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Hi, I have a quick question, need a quick reply. I intend to seafoam the engine later today as my wifes car failed its smog by a small amount and I have 5 days to get it to pass. Anyway, I just want to clarify that this big fat tube is indeed the brake booster vacuum line. I know I need to run a third of the can through very slowly along with a third in the gas tank (not sure I will put any in the crank case)

Anyone used this stuff before? Anything to watch out for?

I have another issue related to this car but I should probably take pictures before asking, the air intake seems to be missing a section underneath the filter allowing it to suck in dirty air. I think this may have been what caused the previous engine to blow a massive hole in the block last year.

I don't drive this car very often so I don't pay attention to it, I think the owner before did many bad things to it.

Thanks a lot!

 
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Oh yeah, the car is a 98 civic LX, with a 97 civic LX engine in it now 1.6L.
Cheers

 
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i have done this twice with my 97 honda civic ex. its real simple if you watch a couple of videos on youtube. theres nothing really to watch out for. after you are done with the seafoam, keep pushing down on the gas pedal to get rid of all the dirty smoke from the exhaust. after you are done get an oil change one week later!!!

 
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Cool, thanks, to clarify, that is the correct hose to use right?
Thanks

 
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I believe that is the correct hose..

I Seafoamed my 2000 Civic today.. it smoked a little bit while engine was running and I was pouring 1/3 cup into the hose.

I then turned of car and put 1/3 in gas tank and the other 1/3 in crank case

I waited 10 minutes, turned on car and it didn't smoke at all.. weird since I saw all these videos online with massive white smoke

 
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Did this yesterday, through the brake booster hose highlighted, used a turkey baster to squirt the seafoam in which worked really well, went off without a hitch, changed the sparkplugs after and everything went ok.

(finishing thread because I hate it when you are searching for an answer and someone has posed the question you need the answer to, but its left unresolved)

 
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I know this is an old topic but I Seafoamed a couple different vehicles last year. Debate seems to rage on about this product.

Things to be careful of are.....

1 - Hydrolocking the engine by pouring it in the intake too fast
2 - it's alcohol so the rubber bits of your fuel system can be broken down by it. Mostly from using it beyond it's specs from what I've read.

I personally didn't have what it took to put it in my oil or intake. I just did the gas lines. I generally didn't see any huge changes. It'll dry moisture out of your fuel system and give you a bit of an octane boost but that's about it. Some people argue that the carbon that gets flushed just builds right back up again. Others say in older engines it can do damage (I'd say mainly because rubber breaks down as it gets old and the alcohol just pushes it over the edge). I dunno, I think too many people think or hope that is some sort of magic bullet for an old tired engine and it's just not.

 
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seafoam is awesome stuff and i have never heard negative effects. i use it every 5k miles on the old work truck. its got 315k on her. noticeable difference in power and fuel economy. also use it regularly on my gsr swap. if you do it right it will smoke hella smoke out the tail pipe. normally im 100% against additives but this one really does work.