After all the talk about the Seafoam, I tried it tonight on my 91 with 158000 on it. I slowly allowed a third of a can to be sucked in through a vacuum line, noted a bit of smoke, and then killed the engine for 5-6 minutes. It died twice upon restart and smoked a little, but NOTHING like what I have seen on the various youtube videos.
Is my engine just that clean or did I somehow do something wrong?
The more build up the more smoke. If it doesn't smoke a lot, that means you didn't need it as much.
