CEL after Seafoam

[rugbyben]

I used seafoam to clean the top end this weekend. sucked in through the break vacum line. it had all the expected results. ran rough for a while....lots of white smoke, but the CEL also came on. The car is running much smoother and starts quicker then before, but after about 8 starts the cEL is still on. should i get codes pulled or ignore it?

 

In my limited experience the CEL shuts off after a bunch of starts if it doesnt detect the problem again... right? Could the rough idle after the seafoam triggered somthing?

[Cougar]

The problem May be due to the rough idle but it could be other things also. I would get the codes read to see what they are and go from there.

[NoahDL88]

give it a week, i'd bet money its a misfire code, should go away after X amount of drive cycles where the engine reads normal operating temperature.

[1 Lucky Texan]

give it a week, i'd bet money its a misfire code, should go away after X amount of drive cycles where the engine reads normal operating temperature.

 

+1 misfire code

 

Wait or clear by disconnecting neg. batt. term. ,step on brake pedal, wait 20-30 mins. , reconnect batt.

 

If it comes back, definitely get the code.

 

 

Carl

[Setright]

Could be one your O2 sensors is complaining about the bombardment it recieved ??

 

:-)

[shortlid]

Ya, my '98 L wagon with EJ22 did the same after a Seafoam treatment. Autozone checked it as misfire and cleared never came back.

[cookie]

You just poured a barely combustable mixture though your engine. Should you really be surprised it caused a misfire?

You would have to use a tiny trickle to avoid that. Odds are if you clear the code you'll be fine, but sometimes you can get a bit of carbon on a plug that needs to be cleaned off. Most times it will just burn off.