Decarbonization question
Thread Starter
Melting Slicks
Joined: Dec 2006
Posts: 2,304
Likes: 101
From: Orange County California
Decarbonization question
I'm planning to use SeaFoam to help clean up some pinging, but have a couple questions. I've read a lot of the posts in here, but still don't know exactly where to feed the stuff into the intake. I've seen these photos: https://www.corvetteforum.com/techti...=212&TopicID=1 but can't tell. I don't want to mess anything up.
Anyone have any exact information or a picture of which line to pull?
Also, is the common agreement to put about 1/4 can into the gas tank and 1/4 into the oil? How long do you run it before switching out the oil and refilling the gas?
Thanks.
Anyone have any exact information or a picture of which line to pull?
Also, is the common agreement to put about 1/4 can into the gas tank and 1/4 into the oil? How long do you run it before switching out the oil and refilling the gas?
Thanks.
Racer
Joined: Feb 2006
Posts: 273
Likes: 1
From: Columbia Maryland
I'm planning to use SeaFoam to help clean up some pinging, but have a couple questions. I've read a lot of the posts in here, but still don't know exactly where to feed the stuff into the intake. I've seen these photos: https://www.corvetteforum.com/techti...=212&TopicID=1 but can't tell. I don't want to mess anything up.
Anyone have any exact information or a picture of which line to pull?
Also, is the common agreement to put about 1/4 can into the gas tank and 1/4 into the oil? How long do you run it before switching out the oil and refilling the gas?
Thanks.
Anyone have any exact information or a picture of which line to pull?
Also, is the common agreement to put about 1/4 can into the gas tank and 1/4 into the oil? How long do you run it before switching out the oil and refilling the gas?
Thanks.
I wouldnt bother putting the stuff in the oil personally...
In my previous cars I would put it in the brake booster line, the whole can actually. Never tried putting it in the gas tank.
As for the oil, I think it would flash out before it did any good.
Temporary Hold
Joined: Aug 2006
Posts: 7,711
Likes: 7
From: www.modular-concept.com www.flatoutimaging.com
I have done it three different ways. You can add it through the brake booster line as previously mentioned. I liked adding it through the PCV line going into the intake manifold right behind the throttle body. Just pull on the check valve and it will easily pull away from the vacume line. I used a longer skinny funnel (trans funnel) pushed into the fitting coming out of the intake. I had my neighbor keep the motor around 2-3K RPMS while I poured it in steady and slowly. I had him the shut off the key and preoceeded to pur in just allitttle more. I let it sit for about 30 minutes and then watched the smoke show.
I also used Sea Foam Deep Creep (Sea Foam in a pressurized aerisole form) I sprayed deep creep stright into the fuel injector ports after popping them out of the intake manifold. That seem to work O.K.
Anyways it made a major difference in my car.
BTW I also added it to my oil (crank case) and it didnt do anything noticable.
I also used Sea Foam Deep Creep (Sea Foam in a pressurized aerisole form) I sprayed deep creep stright into the fuel injector ports after popping them out of the intake manifold. That seem to work O.K.
Anyways it made a major difference in my car.
BTW I also added it to my oil (crank case) and it didnt do anything noticable.
Race Director
Joined: Jul 2004
Posts: 16,794
Likes: 62
From: Lake Havasu City, AZ
In the gas tank, it works like any other fuel system cleaner . In the oil it removes any internal varnish or sludge... Assuming you are using a synthetic like Mobil 1 your don't need it in the crankcase.
when used as described by FLATOUT, via the PCV check valve hose, it decarbons the intake, valves and heads.
when used as described by FLATOUT, via the PCV check valve hose, it decarbons the intake, valves and heads.
Melting Slicks
Joined: Oct 2006
Posts: 3,447
Likes: 6
From: Santa Maria, CA
I put seafoam in my crankcase (similar product to the decarbonizer/Gm Cleaner) when the oil was still somewhat honey colored near the end of my oil period. I drove it for about another 400 miles and then changed the oil. It came out black as tar.
You can't tell me it didn't remove sludge/deposits with such a drastic change in oil color in such a short amount of time. But then again, thats seafoam and not the GM cleaner in the OP.
You can't tell me it didn't remove sludge/deposits with such a drastic change in oil color in such a short amount of time. But then again, thats seafoam and not the GM cleaner in the OP.
Thread Starter
Melting Slicks
Joined: Dec 2006
Posts: 2,304
Likes: 101
From: Orange County California
I just don't get what SeaFoam does when you put it in the brake booster line...or am I that naive that I don't know that the booster line connects directly to the vacuum system.
Thread Starter
Melting Slicks
Joined: Dec 2006
Posts: 2,304
Likes: 101
From: Orange County California
Y'know, I talked to the dealer that first told me that the pinging was "normal." He just said, "you really don't need any additives." So I called him yesterday and said there's a lot of people that think Sea Foam or the GM top engine cleaner did wonders...he said, "we think you're wasting your money." So....is there any issue with "overcleaning" that could affect seals or gaskets....or voiding a warranty?
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Burning Brakes
Joined: Feb 2005
Posts: 752
Likes: 1
From: Tulsa OK
Thats it.
