I have an exhaust leak so I get some there as well. It could also have come from some dripping down the side of the manifold.

Two cans is a lot btw... but remember to let it sit for a while. The directions say 15 minutes, most of us have found better results from 3+ hours.

 

I just tried out Seafoam for the first time yesterday. It is too early to report any gas mileage findings, but the rig definitely runs smoother and quieter than ever before. If the performance lasts, this is by far the best thing you can do for your 4runner, dollar for dollar (OK, maybe second best next to regular washing, claying, waxing). One quick question... when attempting to disconnect the hose from my PCV valve, I notice that there is no clamp. Why would that be and is this safe? Where would I get a new one?

 

I think I'm going to give this stuff a whirl. I was cleaning the throttle body and shined a light down it and things looked black farther down.

Can one of the little vacuum on top of the TB be used? Or the vent tube that comes off the driver's side valve cover? It seems like the PCV tube or brake vacuum tube wouldn't cover the area as well as coming from the other two mentioned above which would hit everything directly down the TB, not from the back side.

Opinions??

 

Do you HAVE to replace your plugs and oil each time you use Seafoam? I just replaced my plugs about 5k miles ago and just used Seafoam last week without real great results so far (although the winter just hit in Chicago and I am thinking the lack of results is actually the winter gas and weather) so I am hoping I dont have to replace my plugs though as I just did recently.

Also is there a specified amount of seafoam to gas mixture if you put it in the tank.

Thanks, and I did see the link to help Corey out and I am hoping to be able to help him out soon, cuz he has helped us all a lot!

 

"Have" to? no... But you might want to pull them and soak them in some brake cleaner (it's a heck of a general degreaser!) for a while.

 

I think it might be time to do this in my Tacoma. I'm close to 93K and have noticed significant reduction in my acceleration. So sad...

 

TIP I used a clear, 1 cup measureing cup used for cooking to administer the Seafoam. It has a small point on the side for pouring that allows you to slowly put it in the end of the tube. The vacuum pulls it in easily, too, from the point. It also has the amounts listed on the side so you know exactly how much you are pouring in for each dose.

Just be sure to mark this cup in your own way so that it doesn't get used for cooking!

On my second round right now. I had a little smoke after a third of a can and a fifteen minute wait. I'm going to wait a while longer this time as it seems like the second round produces more smoke than the first. Darkness will be my cover!

 

I had never heard of this stuff until here. Everyone's experiences seemed to point to the Seafoam being good stuff so I gave it a try this afternoon. I have run one can through the manifold on my 2.7 in three stages and a can is in the tank.

Everyone's reports of the smoke were making me hesitant to try it because of where I live. (Robert Duvall is a neighbor among other notables) I wasn't sure if I was going to be kicked out of my neighborhood if I smoked the place. Once I let it set for the second time the smoke was much worse (or better I think). Not wanting to have it pinned on me, I booked down the road leaving the "holy smoke screen Batman!" action behind me.

Nobody waiting at my door when I got back home. Smoke was still hanging in the air under the street lights though.

Thanks for the tech.

 

I must agree, the seafoam made the BIGGEST difference. I have an 89 4Runner with 174K on it and I'm sure it has never had a seafoam treatment. After the first 1/3 of a can I could tell a SIGNIFICANT increase in throtle response. By the time the can was empty, it was driving like brand new!!! Thanks Yotatech guys for all the Super helpful info, which without, I would have never considered doing something like this!!

 

oh belive the guy at napa over yota tech vets

 

Got kinda bad gas mileage on the last tank, so after all the glowing reviews, I decided to run some through my 'runner...

Put 1/2 the can in the oil. Put half of the other half in the intake using the valve cover breather tube that joins in the intake just in front of the throttle body. Poured VERY slowly - it actually ran better when I was pouring in the seafoam. Let it sit 1/2 hour, started back up and put in the last of the can, then let it sit 1/2 hour.

I did not get any noticeable smoke out the tailpipe.

Results of test drive - even smoother than before. I had a slight click/ping at idle that seems to not be there now. I'll let you know if the mileage changes any.

 

Interesting read - I've always done something similar when acquirig a "new to me" vehicle that may have had unknown maintenance - I get the engine hot, and then pull a vacuum hose off and put the little spray tube from a can of carb cleaner into it and run 1/2 can of carb cleaner through it - cleans up the intake plenum, cleans the combustion chambers, etc. Same as SeaFoam and about $.89/can on sale. I've only ever used seafoam in outboard engines to decarbonize them - guess it should work the same in a 4-cycle.

As for the posts "post" seafoam that was linked - anyone that's ever had a blown headgasket and coolant leaking in will find the cylinder looking "like new" as the water/steam breaks up the carbon on the piston - that has nothing to do with the seafoam treatment - the other cylinders look cleaner though - but - he did mention he had previously used water injection - same effect of cleaning carbon. (an old trick is to dump water into the carb to clean carbon... of course today there's no more carbs...)

 

sea foam in.. 2 applications so far. smoked like hell and on a 14000 mile engine. I think i'll let it get dark before I start it again.

 

i seafoamed my 81 today... i had the campus cops (who i know really well, and work for) show up with lights going cuz someone called in they thought something was on fire in the parking lot and the fire truck was on its way..

 

Just got done putting in the Seafoam.... and you can count me as another firm believer. I did it to my Taco that's got around 73K and my girlfriends Jeep that's got about 85K. On both I disconnected the brake booster line and poured from there. Did about 1/4 can while it was running, shut it down and let it sit for about 5 min., started it up and let it ran for about 5 min. then i poured in another 1/4 can and let that sit for about 25 min. Holy sh** i smogged out my whole apartment complex, both times. Then i poured a full can to a 1/2 tank of gas and drove for about 15 miles. Both cars overall, run a hell of alot smoother and quieter. Just make sure to pour some Seafoam into a small dixie cup or sorts cuz that stuff goes everywhere if you pour it straight from the can. This topic should be stickied!

 

I put a can of Seafoam through my brake booster a while back, and the smoking was very minimal. I did notice a slight increase in smoothness and performance. Recently I tried running it through my PCV system and it smoked like crazy (see picture).

http://photobucket.com/albums/e125/c...thIMG_0390.jpg

I must say it really improved performance this time. It now pulls better with the 33 inch mud-terrains than it ever did when I had my old 31" all-terrains on, and I haven't even changed the gears yet. Great stuff.

 

I haven't notice any improvements, but it only has 14,000 miles... smoked like hell though. I also had the spray sea foam and sprayed out the throttle body. After looking at both the PVC and brake booster lines, I chose the PVC since it introduces the sea foam by the throttle body, being able to reach the entire intake manifold.

 

how many people have had to change plugs. sounds like my 3.0 with now 149,000 miles could use it.

 

I do not recommend using this stuff in the crank case. It thins the oil and can cause seals to leak especially in older cars. If you think you must then drain it SOON. I woud use ATF instead.
When doing the manifold / vacuum routine even with the rpm's up be prepared for a CEL / misfire code. Check/clean your plugs afterwords also.

 

ditto on the crank case... i think the Head gasket blow when i added seafoam to the oil. now i ahve a bigger project on my hands.