diverchris

Hello,
I was wondering if any one has a DIY for the vacuum line SeaFoam treatment for an IS250, with photos or video.
Thank you

Denver

iTrader: (13)

gotta have the tools to do it.... ill take a pic of what it looks like later

LexoticJ

iTrader: (5)

hurry up denver your slacking!!! lol

pmanliu

iTrader: (4)

Suck it into the engine via the brake booster line. Not an IS but you can find this in the engine bay on the driver's side



no special tools needed. Just pour the seafoam into a cup and suck it through the brake booster line. Theres 2 brake booster lines, one that sucks in, and one that blows air out. You want to use the one that sucks in. Afterwards let the engine sit for ~5 minutes then start it up.

I have ~40k on my 09 IS and barely got any smoke. Might try it again, but was surprised it was relatively clean. Did the same thing on my 08 FX35 with 50k and got some decent smoke (video below)

Slammer1

First off, I would like to say that I really like the way your FX35 sounds. Now for a quick question... I've run Seafoam in the tank of my 350, but never done the vacuum line method. In your instructions, you say that you let sit for five minutes and then crank it up? Are you pouring the Seafoam into the vacuum line with the car cut off? I always thought this was done with the car running.

pmanliu

iTrader: (4)

Thanks Slammer - I typed my initial post in a rush so left out some details but thanks for pointing that out.

I pour seafoam into the vacuum line with the car running. As the car sucks the seafoam in, it will stutter and come close to dying. After you finish sucking the sea foam in, then shut off the car and wait 5 minutes before starting it back up.

I read online that if the car doesn't die while it is sucking in sea foam ,then its just burning it up right away (which is why i think i didn't get a smoke show). Next time i'm going to suck up 90% of the seafoam without letter the car die then on the remaining 10%, suck enough so that the engine cuts off by itself.

Let me know if any questions! Thanks

sutekidane

iTrader: (1)

I did this a few months back to my 350, twice actually just for the kicks. For the 350, since it has dual-injectors and is not affected by the carbon-buildup problem like the 250s the benefit to doing Seafoam is really minimal. Also, don't go overboard with pouring the stuff into the vac. line. There has been cases where people hydrolocked their motor thinking the more the merrier.

The post from a few months back:
https://www.clublexus.com/forums/7694322-post2.html

myculito

iTrader: (1)

All this sucking talk has me confused!

You're suggesting the brake booster line, but sutekidane shows it going through the vacuum line.

Which one is it supposed to be? ( I have an IS350 if that matters)