a link to a thread on a great forum that deals with this issue

 

There has to be some vacuum if the engine is running...............

 

Well, last week I bought a can of this seafoam for my 3.0. I ran a 1/3 of the can through the pcv hose and put the rest into the tank. Waited about 10 minutes and started it back up. It blew some smoke but wasn't running very well after. So I figured that it was just burnning some of that junk off and didn't worry to much about it. A few days later it was still running like crap and seemed to be getting worse. I was like oh no wtf did I do. So I pulled all the plugs, just repaced them 1,000 miles ago, they still looked new, checked for any loose vacum lines, and replaced the dirty air filter. Still ran like crap. I then decided to give it another dose of the seafoam. Tonight, working outside in the dark, poored some more down the pcv hose. I then saw that the pcv hose has a few cracks. I don't think anyone has ever been so happy seeing a cracked vacum line. Right now I am currently putting some Epoxy to it for a temporary fix. Also something I didn't see before is that it was missing the clamp that goes on the pcv end. The pcv is so hard to see on the 3.0 and it was very easy to miss that clamp. Just wanted to add this info incase someone experiences similar problems.

 

Hey imagine we all metup lets say oh 30 4runner and we all did seafoam treatments i wonder how much smoke we can kick out? LOL..


Yeah well i finally did the seafoaming i ran it through the brake booster line i let it sipped the seafoam from a 1/4 styrofoam cup. I didnt really turn off the runner but when i actually gased a lil thats when the smoke started to come out. Im thinking either that the my engine is pretty clean or I just didnt let it sit. Well I have 1 can and 1/3 can of the 2nd can Im going to use that 1/3 and let it sit for about an hour. Lets see if i can really eat up any crap that still in there.

 

I took off my intake plenum to install my SC this past weekend and it was spotless. Absolutely, perfectly clean. That's with almost 110k miles on it. I'll have to take some pics before I pack it up in storage...

 

I've tried this thing but no significant difference(2treatments) If anything it made my truck idle rougher. I still have the stuff in my gas tank, I'll wait until my next tank and see what happens with milege.

 

I was having some problems with fuel delivery to the engine when I came across this post about a month ago. I'm adding my experience to this already monsterous thread because I seem to have had a much different experience than anyone else here -- and one that has ended up costing me more money than necessary.

My situation is a little different, as I found out, than the ones many of you are describing. I, too, had some hesitation when accelerating and would get some rough idling at times, so I thought that similar symptoms called for similar solutions. I had two additional problems (one that I was unaware of) that made using Seafoam a bad choice.

First, after doing six treatments, each with worsening results, I took it to my mechanic. His first assumptions was that I had one or more fuel injectors that were beyond fixing -- even with the almighty Seafoam. Turns out he was right -- one was nearly plugged and one was cracked. Six new injectors later and I was on the way to a better running engine, but something was still wrong. The egine appeared to be "missing" a little bit and I had a bit of a tick upon acceleration. The spark plugs were next to go, and even though I had replaced these less than 3,000 miles ago, they were all fouled and sooty. No doubt a result of the gunk getting burned up as the result of the Seafoam induction. A new distributor cap and six new plugs later, it was still running like crap. In fact, I drove it home and eventually the check engine light went on. Back to the mechanic...

Here's where my story and experience takes a turn from the rest of you who have posted. Lets say the intake wasn't just "dirty" when you did the Seafoam treatment. For the sake of argument, lets say some dumbass put WAAAAY too much oil on his K&N filter when he cleaned it just before these problems began. And lets also say this same ignoramous continued to drive it like this until the filter stopped dripping on it's own about a week later. It's safe to assume in such a scenario that a whole bunch-a-gunk got sucked into my...errr, that idiots MAS, throttle body, and intake manifold. Sadly, I am the idiot who caused the problem mentioned above.

When I started investigating what might be wrong, one of the first things I did (pre-Seafoam treatment) was clean my throttle body. As expected, it was filthy and coated with any oily grim. I cleaned all of this as much as I could and shined a flashlight into the intake. The was literally a pool of sludge at the bottom of the intake just sitting there floating around. Instead of taking off the intake and cleaning it properly, I decided to let Seafoam do the work of cleaning it out.

Not sure why I thought it would be a simple steam-cleaning operation, but in retrospect, that was just waaaay too much gunk to try to suck through the system. The end result is that I completely burned this gunk onto two valves to the point that they were sticking and not operating properly.

This product may be fine for normal cleaning of the air intake, but it seems to me in retrospect that the better way to clean the intake is the old fashioned tedious way -- by hand. Granted, mine is an extreme case of gunk in the intake (and an extreme case of stupidity on my part), but how much of that crap do you want going through your whole system? My burnt vavles are probably a worse case scenario, but is it worth the replaced spark plugs and O2 sensors some of you have experienced? Not in my book.

Ed

 

I did the seafoam on my 4Runner and it seems to be idleing a little smoother. I decided to do it to my dad's 96 4Runner and was putting the seafoam in and turned it off (to let it sit for 15 min), it kept running. I turned the key back to on and tried to turn it off again and it still dieseled. I turned it on the last time and reved it for a second then turned it off. I let it sit for 15 minutes and it started back up. Rev'ed the smoke out and it seems to be running good now. The dieseling kinda freaked me out!

