Can of Seafoam sucked into the intake through a vacuum hose. Let it sit for 15 minutes. Blow it all out with some high revs. Done!
Repeat often
Hey guys, just ran across this post and I wanted to add something... something kind of long.(as someone that has had great experiences with valve cleanings) This is absolutely the correct method guys, but do NOT BUY THE CAN!!! Well the other thing comes in a can too but its a liquid you can pour instead of a spray. If you live in California, REALLY DONT BUY THE SPRAYS! They are a diluted version of the real stuff. However, even in California, the liquid Seafoam yields much better results.
Like 2for1 says, you need only to unplug a vacuum hose from the intake manifold. Alot of older cars would have random vacuum ports on the intake manifold that you could access and plug your own vacuum hose into it.
Try to choose a vacuum hose that does not go directly to a sensor if you can find one.
Its MUCH MUCH easier to do this with two people& the other person doesnt even have to know anything about cars to help.(could be your wife even)
With an already warmed up engine, have them bring your RPMS to 2K. Open your can of liquid seafoam and dip the vacuum hose slightly onto the surface layer of the liquid in the can. This should take you 10-15 mins to slowly suck up all of the liquid in the can. Anything less and you sucked it up too fast(probably will still have good results, but not best results). If your engine stalls you are forsure doing it to fast. TAKE IT SLOW, trick is to barely allow any air to flow through the hose& just a small addition of the seafoam to be added into the air/fuel mix. YOUR ENGINE WILL NOT BLOW UP FOR REVVING IT AT 2K FOR 15 MINS!! If it did, it was on the way out forsure. Once its done, do not shut the engine off. Just return the vacuum hose setup to how it was before you touched anything& rev at 4k with occasional throttle snaps until no more smoke is coming our of your exhaust.
*BIG NOTE*
The more carbon build up you have, the more smoke will come out. I recommend doing this towards the evening once its getting dark because you WILL leave a MASSIVE cloud that usually covers the entire neighborhood& may even pass for a fire ending in firefighters showing up. Not that happened to me or anything.
*2nd BIG NOTE*
Do your best to pick a vacuum hose that is closer to the middle of the intake. Helps(HELPS) to spread the product evenly through runners& it away from sensors.
I will be cleaning my Throttle Body soon& was going to do a valve cleaning service to go along with it and thats how I stumbled onto this thread. I will post pics of how I chose to do it.
Thanks for reading, happy cleaning!
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