Take the big vac line off the brake booster. Engine will studder and die if you don't hold your finger on it. I used a funnel and just kept blocking the hole with my finger as I poured the seafoam into the funnel. Then let the seafoam slowly get sucked in. When you're close to done, pour a lot of seafoam all at once so the engine dies and let it sit for about 10 minutes. Then start 'er up (it'll be hard to start it at first). I actually used the whole bottle doing this. Got carried away but it didn't hurt anything. Quite a smokeshow after I let it sit 10 minutes. Anyway, after you let it sit 10 minutes and get it started, look for leaks in the exhaust from the smoke. This didn't work for me though. Sorry for long paragraph, my enter key isn't working for some reason.