I have a 06 DC Tundra with 28k on it and just ran two cans of Seafoam thru the intake vacuum line. This produced a huge volume of grey smoke for about ten minutes (my neighbors love me ) After the treatment the truck pulled much lower into the rpms - even down to 1100 before it downshifted and it ran noticeably smoother now on 87 octane than it did before on 92. I was surprised how carboned up the combustion chamber must have been in only 28k. Why would it run so much better with less carbon on the motor?? By the way it wasn't pinging yet. I guess I'll treat it again until it doesn't smoke as much as I assume if it is still smoking that it still has carbon in there. Anyone think that you can use too much Seafoam (other than my wife and neighbors)
The smoking is due to the incomplete combustion of the Seafoam itself as there is not enough oxygen in the combustion chambers to burn it all. The amount of smoke doesn't indicate the amount of carbon being burned away, rather it indicates the rate at which you fog Seafoam through the cylinders.
But don't let the smoke stop you. Seafoam is really good stuff.
Seafoam looks, smells, and feels like Coleman Fuel, i.e. it's mostly naptha. It soaks into the carbon deposits and so helps burn them off. Just follow the directions.
The smoking is due to the incomplete combustion of the Seafoam itself as there is not enough oxygen in the combustion chambers to burn it all. The amount of smoke doesn't indicate the amount of carbon being burned away, rather it indicates the rate at which you fog Seafoam through the cylinders.
But don't let the smoke stop you. Seafoam is really good stuff.
That would explain the smoke while adding the Seafoam but after sucking the can in the vacuum line, letting the engine sit off for five minutes then restarting the engine and reving it up it smokes for at least ten minutes. I would assume that if it were completely decarboned it would not smoke for as long after restarting the engine. I Seafoamed my Sequoia and it didn't smoke much at all even though it has the same engine with more miles but more towing and highway miles. So the question is do I keep retreating the Tundra until I get very little smoke or do I leave it now as it runs smoother and lugs lower?
That would explain the smoke while adding the Seafoam but after sucking the can in the vacuum line, letting the engine sit off for five minutes then restarting the engine and reving it up it smokes for at least ten minutes. I would assume that if it were completely decarboned it would not smoke for as long after restarting the engine. I Seafoamed my Sequoia and it didn't smoke much at all even though it has the same engine with more miles but more towing and highway miles. So the question is do I keep retreating the Tundra until I get very little smoke or do I leave it now as it runs smoother and lugs lower?
Thanks, Mike
Beats me. Likely it wouldn't hurt anything but your wallet. How 'bout doing it and letting us know? That way if it explodes, it won't hurt us.
That being said, I put one can through the manifold and one can in the gas tank. The smoke quit fairly quickly and the idle is now quite smooth again. I'll keep using it, perhaps a bit more often.
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