Seafoam

[Goodinblack]

Really I don't Change my plugs after I do it.

Carbon builds on the plug....... I would. Just saying.

 

[Jonah52]

You don't need someone in the cab. In all my vehicles I have done it at idle and just not killed it, then shut it off and let it sit for 10 minutes or so and drive it harder then normal.

 

[BigWheelinBubba]

Just a little heads up for seafoam newbies..

I've been using it for years on probably 15 different vehicles without issue. I SWEAR BY THE STUFF!

BUT..!
My 2001 Tahoe LT has 250k on the 5.3 and it was running sluggish. I came to the conclusion that it was carbon buildup and I needed to do something about it.

First I did the seafoam.. half through the booster hose and the other half in the tank with 8 gallons in it. The usual..It did what it was supposed to do.

Secondly I did some research on using E-85 as a cleaner and octane booster. I found that mixing 30% E85 to 70% premium (92oct) worked wonders! It really cleaned my engine and fuel system out nicely! Much better than I expected in fact! And my truck ran like it had never ran before!
So I continued to use the E85/Premium mixture every other fill up. The truck kept running strong and steady.

Well, to make a long story short I ended up getting a misfire while driving down the freeway. Figured a coilpack or something?

Get it to my buddies, put it on the scanner, found random multiple cylinder misfires.

After a little diagnosis we find that there is no compression on cyl.#1..
Cause: **A chunk of carbon buildup the size of a dime became lodged in the exhaust valve and hung it open long enough to cause bigger problems!

Outcome: Used engine with 120k on it

Lesson learned: Do NOT try to rapidly/aggressively de-carbon a high miles engine!

 

[Trixxterr]

You don't need someone in the cab. In all my vehicles I have done it at idle and just not killed it, then shut it off and let it sit for 10 minutes or so and drive it harder then normal.

Yup, this is the way I have always done it. I just put it in as fast as it will go w/o killing the engine, and as I'm almost finished just dump the last lil bit in and it kills it. Wait, and then drive the piss out of it for a few miles.. smoking the entire neighborhood on my way out. LOL.
I've done this, on all my cars. Both Tahoes, Z28, and Durango. All w over 150k on them. No ill effects. But that's just my experience..

 

[musicman]

I have only used it on small engines (atvs and such) but it has worked wonders. Gonna do it this spring on the Tahoe.

 

[Crowder99Yukon]

My Yukon has close to 150,000 miles. I take it this would be a good idea to try lol. But do I run a higher risk of carbon getting stuck in one of the valves?

Sent from my HTC One S using Tapatalk 2

 

[06GMC5.3L]

Just a little heads up for seafoam newbies..

I've been using it for years on probably 15 different vehicles without issue. I SWEAR BY THE STUFF!

BUT..!
My 2001 Tahoe LT has 250k on the 5.3 and it was running sluggish. I came to the conclusion that it was carbon buildup and I needed to do something about it.

First I did the seafoam.. half through the booster hose and the other half in the tank with 8 gallons in it. The usual..It did what it was supposed to do.

Secondly I did some research on using E-85 as a cleaner and octane booster. I found that mixing 30% E85 to 70% premium (92oct) worked wonders! It really cleaned my engine and fuel system out nicely! Much better than I expected in fact! And my truck ran like it had never ran before!
So I continued to use the E85/Premium mixture every other fill up. The truck kept running strong and steady.

Well, to make a long story short I ended up getting a misfire while driving down the freeway. Figured a coilpack or something?

Get it to my buddies, put it on the scanner, found random multiple cylinder misfires.

After a little diagnosis we find that there is no compression on cyl.#1..
Cause: **A chunk of carbon buildup the size of a dime became lodged in the exhaust valve and hung it open long enough to cause bigger problems!

Outcome: Used engine with 120k on it

Lesson learned: Do NOT try to rapidly/aggressively de-carbon a high miles engine!

Damn, that sucks. I did it a while back at like 80K. Planned on doing it again soon now that I am over 100K.


Sent from my iPhone using Tapatalk.

 

[Gzes]

Seafoamed the civic yesterday. Funny seeing the nebors being like wtf?

 

[BigWheelinBubba]

My Yukon has close to 150,000 miles. I take it this would be a good idea to try lol. But do I run a higher risk of carbon getting stuck in one of the valves?

Sent from my HTC One S using Tapatalk 2

I was running an E85 mixture also which probably contributed a lot to the carbon coming loose. I wouldn't worry too much if you're just going to do a seafoam treatment.

 

[01HDtahoeNJN]

How do you hydrolock your truck with seafoam i thought that was with diesels