You've been doing it wrong. Seafoam injection port - Toyota 4Runner Forum

KU_MechE · 02-19-2011, 10:49 PM

So, i'd like to clarify, the improper way to run Seafoam through the car's intake system is to use a vacuum line that only feeds one cylinder. If you used the brake booster vacuum line, you've only been feeding a single cylinder.

In this picture below, you can see the brake booster vacuum line directly feeds a single runner (either Cyl 3 or 4). This means your Seafoam is not at all distributed to any other cylinder.

In this picture below, you can see the PCV vacuum port feeds the plenum before it divides into the 6 runners. While you'll never get perfectly even distribution, hopefully some of your Seafoam gets to each runner.

NickF · 02-19-2011, 11:05 PM

I guess I need to buy some seafoam

BigFishAllDay · 02-20-2011, 11:07 PM

Bump, simply for good info that needs to be seen.

KellyJ · 02-20-2011, 11:09 PM

But oh what does a man to do with a 2002 engine?

MTDewX8 · 02-21-2011, 01:43 AM

I hear about this Sea foam stuff and really have many questions.

but I will read and search to save you guys the headache of explaining something that has already been talked about.

bump

98_4runnerSR5 · 02-21-2011, 01:51 AM

Quote:

Originally Posted by troyboy162

whos been using that one? its the first ive heard of it and it would seem obviously the wrong one to use

If you're referring to who's been using the brake booster line then almost any person who's done seafoam on their 4runner has been using it. It's the recommended line to feed it through.

Quote:

Originally Posted by MTDewX8

I hear about this Sea foam stuff and really have many questions.
but I will read and search to save you guys the headache of explaining something that has already been talked about.

Good idea. I have used it plenty of times, no problems. Seems to do it's job and it's only $8 a can so it costs hardly anything. I'd recommend trying it if you haven't before.

KU_MechE · 02-21-2011, 01:56 AM

Quote:

Originally Posted by troyboy162

whos been using that one? its the first ive heard of it and it would seem obviously the wrong one to use

I've seen it recommended far too often:

for those who have used SEA FOAM?

The hose to seafoam?

Seafoam

Seafoam

ChildrenOfBodom · 02-21-2011, 02:20 AM

I did another treatment today, and another bottle in the gas tank for good measure, though I do have a different motor.

RonMAIDEN · 02-21-2011, 03:43 AM

If you Seafoam it really good once or twice then just use a good fuel system cleaner like BG's 44K then you shouldn't need to Seafoam it ever again. Seafoam is good for engines that have a questionable past or have been neglected but if an engine is cared for regularly from the start then Seafoam shouldn't be needed.

ChildrenOfBodom · 02-21-2011, 03:54 AM

Quote:

Originally Posted by RonMAIDEN

If you Seafoam it really good once or twice then just use a good fuel system cleaner like BG's 44K then you shouldn't need to Seafoam it ever again. Seafoam is good for engines that have a questionable past or have been neglected but if an engine is cared for regularly from the start then Seafoam shouldn't be needed.

My engine = neglected for the first 142k of it's life...

BG44k is my friend

BTW: MY 2,000TH POST! WEEEEE

Satter · 02-21-2011, 05:46 AM

Quote:

Originally Posted by RonMAIDEN

If you Seafoam it really good once or twice then just use a good fuel system cleaner like BG's 44K then you shouldn't need to Seafoam it ever again. Seafoam is good for engines that have a questionable past or have been neglected but if an engine is cared for regularly from the start then Seafoam shouldn't be needed.

The more research I've done on engine care the more Ron's words are true. Of course there are those few exceptions where you can do everything right and engines still breaks down. Until recently I thought it couldn't hurt to use Seafoam. But, if you use it regularly, like once or twice a year, I'm not so sure.

I'd be curious to know if Seafoam is considered an engine treatment? I've often heard that the more an engine treatment is used on an engine the more likely the engine becomes dependent on it.

99runnerwa · 03-20-2011, 05:56 PM

I had a problem when I used sea foam. I used the pcv valve and slowly let it suck up 1/3 of the can, when I tried to shut the engine off with the key it continued to diesel for a minute or so. Disk do something wrong or is this normal? I have the 3.4 in my 99 orunner

Baja Runner · 03-20-2011, 06:15 PM

Its somewhat normal.

99runnerwa · 03-20-2011, 06:25 PM

Quote:

Originally Posted by Baja Runner

Its somewhat normal.

Thanks. Good to hear I didn't kill my engine

Nelsonmd · 03-20-2011, 07:18 PM

Quote:

Originally Posted by 99runnerwa

I had a problem when I used sea foam. I used the pcv valve and slowly let it suck up 1/3 of the can, when I tried to shut the engine off with the key it continued to diesel for a minute or so. Disk do something wrong or is this normal? I have the 3.4 in my 99 orunner

Same exact thing happened to mine.

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