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DIY: SeaFoam

Old 30-Nov-2004, 06:47 PM
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DIY: SeaFoam

This was performed on my 1998 Honda Civic Si with 150,000k’s, but the procedure should be the same for all Honda’s.

Tools Required
- One can of SeaFoam
- Pliers
- Funnel
- A friend (optional)

Make sure your car is in a well-ventilated area. Turn on your car and let it warm-up for 5 to 10 minutes. After you do this check your rpms to make sure they have dropped to normal level. Turn off your car.

Now that you have let your car warm up you need to disconnect your brake booster line. Use a pair of pliers to loosen the clamp before you pull it off. I found it easier to disconnect it directly from the intake manifold because of the tight confines of the area around my brake master cylinder.




Now that the clamp has been loosened you can pull the line off. It might be on kind of tight. I had to use a pair of pliers to get a better grip. Don't use WD-40 or anything to loosen it up because it can get sucked into your engine. Also once you get the line loose don't let it suck any dirt up.

I used a short piece of ˝” tubing and a small funnel. Slowly pour 1/3 of the Sea Foam down the funnel. You will hear your car's idle change during this time. A friend may come in handy to give it some throttle, but my car didn’t stall.


While you are pouring the Sea Foam in you might notice some thick exhaust coming out and the revs dropping almost to the point of stalling. This is perfectly normal and means it's working. Not all car's smoke and some won't until you start driving a bit.


Once you have used 1/3 of the Sea Foam turn the car off and replace the brake booster line. Let it site for another 5 to 10 minutes. I added the rest of the SeaFoam to my crankcase (oil) and the rest in the fuel tank. Now start the car back up and take it for a spirited drive for 5 to 10 minutes. You will notice lots of exhaust coming out again. Once it has stopped coming out you are done. My car didn't really smoke too much, only when I first started it. During the drive, it smoke for a few blocks, but that's it. I maintain car car religiously, so maybe it wasn't that dirty.

It is also recommended to do before an oil and spark plug change soon after because this procedure may cause both to get dirty.

Good luck.
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Old 30-Nov-2004, 07:05 PM
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I personally just disconnected the hose from the pcv valve to the IM and used the end from the PCV valve to suck the seafoam into the IM. If the car starts to bog down i would recommend backing off of pouring it in so it comes back up to normal idle.

I would recommend 1/3 into IM, 2/3 into oil and 1/2 to a full can into gas tank. I would do the oil when you do an oil change and gas tank when you fill up next at the pump.
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Old 16-Mar-2005, 07:49 PM
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My Goodness I just did this Seafoam **** today and after reading all the praise the hype is true! It's like night and day.... Used two bottles ... half and half on my Fuel/Oil and a 1/3 of another bottle in my Intake Manifold. The car is abosultely silent at idle,
V-Tech engages a lot smoother and quiter... before it really rumbled loud, but this sounds more refined now. I cannot believe how faqking amazing this product is .... I "Swear" By it literall.. Holy Smokes <---- Literally
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Old 16-Mar-2005, 07:54 PM
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holy smoke... lol
never seen this stuff done, must read more about it...
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Old 03-May-2005, 11:33 AM
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^^^^

that pic looks like your doing a burnout....lol

at the parts store where I worked we sold it and we put it in for customers cars in the driveway....everyone was really surprised on how well the product worked

my boss at the time had a 2001 Civic Si, and even though the car had very little milage on it....tons of black smoke came out the tailpipe
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Old 20-May-2005, 04:05 PM
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this might sound weird,but i never heard of this before this thread, what does the sea foam do exactly?
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Old 20-May-2005, 05:52 PM
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Originally posted by NightRyder
this might sound weird,but i never heard of this before this thread, what does the sea foam do exactly?
It cleans all of the carbon, sludge and other crap out of your engine. It's basically a very concentrated fuel system cleaner and oil treatment in one.
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Old 21-May-2005, 09:56 AM
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can you get seafoam at CT? or where should i be looking for it?
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Old 21-May-2005, 10:24 AM
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ya where do you find this stuff
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Old 21-May-2005, 01:11 PM
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Carquest is the only place I was able to find it. $14 for a bottle.
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Old 25-May-2005, 11:16 AM
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I bought mine for 10 bucks a bottle in Scarborough. Did mine again last night and now the CEL is on lol. Need to solve that problem.
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Old 25-May-2005, 11:50 AM
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that's not good... now i'm hesitant...
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Old 25-May-2005, 12:09 PM
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It didn't go on the first time. But I didn't pour any into the vacuum line that time though.

The O2 sensor might have picked up something? I am going to unplug the battery and see if that does anything.
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Old 25-May-2005, 12:12 PM
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Originally posted by Nova_Dust
I bought mine for 10 bucks a bottle in Scarborough. Did mine again last night and now the CEL is on lol. Need to solve that problem.

i had the same problem, when i pulled the code it was the VSS
my speedo had been messed up for months, but the code came up right after i seafoamed
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Old 25-May-2005, 12:23 PM
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Nova, re-check that your gas cap is on tight. OBD2 cars regardless of brand, are notorious for this.
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Old 25-May-2005, 01:29 PM
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Ok, will do.
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Old 26-May-2005, 09:19 AM
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Pulled the battery positive ternimal, solved it.
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Old 31-May-2005, 08:10 PM
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has anyone had any negative reactions after using this? especially on a high milage motor want to find out before i use it
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Old 31-May-2005, 08:25 PM
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Try a search on Honda-Tech. There are ALOT of reviews on there. Not too many on here because so few have tried it.
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