I have been a bit worried about passing smog this year since two years ago I barely passed the low speed dyno portion with a HC reading of 95 ppm (with a max of 95 allowed). This was despite having new plugs, wires, rotor, cap, valve adjustment, timing adjusted, new air filter, oil change and tested and cleaned egr valve. On the advice of wristy (via his hotline) I decided to clean my valves with some sea foam. I was a bit reluctant to use a "snake oil product". The method I used was to start the motor and then disconnect the vacuum line that goes to the brake booster (at the manifold end). You need to hold the throttle open a bit or the motor will stall. I dumped in a whole bottle of sea foam through a funnel attached to a piece of hose and a bunch of white smoke billowed out the tail pipe. I then shut off the motor with the ignition but it proceeded to diesel for about 10 seconds along with jetting black crap and white smoke (out the vacuum port that was still open). After about 10 minutes I started the motor up and idled and then drove it until it stopped smoking. The amazing thing is that the motor is now idling better, seems to have more power and the low speed dyno HC reading on the smog machine is reduced from 95 ppm down to 74 ppm. This was on a original, stock 22re motor with about 180,000 miles that burns about a quart every 1,000 miles. Did the sea foam do its job or is it just coincidence?