Seafoam where do you pour it?

Goddard-MarkVIII

Goddard-MarkVIII

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I've been having a pretty bad problem with my engine stumbling when warmed up and want to clean it out using some seafoam as I've heard its a good idea. I have a 1997 mark and want to clean her up. Which vacuum line do I pour the seafoam in and do I have to do any tuning afterwards because of the seafoam?
 
Next to the dip stick that is behind the steering wheel!

Actually when looking at the engine its in the top right corner of the car, and the line is coming off the left side of the booster going to the intake manafold.
 
Goddard-MarkVIII said:
Any chance at gettin a pic? I'm slow....need pictures. hahah
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I wished I knew where my camra's battery charger was
it should be right there in the box

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This is where you do it from. sorry if its bad quality, it from my phone

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This is were I do it from. just remove that and suck it through there
 
In a gen1 could I do the same thing through the vacuum line? I've only run seafoam through the gas tank would this be any diff?
 
Putting seafoam in a vacum line pulls it into the motor and it gets burned in the combustion chambers. What it is supposed to do is remove carbon build ups.
 
awesome you kick arse

I'll probably stick to the pcv since thats what the seafoam website says but just to clarify the brake booster line is a larger tube thats why its preferred?
 
It really doesn't matter what tube you use, the booster line is just very accesible on most cars, and does pull a lot of vacum. I bought a sweet funnel just for seafoaming cars, it go a super long taper that goes down to being thin enough to slide right into the hose.
 
You should pour the seafoam into the trash can. I have tried it before & I don't think it does much of anything. The smoke comes from all of the excess seafoam in your combustion chamber. I really don't think it's carbon build up that causes the smoke.
 
turborich said:
You should pour the seafoam into the trash can. I have tried it before & I don't think it does much of anything. The smoke comes from all of the excess seafoam in your combustion chamber. I really don't think it's carbon build up that causes the smoke.
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The smoke comes from the petroleum base in the seafoam plus some of the residual carbon that is 'paint stripped' off. Most it it is from the seafoam itself.

If you just suck it through without stalling the motor, you won't get nearly as much smoke. So there has to be some carbon that let's loose after restarting the car to get that much more smoke.
 
i bought my gen2 from an old lady who i dont think ever had the thing over 2000rpm... it would barely move when i first bought it. After the seafoam, it was 100% better; felt like a different car. I would say it works.
 
Thanks everyone went smoothly..didn't exactly smoke like I thought it was going to...didn't really smoke much at all actually.
 
when i seafoamed mine, i couldnt get the motor to stall like everyone says your supposed to do? it did smoke a lot though.
 
It's got a smoother idle and does sound a bit better if you ignore the misfire and what sounds like a clicking coming from the passenger side...kinda like this video on this thread http://www.lincolnvscadillac.com/showthread.php?t=41814 the you tube video...I got a compression test set although for some reason the damn hose doesn't want to screw in..Pretty sure its the right size check it out.

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Seafoam it a second time. My old one put up one hell of a smoke show the second time around after not a lot the first time.
 
On the bottle it says mix 50% fuel and i did that I'm wondering if everyone else did that or pure seafoam....I also only used about 1/4 the bottle since its pretty high mileage.
 
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