Seafoam may produce smoke ..... but that's it
I looked at the throttle body on my 04 with 52,000+ a week ago and there was very little residue anywhere. I use Chevron Techron two times a year and have had no problems with carbon fouling. Forget the Seafoam. Regards
AMEN Donald ...... Seafoam is snake oil personified. Top tier gas, occasional Techron, & synthetic oil are all a 2010 (or 2011) Camry (that is properly maintained) needs to run like new until the engine outlasts the rest of the car. Well, OK coolant flush at 100,000 miles and plugs at 120,000.
If you just want to see all the smoke blow out an exhaust pipe, (yes, I have seen the Seafoam youtube videos) ..... put a bunch of oil in the fuel your 4 cycle lawn mower engine.
And ...... speaking of snake oil ..... over in the Camry enthusiast forum ... someone is claiming that BG Air Intake System Cleaner
will fix the oil burning problem on the pre-2010 2.4L engines for which there is a TSB that remedies the problem ....... with an engine rebuild.
I think this pretty well sums it up:
I bought a can of seafoam last time I was in the US and finally got a chance to use it. I poured 1/3 of the can into the air intake via the PCV hose while the engine was running, and then shut it off and waited a little over 5 minutes. Then I started the car and had to keep the throttle open to prevent it from stalling out, all the while white smoke is billowing out the muffler.
During the "show" the MIL came on and the code was P0300 (multiple random misfires), this makes sense seeing as the seafoam seems to choke the engine. Isn't that really bad for the pre-cat?
Also, the reason I say it's snake oil is that I didn't notice any improvement, in fact I think it may have made my idle a little rougher.