C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

SeaFoam is amazing stuff....

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Old Apr 16, 2006 | 01:48 AM
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Default SeaFoam is amazing stuff....

After reading different threads about SeaFoam cleaner, I bought some at AutoZone today.... It made the car smoke, but not as much as everyone else on the forum said. So here's my question, When you pour it down the brake booster hose you have someone rev the engine to prevent it from stalling. Do you immediately shut the car off once its poured in? or do you continue to rev the engine to make the smoke pour out? (ie does this make the carbon exit the car faster?)
The can said to warm the car, pour it in, then shut it off... After 5 minutes restart the car.
Any thoughts?
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Old Apr 16, 2006 | 01:51 AM
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I just followed their instructions, hardl had any carbon to start with so very little smoke.
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Old Apr 16, 2006 | 02:06 AM
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Originally Posted by cuisinartvette
I just followed their instructions, hardl had any carbon to start with so very little smoke.
I had very little smoke too, but when I put the other half in my wife GMC Jimmy, it smoke like mad, so I let it run a little bit (maybe 2 minutes) and smoke just poured out (All my neighboors came out)...

I shut the engine off, then restarted it 5 minutes latter, some smoke came out, but nothing like before.....
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Old Apr 16, 2006 | 02:34 AM
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use it in the fuel ,,first
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Old Apr 16, 2006 | 02:56 AM
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i'd change the oil after using any kind of top-end cleaner.

i'm gona do the same down the road, and was thinking of using some motor flush at the same time, or the old quart of tranny fluid gig. but afterwards, i'm gonna run two quarts of the high mileage oil with rubber conditioners in it to stop the shock. if i use tranny fluid, this probably won't be necessary, since i believe it has rubber conditioners already in it.

i've been running one quart of the high mileage stuff for the past two oil changes, and it has loosened up the old, hard hoses running from the valve covers to the intake. i didn't run the stuff exclusively, because at full strength i've seen it rapidly tenderize old brittle rubber and cause it to split. the seals and such need to be coaxed back to life--not shocked.

also, lucas power steering treatment must have the same stuff in it, cause' it has started to tenderize the old stiff hoses running from my reservoir--while re-conditioning and swelling the leaking seals.

Last edited by parafrog; Apr 16, 2006 at 03:10 AM.
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Old Apr 16, 2006 | 06:45 AM
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The way I used it was to take the hose loose, start the car and then put the hose in the container of seafoam. This being sucked in so fast stalls the motor. Let it set for the 5 min. and then restart.
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Old Apr 16, 2006 | 08:42 PM
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Just used it in a car myself. I usually let it suck down half the can slowly then feed it faster until I stall the motor out. Then let the car sit for a bit.
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Old Apr 16, 2006 | 08:51 PM
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Does anyone know if this stuff is available in Canada?
I've never seen it.
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Old Apr 16, 2006 | 08:56 PM
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I saw this stuff at Autozone also. reading the label it indicates you can add it to oil or fuel? What is this stuff and what does it do? How can you add it to the oil and fuel.....???
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Old Apr 16, 2006 | 09:03 PM
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Should be 87 rag. I've used it for years on all my vehicles and boats. Boat motors especially 4,6 and 8 cylinders really carbon up if you do alot of trolling.One of my boats spit carbon onto the water-ugly, but not as bad as what it did to the transom-turned it carbon looking in color-that's when a friend told me about SeaFoam. Only he made a recommendation-and I've followed it. 1/2 in fuel tank, 1/2 through
vac. line, none in the oil-which was ok with me. Anyhow, the only thing C4 folks should know is it can TEMPORARILY mist the 02 sensors, setting an 02 code-not to worry, it burns off, disconnect battery-code gone. Also, I hold my RPMs between 1500-1800 while putting it through the vac. line, I use the brake booster line because it's easier (at least for me) than using the PVC line.
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Old Apr 16, 2006 | 09:07 PM
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Thanks Rick, I'll keep an eye out for it.

I was just on their website. Amazing stuff. It's like the Ginsu of engine treatments.
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Old Apr 16, 2006 | 09:24 PM
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I would be cautious while using the brake vacuum hose to suck it in. If too much goes in too fast it can hydro lock the motor causing bent rods.
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Old Apr 16, 2006 | 09:54 PM
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That's why you keep the RPMS high to prevent hydro lock.
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Old Apr 16, 2006 | 10:37 PM
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i saw this at autozone today but don't know what it does

so what is it supposed to do?
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Old Apr 16, 2006 | 11:24 PM
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Originally Posted by wht_slvr_86
i saw this at autozone today but don't know what it does
so what is it supposed to do?
It burns the carbon deposits off. I also smokes like H*LL.... Be prepared to not see you car through the smoke (I'm not kidding!!)
The smoke goes away in about 5 minute. My neighboor said he was about to call the fire department. I'm going to do it again in a week.

Check this thread http://forums.corvetteforum.com/show...hlight=seafoam for the smokey pictures....
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Old Apr 16, 2006 | 11:59 PM
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Originally Posted by CF6873
I would be cautious while using the brake vacuum hose to suck it in. If too much goes in too fast it can hydro lock the motor causing bent rods.
100%

Hold the can of seafoam up at a slight angle, and the runbber brake booster line next to it (facing vertically). Slowly tilt the seafoam, and the vacuum from the line will suck it out of the can without putting it in, get a slight stream going. and youll be fine. Nothing to it, really.
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Old Apr 17, 2006 | 12:03 AM
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Originally Posted by cuisinartvette
100%

Hold the can of seafoam up at a slight angle, and the runbber brake booster line next to it (facing vertically). Slowly tilt the seafoam, and the vacuum from the line will suck it out of the can without putting it in, get a slight stream going. and youll be fine. Nothing to it, really.

Quite the pro I see

Im about to run some through my car this week
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Old Apr 17, 2006 | 03:05 AM
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hmm gonna try that gm part # on my olds tommorow. it needs a tune up
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Old Apr 17, 2006 | 03:51 AM
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Originally Posted by Alvin
Just used it in a car myself. I usually let it suck down half the can slowly then feed it faster until I stall the motor out. Then let the car sit for a bit.

this is just about the proceedure listed on a can of gm, top end cleaner. i'm surprised the sea foam doesn't list the same.

here's the basics on the gm can:

warm engine
disconnect air system solenoid to divert air from converter
idle 800-1000
pour 2/3 without stalling
pour in balance fast-stalling, stopping once stalled
kill engine, let sit for 15 minutes
start engine, pour in remainder without stalling
run engine at high idle to blow out deposits
restore air system


someone on the forum recommended running two bottles. but as someone said here, it's probably best to wait a while to put in the second. if you did it the next day, the deposits might be still soft and easily be dissolved. if you did it the next week, deposits that were only loosened in the first application may have broken off--giving you a better shot at total success in the second application. it's a tough call on the time frame.

but it is most likely true, that if you got a ton of smoke on the first app., then a second is probably recommended.

you can raise your idle by wedging something like some folded paper between the throttle body lever and the stop to achieve the appropriate rpm.

before anyone asks, the air disconnect is probably to stop the cat from overheating--the stuff is full of naptha.

now i'm talking about the gm stuff, but the seafoam is probably built the same.

Last edited by parafrog; Apr 17, 2006 at 04:43 AM.
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Old Apr 17, 2006 | 03:30 PM
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Sounds good, gonna give it the trial run on the Ol' Pustang tonight. Shes pushin' 90k, and runs like a slug, so we will see.
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