seafoam question

oceanman · Post by **oceanman** » 10 Oct 2007, 22:40

i have a 94 855t with 215+k miles. i recently replaced the pcv. i was thinking about doing a seafoam treatment through the vac lines. when i had the intake manifold off it was crusted with black gunk. my question is- should i remove the catalytic converter so it doesn't get clogged? with all the build-up in the intake, i can only imagine what the rest of the engine looks like... i wouldn't want everything breaking loose and going right through the cat. if i need to pull it, how do i do it? has anyone heard of cat damage from doing this? i have heard it kicks out an awful lot of smoke. i have read the threads here and on vs and nobody really addresses it. any input/advice is appreaciated. thanks

lucast · Post by **lucast** » 11 Oct 2007, 01:09

I have yet to hear of anyone taking out their cat to do a seafoam treatment to be honest

Koan · Post by **Koan** » 11 Oct 2007, 06:54

I have done this on my 94 NA 850 and never had any indication of particulate matter being pushed out the exhaust. But smoke - heck yeah!

oceanman · Post by **oceanman** » 14 Oct 2007, 21:00

just wanted to let yall know...
i did the seafoam treatment on fri evening. there wasn't the billowing smoke cloud like i was expecting, but it did kick out a fair ammount. actually there was just as much smoke coming from around the turbo as there was from the tailpipe. anyone out there have any ideas what that means? it did, however, leave a nice black stain on the driveway. as far as any improvements- the engine isn't any quieter (lifters click), but it does accelerate a little better. i'm going to try it on my ranger soon. maybe that will smoke more- i've always put the cheapest gas in it i could find.

Koan · Post by **Koan** » 14 Oct 2007, 21:36

O'man

The normal Seafoam manifold treatment would not reach the lifters.

Seafoam actually suggests you pour some into the crankcase for that. I have been reluctant to do so, but maybe if it is fairly soon to the next oil change - still not real comfy putting it in the crankcase.

Smoke around the turbo probably indicate either an exhaust leak or a PCV leak and what you may be seeing is blow-by. Either way this deserves some attention.

Hope this helps

Koan

Koan · Post by **Koan** » 14 Oct 2007, 21:37

Is it possible you may have spilled some near the turbo??

Post by **mrreilly** » 14 Oct 2007, 22:09

Side question/
I'm wondering which line the seafoam is to be put in. Can anyone show me what where the seafoam is to be sucked in? I would like to do a seafoam treatment but want to make sure I'm doing it right...

Post by **jtp** » 15 Oct 2007, 14:29

I just did a seafoam treatment on my ancient Oldsmobile cutlass ciera a few weeks ago and I think we just put it in a large vacuum line that went from around the throttle body to who knows where (I'm not too careful with that car 'cuz when it breaks I'll have an excuse to get another volvo). I think I remember reading on the back of the can that you can put it in different places and it will clean different parts. The results for my cutlass were great though, it runs like a totally different car.

Post by **jtp** » 15 Oct 2007, 17:10

mrreilly, read this http://volvospeed.com/vs_forum/index.ph ... opic=20144

waynej · Post by **waynej** » 17 Oct 2007, 18:13

Has anyone tried the Seafoam transmission treatment?