I put sea foam in my civic eg hatch d15b7 in the oil and the in the gas tank but it wasn't smoking. So then I put it in my vacuum line and it started blowing out smoke. So I shut it off and let it sit for like 5 minutes then I started it up agin and it ran really bad and smoked a lot I thought the rough idle would go away once the sea foam was gone but it didn't my car sounds like a Subaru and I have a big loss of power I can't even get up my driveway. It stalls a lot too I put new oil in new fuel filter drained the gas and put a new PVC valve in and it still did
If any of you guys can help or ask question it would be nice I don't know if I need to rebuild my motor or not.

 

What the ****

 

Change the engine oil and oil filter. Replace the spark plugs.

 

A lot of people said NOT to use Seafoam on older motors, but apparently you missed the memo. I had to re-ring my old motor after using seafoam. It's easier to just clean out the IM instead of relying on harsh chemicals

 

x2 on the spark plugs. seafoam had been known to foul plugs if everything is really dirty

 

I have tried that with the spark plugs how do u know if there bad

 

Pull the spark plugs out and see if they got messed up

 

I agree. It should be safe to add to the gas tank, but beyond that I'd stay away from the other methods.

The color of the spark can indicate how well your ignition system is working. Spark plugs, wires, cap, rotor and sometimes the coil can all contribute to poor spark.