How to seafoam!

[99COOP]

holy sig pics, cut that bad boy down.

 

[Davyboy]

Well I'm gonna see what I can get along the 'seafoam' lines tonight, I'm in alberta canada, dunno if they've come this far west yet...
Oh well will be finding out soon, 419,000km on my engine, lets see what I can clean out LOL

 

[992dr]

When you guys say "let it sit". Do you mean sit at idle?
From reading around, I'm going put it in my gas tank.
If you put it in your gas, will it smoke until you use that tank? Or, does it only smoke when you suck it through the vacume line?

Thanks

 

[destroyer1362]

I turned my truck off for 5min after sucking it through the pcv valve.
If you put it in the gas it won't smoke. I did notice that it smelled a little worse from having the stuff in the gas tank though. At least I think it did.

 

[riviera rider]

im definetly doing this to my 99

 

[maniacmurray]

Ok guys! I just bought a '99 Yukon with a little over 200k miles on it and I plan on doing the Seafoam treatment to it, gas tank, oil and vaccum line! Can anyone with the correct procedure please let me know how to do it? It has a 5.7L Vortec in it, 2wd, automatic. Thanks, Frank!!!

 

[txhoescrapin]

Read page 1.

 

[maniacmurray]

Yeah I did read page 1..... I was asking if someone knew the proper procedure? First off I know that you are suppose to let it sit for about 15 mins Before restarting it and also I'm pretty sure that you don't floor it or goose it while the vaccum line is sucking up the Seafoam! If I'm not mistaken you are suppose to keep the engine above the stall point so that it doesn't die, then after sucking up the Seafoam you turn it off, hook up the vaccum line back to it's proper place then after 15mins of sitting, adding to oil and fuel tank you are suppose to start it back up and go for a (Spirited) drive for at least 30 mins to blow out the soot! What I am wanting to know is if the line off the brake booster is the correct vaccum line or is there another line you are suppose to use on a '99 Yukon w/a 5.7L Vortec ???

 

[Chrislovessushi]

could anyone post a picture of the correct line? I have a bottle of seafoam sitting around. I glanced under the hood but nothing really stood out. Also, since I have the 5.7, should I just dump it in my tank and not even bother with the vacuum?

 

[Chrislovessushi]

Alright...I figured it out. This video is pretty cut and dry.

http://www.youtube.com/watch?v=4iLDzz65jck

I did like him and put half in the intake and half in the tank. Waited 20 minutes...then pissed my neighbors right off. HUGE clouds of smoke.