I just used 1/3 can of Seafoam through the PVC valve of my 91 accord (320k miles), and after (or while) I did it, white smoke was coming from the engine bay. It seemed at first like it was coming from the valve cover but then I saw that it was coming from below the VC... It did fix my idle problem (thank God) and it also made my car run better, but i'm kind of surprised / worried about this smoke from the engine.
But what could this be? Is it a bad problem? I read on the internet that it could have been a vacuum leak.
Re: White smoke from engine after Seafoam treatment
Originally Posted by Mishako129
But what could this be? Is it a bad problem?
One of the neat, and sometimes unexpected, outcomes of seafoaming a vehicle is any exhaust leaks, or blow by, will show up as white smoke.
Add the recommended amounts to the fuel and oil, this may help a sticking ring, but if a ring or cylinder is bad, or the valve guide is sloppy, the white smoke will find the path of least resistance, be it a bad ring/cylinder, valve guide, or gasket.
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