 

Okay first of all i read every single thread in this forum and figured i HAD to try this on my 88 toyota corolal FX. My car is carburated and its been used abused and neglected in the past by its previous 4 owners. I chose to suck in the sea foam from the pcv hose. The first time i took the pcv hose out of the top of the engine with the pcv valve still in it..it had a strong suction...so i sucked in 1/3 of the can very slowly. I turned off the car and let it sit for an hour and a half. Started the car up and NO SMOKE AT ALL. wats up with that? Then the next day i did the same thing but sucked in half the can very slowly from the pcv hose WITH the pcv valve off this time. I turned off the car and let it sit for about 20-25 minutes. I started it up again and STILL NO SMOKE!! Could this be because i just went on a 1000 mile roadtrip with it about a month ago (would that have got rid of all the carbon deposits thats why theres no smoke? )
Would i see smoke if i poured the sea foam down the carb throat instead?

 

Okay first of all i read every single thread in this forum and figured i HAD to try this on my 88 toyota corolal FX. My car is carburated and its been used abused and neglected in the past by its previous 4 owners. I chose to suck in the sea foam from the pcv hose. The first time i took the pcv hose out of the top of the engine with the pcv valve still in it..it had a strong suction...so i sucked in 1/3 of the can very slowly. I turned off the car and let it sit for an hour and a half. Started the car up and NO SMOKE AT ALL. wats up with that? Then the next day i did the same thing but sucked in half the can very slowly from the pcv hose WITH the pcv valve off this time. I turned off the car and let it sit for about 20-25 minutes. I started it up again and STILL NO SMOKE!! Could this be because i just went on a 1000 mile roadtrip with it about a month ago (would that have got rid of all the carbon deposits thats why theres no smoke? )
Would i see smoke if i poured the sea foam down the carb throat instead?

 

since the thread is so long, might I ask somebody to make one good post to include only the steps. It's seems that there has been alot of trial and error type stuff post but not a list of what and where to put the stuff. If there has then I be sorry, just that sifting through 10+ pages to get the info is tough.

Here's what I did:

1. With engine running, suck 1/3 can into into via PCV
2. Shut off engine
3. Sit for 15 minutes
4. Start engine and blow out white smoke

Here's what I haven't done but I think this is what I gathered from the thread so far:

1. Dump remaining 2/3 can and 1 more can into gas tank
2. Dump 1-2 cans into crank case via oil cap (? not sure)
3. Run for around 500 miles
4. Change oil

Is this right? If not can someone make one big list out of it?

 

good point keisur...

1. Buy 3 cans of Seafoam, an Oil Filter, and 6 qts of your favorite flavor of oil, and make sure you have less than a half-tank of fuel in your gas tank
2. With engine running, slowly pour 1/3 can into intake plenum via PCV hose
3. Quickly shut off engine
4. Sit for 30 minutes
5. Start engine and blow out white smoke
6. Repeat steps 1-5, but waiting only 5 minutes this time
7. Dump 2 cans into gas tank (for 1/4 tank or less, 1-1.5 cans is enough)
8. Dump remaining 1/3 can into crank case via oil filler cap
9. Drive to gas station (~10 miles) with heavy throttle & high RPM's to clean injectors
10. Fill up tank and drive home (normal driving)
12. Change oil and filter

also posted here...
https://www.yotatech.com/forums/show...982#post442982

 

does anyone know if i can use the trans tune seafoam on my automatice transmission and the just flush the fluid out without changing the filter and without getting the filter clogged up. I wanna do this cause i just changed the fluid and filter about 5000 miles ago but my trans is slowly dying and its very dirty with a bunch of little metal pieces floating around i bet

 

does anyone have a good pic of the pcv hose? i just want to make 100%, and i mean 100% sure i'm using the right hose. i've seen the pic from bamachem, but just want to make sure. thanks, dd

 

that sounds pretty funny! dirk diggler wanting to see pics of a hose. haha.

 

just because i have a big wang doesn't mean that i don't mind another big hose. anyway, just wanted to make double sure, but did it anyway. not that impressed, but then again, i am dirk diggler and not much would impress me.

while my hand is sore from holding the pliers for that long, i got a measly puff of white smoke. did it again, same. did about half a can, the rest in the tank. we'll see how mpg improves. i may be 'quieter' but thanks to bama, an easy and cheap one to do, so can't hurt. love, dd

 

i lost mpg... did anyone else notice this?

 

I didn't lose mpg, but I didn't gain any either.

 

yeh, mine dropped a bit. but i'm thinking i may need to cycle a few tanks before a good baseline is developed. engine 'sounds' great though, never had it this smooth, but kinda bummed about the mileage for now. dd

 

My truck has a hesitation and stumbles like hell on acceleration and I used Seafoam tonight and it seems to run worse. added the 1/3 can into the pcv valve hose going into the intake and I put about 1/2 of that into a 1/2 tank of unleaded plus. let it sit for 5 minutes...noticed after I started it up it smoked a little for about 10 seconds and stopped.