the brake booster is VERY easy and you just pour it in slowly just enough so it gets sucked in and when the engine feels like its going to stall out give it a second and it will come back.

 

Where do I find the brake booster??? ya I know I'm stoopid

 

The surgeon's general warning is to not attempt this if you can't find a vacuum line, or even the brake booster, on your own.

 

lol...that's why I'm holding off until I get a good visual confirmation first (i.e. picture)... I'm a newbie, but I at least have some common sense

 

Why the heck are you guys using that massive brake booster line? First of all, you are creating a much bigger vacuum leak than necessary. Second of all, the small vacuum lines will suck more than enough MMO or Seafoam to stall the engine if you don't let up or rev it. I used one of the small vacuum lines last time I did it and everything worked perfect. It's like you guys are using a 3" mandrel bent pipe to transfer the exhaust of a lawnmower engine. Geesh.

 

 

Yeah, I set up until 1am last week reading that thread. I went out and got a 1 foot piece of 3/8 tubing that I'm going to attach to PCV line to make it easier. I'm also going to measure out 1/3 can like you said so I know exactly how much to put in. I'd be afraid of letting it skim off the top. How close do you let the hose get? Would you have as much control? Also, a buddy suggested putting a funnel (even though we probably won't need it because of vacuum) and just pouring a very little bit at a time so we don't hydrolock. I too am afraid of the brake booster line because it's bigger.

Anybody see any problems with what I've got here? Let me know. We're probably going to try it later this afternoon so if I'm doing something wrong – LET ME KNOW!!

 

Just don't fill up the funnel. Cuz, it'll start to bog down, and you won't be able to get that liquid stopped without spilling it everywhere. But if you need it cuz you have a hard time pouring, just pour in nice and slow and don't let the funnel build up with fluid.

 

you dont need a funnel if you use the brake booster vaccum line...its big enough that it will suck in without spillage.


if you pour it slow its not going to hydrolock...you have as much control as you want

 

I did mine this morning (used the hose below the 3 little hoses ). Poured it into a funnel very slowly and it sucked it right up, no problem...smoked a little while, then cleared up, and now seems to run a little smoother...nothing drastic but noticable. I'm going to give it a second dose tomorrow and let it sit a little longer; we'll see how it works... thanks for your help all

 

Can someone post a picture on where the PCV hose is for a '97 4Runner?

Thanks

 

So, Techron or Seafoam, sounds great. I would like to run either through my 1987 Toy 22ret. My concern is the turbo. Will this stuff actually remove the gunk in the engine and then send the so called gung right into my turbo and screw it up? Just asking. Would love to hear your input on this.
My truck has 170,000 miles and is running great but gas mileage sucks. Dont know exact mileage due to my 33's.
Thanks JMach1

 

well if it comes out the exhaust, it'll go right into the turbo. so you will have crap going into the turbo, but i can't say if it'll screw up the turbo or not. i don't know if what comes out is just soot-like particles and just blow through, or if it's still pretty sticky and will stick on the turbine. i guess if you really wanted to you could bypass the turbo temporarily, but that sounds like a lot of extra work to me.

 

I put about a 1/4 of the can of Seafoam through one of the small vac hoses, exhaust smoked like hell. Let it sit for awhile in the engine started it again and again it smoked like hell. The idle increased and the engine smoothed out.
Drove it 3 days later, no smoke seemed to drive about the same. But when driving up I70 into the hills, it would bog down when the turbo would kick in. Pulled over and adjusted the timing on the side of the road multi times with engine running slightly better but the gas mileage went to hell, I used a full tank of gas and only drove it about 80 miles that day. Got home and actually used a timing light with the jumper in place at 5 degrees. Could the Seafoam actually clean the engine so much as to make the timing be off? I dont know.
JMach

 

I have a 2002 4Runner and was really concerned about putting this stuff in because of a few horror stories I've heard. Stuff like hydro lock is nasty because it ruins your motor. But after all the benefits, I took the plunge and added it into the pcv valve.

My Runner has 48k miles and the smoke cloud that came out was incredible...white bad smelling smoke poured out of the tail pipe! The idle is scary smooth and acceleration has improved also...can't wait to see if my mileage goes up. Next is the wifey's Jeep Grand Cherokee!

This stuff rocks. Do it right and the benefits are amazing!

 

Let me clarify what I said in my last post. I didn't add the Seafoam to the pcv valve, but slowly poured it into the vacuum line that leads to the intake. Just unplug that line from the pcv valve and slowly pour it in. It helps to have a pliers on the hose to keep the idle higher. Pour it in slowly and let the vacuum suck it in and atomize it. The valve is very easy to reach on the 3.4: on the left valve cover. Seafoam works!

 

found this pic of the PCV valve on a 3.4 hope it helps some people


Edit, Yes I know this is an old post but I was searching and found a lot of people asking for a picture, I found this one and figured it might help people who are searching

 

Unless I missed it, this hasn't been mentioned. It's very possible for the carbon buildup that is being dissolved and blown out the exhaust to foul your O2 sensor(s), usually the dowstreams get it worse. Which affects gas mileage and everything else the that has to do with A/F ratio.

And old trick to avoid fouling the expensive O2's, it to screw a spark plug into the bung while you're doing your smokey driving right after the treatment. Obviously you can really only do this with the downstream, cause vehicles don't hardly even run without an upstream. At least pull the O2's out and clean them off afterwards. I wouldn't ever do a treatment like this and NOT clean the O2's after. DRY clean them....no liquids or cleaners. Soft toothbrush and compressed air only.

 

so on a 98 4cyl would the best place to put it be in the pcv valve or another vacuum line? and I know this post is super old.