.

 

Jim, I've used it in the tank with no negative issues. Never injested it. Afraid of hydrolock. I remove the spark plugs, pour in an ounce and let it sit for an hour. Add another ounce and rock the engine back and forth for a few minutes then spin the engine to remove all the liquid - a bit messy, so cover the engine. Pop in the plugs and fire it up - really fire it up, not idle. Will remove all the cabon in the engine to the tailpipe tip. Now this may not help the throttle body/intake, but the valves will clean and the rings and cyl bores are sure to be clean. Expect to see shiny aluminum piston tops before you stop and put the plugs in. In the fuel does well enough with the intake parts.

 

Sucking it into a vacuum hose, you have to let it go slow. Too fast & it'll stall the engine before you get hydrolock.

You can pretty much use any vacuum hose, but the brake booster hose is convenient & a little easier just because of it's size.