Ruff idle after Sea Foam, check engine light on
 

I used sea foam today and the light came on. It starting running ruff and shaking. I put more gas in to dilute it, it helped but it still has the issue. Should I reset the computer by unhooking the battery? I heard it also could be a carbon build up on the plugs, or the O2 sensor. Should I just get the codes pulled? Any ideas would be great.

I think you are supposed to change your plugs after you seafoam it. I could also be a whole bunch of camel snot crap that coats the exhaust after you use it, I have seen a few bad cases of that happening on outboard motors. Personally I don't want to see that gunk anywhere near my O2 sensors and catalytic converter, so no sea-foaming for me.

I would get the codes. Autozone and Advance Auto usually do them for free. Then you can do the research. Did it fix itself?

Change / clean the plugs.
It is common for one or more to foul after a seafoam treatment .

Wirelessly posted (Timberwolf)

Its supposed to start like crap. It took me a second crank to get my rig started. Then it mellowed out, and gave it some gas for the smoke show! Take it for a good rip on the hwy. I dumped 3/4 bottle in my brake booster vac line and the remainder in the fuel tank. Runs great.

Wirelessly posted (Timberwolf)

How did you use it?

i always used seafoam right before every 5 oil changes and did a tune up also... it was about once a year... i change the plugs every winter whether they are bad or not

Wirelessly posted (Timberwolf)

New plugs every year?

Truck fixed itself, just had to run it threw the system.

Seafoam is the shi*t. It might be the best stuff on earth.

yea it only cost about 20 bucks and it helps gas mileage....
i change my plugs every 6 months in my tbird....

Nice. I change my plugs every 7 or 8 years, whether it needs it or not. It is time to do it again. Once it is warm enough outside.

Glad it fixed itself.