Burning Brakes
Joined: Feb 2005
Posts: 752
Likes: 1
From: Tulsa OK
Y'know, I talked to the dealer that first told me that the pinging was "normal." He just said, "you really don't need any additives." So I called him yesterday and said there's a lot of people that think Sea Foam or the GM top engine cleaner did wonders...he said, "we think you're wasting your money." So....is there any issue with "overcleaning" that could affect seals or gaskets....or voiding a warranty?
Advanced
Joined: Sep 2003
Posts: 92
Likes: 0
From: Pearl ms
i used 2 cans of top engine cleaner through the pcv. I killed the engine and let it sit overnight. Be prepared for a lot of smoke when you crank it in the morning. It will do the job. Also you need to change the oil.
Le Mans Master
Joined: May 2006
Posts: 5,987
Likes: 18
From: DuBois PA
St. Jude Donor '11-'12-'13-'14-'15
I use the vaccume line coming off the PAssener Valve cover going to the Intake on my 99. Your info isn't filled out so I don't know what year you have...
Hey? Has anyone tried squirting Deep Creep in front off the TB? I'm thinking that popping the temp sensor out and squirting Deep Creep in thru that port would clean the TB up pretty good if you're sucking allot of oil... Thoughts? Experience?
Hey? Has anyone tried squirting Deep Creep in front off the TB? I'm thinking that popping the temp sensor out and squirting Deep Creep in thru that port would clean the TB up pretty good if you're sucking allot of oil... Thoughts? Experience?
Le Mans Master
Joined: May 2006
Posts: 5,987
Likes: 18
From: DuBois PA
St. Jude Donor '11-'12-'13-'14-'15
I've heard someone stating this before. Unless you're getting a busload of blowby, how would adding Sea Foam to the intake affect your crankcase? Or does letting it sit overnight allow the stuff to get past the rings?
Race Director
Joined: Sep 2004
Posts: 17,786
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From: Redsox, Pats, Celts & Bruins !!! Redsox Nation !!!
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
To see just how much "blow by" you are getting just add a catch can. I added one to mine for a little insurance and I get about 2 tablespoons a month. That is enough to gum up a few things in the intake.
Thread Starter
Melting Slicks
Joined: Dec 2006
Posts: 2,304
Likes: 101
From: Orange County California
Well, got the Sea Foam, put it in through the PVC intake, and everything was fine. Did the "last couple ounces more quickly" thing to drown the engine, but it didn't really drown. Since it kept running, I turned off the ignition quickly and got some dieseling. Since the engine was going through convulsions, I quickly turned it back on, then off, and it stopped.
Question: Did it all run through, or will I still get benefit? And, what did I do wrong to get dieseling (pre-ignition)? There was a thread in here in April where some people thought there was debris clogging the spark plugs or in the combustion chamber. I suppose I could just wait and see what happens during the burn-out, but I thought I'd ask if anyone else got some dieseling, also.
Question: Did it all run through, or will I still get benefit? And, what did I do wrong to get dieseling (pre-ignition)? There was a thread in here in April where some people thought there was debris clogging the spark plugs or in the combustion chamber. I suppose I could just wait and see what happens during the burn-out, but I thought I'd ask if anyone else got some dieseling, also.
Melting Slicks
Joined: May 2000
Posts: 2,498
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From: Brentwood TN
Charlie
Thread Starter
Melting Slicks
Joined: Dec 2006
Posts: 2,304
Likes: 101
From: Orange County California
Yeah, saw that video. So I took the beast to the work parking lot. Hahahaha.
The thing is, I got less smoke than I expected--a fair amount, but not an excessive amount--and it only lasted about 20-30 seconds. I'm thinking either my engine wasn't that carbon'd out (I regularly drive it hard and used Mobil Premium), or I didn't get that last few ounces to stay in the chambers. Remember (above) I had some dieseling before it shut off, so I never was able to "drown" it.
Anyway, seems a bit better and smoother. I'd estimate a 5-7 % increase in acceleration. I'm thinking of doing it again tomorrow? What do you think? I'm draining the oil, though, so unless someone tells me I messed up with those last few ounces of Sea Foam, I don't want to change the oil twice in one weekend.
The thing is, I got less smoke than I expected--a fair amount, but not an excessive amount--and it only lasted about 20-30 seconds. I'm thinking either my engine wasn't that carbon'd out (I regularly drive it hard and used Mobil Premium), or I didn't get that last few ounces to stay in the chambers. Remember (above) I had some dieseling before it shut off, so I never was able to "drown" it.
Anyway, seems a bit better and smoother. I'd estimate a 5-7 % increase in acceleration. I'm thinking of doing it again tomorrow? What do you think? I'm draining the oil, though, so unless someone tells me I messed up with those last few ounces of Sea Foam, I don't want to change the oil twice in one weekend.
6th Gear
Joined: Jul 2006
Posts: 6
Likes: 0
From: Enfield CT
For what it's worth, I have alway's used Marvel Mystery oil in my gas to keep the engine clean. Not alot about 4 oz. to 10 gal whenever I think of it. Lubricates the upper cylinder wall's,Injector's stay clean and keeps any carbon off of the piston's and valves.