Used Seafoam in the TL tonight, just through the brake booster line. Fed it to it slowly, stalled the engine one time. It'll sputter and shake and almost die, but pick back up if you let it off. After it sat for about 10 minutes, huge amounts of white smoke poured from the tailpipes, so I thought it was picture worthy. Can't really tell a difference in performance or smoothness, but that may be because my car only has 45.5k miles.



Edit: Perhaps white smoke is just seafoam burning off and the engine wasn't dirty enough for seafoam to really do anything? When I helped do it to a Camry with 117k miles, the smoke was sooty and blue and there was definitely a difference in smoothness.

 

never heard of Seafoam.. what is it? im guessing its a fuel type/engine cleaner?

 

yeah.. what is it? and how do you use it?

 

you feed it in the brake booster line, why? obviously the car is running while you're doing this, do you ned to pull the TB cable to avoid car from stalling or just sit there and hope it doesn't?

 

I've SeaFoamed my car a couple times. SeaFoam is a light solvent/mineral oil cleaner that you can run through the engine to clean out the intake, CCs, etc. You can also add it to the oil to remove varnish, sludge and crud from the engine internals.

When I did my car, I added it through the PCV vacuum line on the rear side of the intake tube in front of the TB and I got the same effect. I did this at night so the huge cloud of white smoke was not so noticeable I did it just before I changed my oil so that any SF that got into the oil would be drained out and wouldn't contaminate the new oil. You add it slowly with the engine idling and the engine will stumble as the liquid gets into the intake and "floods" the engine; I end up slowly pouring in the whole can.

I haven't noticed any problems using SF but I do think my car idles smoother. You can get SF from AutoZone.

 

So seafoam is kinda like an all-in-one cleaner? What's the difference between using seaform and carb cleaner that you spray into the TB? I had the same white smoke effect when I used carb cleaner on the TB - only I did mine during the day and scared the neighbors.

 

Yeah SF is an all-in-one deal. There really isn't any practical difference between SF and TB spray, only the way you use it (SF is a liquid in a can that you pour but it is available in spray form called DeepCreep). The difference is the chemicals. TB and carb cleaners are predominantly toluene; SF is mineral oil, a much heavier liquid. It makes the white smoke because it's like a theatrical smoke machine; they make smoke by burning mineral oil. SF uses mineral oil because it does a nice job dissolving carbon.

 

it probably stalled more because you had a vac line off which brought way to much air into the engine...

 

i used SF in my 94 gmc jimmy beater truck that i have with 115K on it you hadda see the smoke that came outta the back of it like completly fogged up half the block lol. it acutally worked though engine was a bit smoother