i just seafoamed my 00 4.3 and if anybody has heard of this you know whats suppose to do.. problem here is that mine didnt smoke like it should have. after i poured it into the vacuum line i noticed a wet spot behind my tail pipe. run it down the road and back and nothing happened..

 

did you follow the directions properly, once you are almost there with pouring all you need in the vac line (brake booster vac line btw) you pour enough in there to kill the engine

 

ive done it before. i looked up on youtube on what hose to pour it in first to be sure. my wife metioned a vacuum leak but wouldnt i see the smoke come from a hose under the hood?

 

I have used seafoam before and did not see the white smoke like on the youtube video.
I put a bottle in the gas tank and a bottle down the vacume booster line and no white smoke.

 

Maybe you just have an incredibly clean engine. Another stupid question, but when you got it started again, did you leave it parked and rev it to 2k rpms?

 

yea revved it pretty high

 

That is odd than LOL

 

From what ive read I believe that when you use the vac line method it dont get to all cylinders, just the back 2... I think. Seafaom makes a spray that you can spray into the intake from the throttle body. You have to email seafoam to get a special straw, but they sent me 4 for free. You spray it and let it sit for a few minutes and start it and run it. here is a link to the website. Sea Foam | How to Use Sea Foam Spray | General Content - Sea Foam Spray hope it helps

 

Or you just unplug tha MAF sensor and the MAP sensor from the intake then take the intake off the throttle body, start it then SLOWLY pour some down the throttle body.