mkguitar wrote:
seafoam doesn;t all burn and can leave deposits.
I'm not sold on it after trying it in my pick up truck- which promptly failed emissions.
talking to seafoam they asked me to run a couple of tanks of gas through and re-test.
after which my co and HC levels were same as the years before.
I won;t buy it again.
mike
If it went back to normal, I don't think you can blame the Seafoam. The same thing often happens when you use any fuel system cleaner or even if you switch to high detergent fuel like Top Tier rated gas after using the less detergent fuels. Anything that changes the orifice size or shape in the injectors will change the mixture, and it takes while for the computer to compensate, especially if the changes are ongoing like with cleaners. Once the cleaning is done, they almost always are back to normal.
The same thing happens often with a generator. Folks adjust the mixture to compensate as the jets gum up, and then when they run cleaner, they wind up tweaking the mixture back as things clean up.