Just in case some people were wondering about that post and all the methods of using SeaFoam, I thought I'd repost with the details laid out in one place.

First of all, SeaFoam is a great additive. It does work really well to clear up carbon deposits Put it in the fuel tank, feed it through a vacuum hose into the intake manifold (engine running), or squirt some directly into the combustion chambers.

I tried the 10CC trick with a syringe, it worked nicely. I removed the fuel rail and injectors, and I filled each cylinder with 10CC of SeaFoam. Then I also filled up the very top of each fuel injector before I put the fuel rail back on. Obviously a very small amount goes into each injector that way, perhaps 3 or 4 drops, but that way it goes straight into the cylinders without being diluted.

Here's what I did: I put 10CC into each combustion chamber, filled the top of each fuel injector (very small amount), and put the fuel rail together. Then I filled the half-full fuel tank with 11.5 ounces of SeaFoam (1 ounce per gallon for a full tank).

I let the car sit for about 20 minutes to let the SeaFoam to work its way into whatever carbon was inside the engine, and then cranked it over. It sputted and chugged like crazy while it spit out all the liquid, and it smoked like mad for about 10 minutes while it warmed up. Once the engine was warm, I drove the car really hard (high RPM shifting, lotsa throttle, etc) down to the gas station to top off the tank. By the time I was back home, the car had stopped puffing smoke, and was already idling smoother.

I haven't tried running SeaFoam through a vacuum lien yet, but that procedure above works really well if your car is high-miles. I highly recommend it


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