I have a 01 C5 and my question is this.
Has anyone used Seafoam for a tank additive to clean injectors.
If not what is recommended.

 

I use it all the time, works great! My main reason for it's use is keeping my fuel gage sending unit working properly, Techron doesn't seem to help. JOE

 

Saw this in another thread and did it. I always wanted to do it but wasn't sure what was the best way to go about doing it. I took some others suggestions and went through the vacuum line going into the brake booster. Let it sit for an hour, started her up after about five or six tries and let the smoke fly!

 

Oh yeah I have used it in the tank since I first had the vette . This is another great use.

 

Thanks for the advice. Do you put a full can(Seafoam) in the tank when its full of gas?

 

It does not go in your fuel ? What smoked and why ?

Toque

 

I was under thr impression you put a can in the fuel tank and drove.
I have done this before.

 

Do a search......lots of posts on Seafoam. It can be used several ways depending on what you want to do.

 

Thanks I will check it out

 

do a goggle search for sea foam you'll find a lot of vids good luck

 

Seafoam is helpful for some. I did it and had no smoke at all. Changed to FAST intake a year later and looking at my intake there was just a little film or no film of oil in the intake. (For a stock C5 absolutely (Maybe like a fly on a locomotive effect) no obstruction of air flow.) I also put in a catch can and there is little but some residue in the can. (MUCH, MUCH less than I was led to beif lieve comes through the PVC valve.)

Seafoam is probably ok with the gas tank app once per year or so for the stock C5 but in no way needs to be done in any way, fashion, or method at any time.

I put it in once per year in the gas tank to possibly clean the fuel injectors. If you are looking for any noticeable change in performance forget it.


Just talk to EXPERT engine people. Most have NEVER heard of Seafoam.

 

I have used it in the past. Most tuners will say its "snake oil" though

 

Seafoam is essentially naptha (sp) and will clean the injectors but any commercial injector clean will do the job at 1/3 the cost.

 

I used a full can to a tank of fuel and threw 2 codes repeatedly until I refilled with fresh fuel
P1133 and P1153
I think the PCM thought the fuel was Contaminated.

 

I use one full can of Seafoam in my fuel tank, then put a 1/3 part of the can in the oil pan, and usually I put an entire can through the vacuum system to clean the intake and pistons.

Its very simple. If you look down from the drivers front fender at the brake booster there is a large vacuum line coming off the left hand side. Remove the vacuum line from the brake booster. Put your thumb over it as someone starts the car for you. After the car is running and up to operating temp, remove your thumb from the vacuum line and place a funnel into the line. This will make pouring the seafoam down the line easier. When the funnel is in place have the person in the drivers seat rev the engine to about 2500-3000 rpms and hold it steady as you pour the seafoam into the funnel. The car is going to bog down and may possibly die. LET IT DIE! If it doesnt die then turn the ignition off as its bogging. You do this so the seafoam will sit in the manifold and cylinders and loosen up the carbon buildup and oil residue. Let the car sit for an hour or so before you return to it. Commence start up. This will take a few tries but dont get dicouraged. The cylinders are flooded with the seafoam and will take a few tries to get it going.

Once its started just sit back and enjoy the smoke show. The white smoke is carbon build up and oil residue from the cylinders, pistons, and intake manifold. The more smoke you have the more build up there is and vice versa.

Then take the car out and enjoy the new found power. I felt a huge difference once I did mine.

 

You can use 1/3 of a can, sucked through the brake booster vacuum line in order to clean the "top half" of the engine. Once you have 1/3 poured in, you shut the engine off to allow it to soak in, while it breaks apart carbon build up. When you start the engine back up it burns up all the loose carbon and spits it out of the exhaust. The smoke comes from the carbon and oil deposits. A "clean" engine produces virtually no smoke.

It's very similar to the fuel injection cleaning services that many shops offer. Many of us have used it for years.

1/3 of a can also be poured into the crankcase to clean the bottom half of the engine, but the oil will need to be changed almost immediately. I, however, have never used it in this manner, nor have I ever recommended it.


**EDIT**
Previous poster beat me to it...

Although, I do not rev the engine at all. I just pour it in slowly, until I use 1/3 of the can. And I NEVER let it die. Letting it die makes me feel like I'm on the verge of hydrolocking.

 

when I had fuel gauge problems I tried Techron four times in a year,after giving up ,a friend said to try Seafoam,one tank application fixed the problem and it is perfect now for 8 months.