Sounds to me like you didn't change your oil afterwards.I would be careful with that seafoam. Running a non compressible liquid into the intake of an engine could lead to major damage if it hydraulics the engine.
Also my engine is currently apart for a rebuild and I had used sea foam in the oil to try to cure a noisy lifter problem. I found a lot of viscous tar in the oil pan, which I believe is from the sea foam.
I would use it sparingly and with caution.