I was wondering if anyone has ever used any type of injector cleaner. I have a misfire on 2 cylinders, I am replacing coils, plugs and fuel filter. I am running a little lean, thought maybe a slightly clogged injector mite be the culprit or fuel pump or maybe a clogged filter. go through process of elimination. No bad codes except the misfires. It runs lean with stock tune or performance tune.

 

Im pretty sure its the plugs... and then if that does not fix it go after the oil fuel pump...
let me know when your done swapping that out...

 

Doin plugs, coils and fuel filter next weekend. Just eatin at me a little bit. Its already a lot better than it was..

 

i run that lucas stuff maybe a small bottle twice a year or so. either that or a bottle of techron. car runs noticeably more responsively for that one tank of gas or so. then it just goes back to its "normal" blazingly fast. it certainly does no harm, once in a while.

i've been tempted to use that sea foam but that stuff seems a bit more serious, so i haven't.

that said, plugs/coils/oil/filters changed regularly changes all

 

I like techron and it has helped some of my cars run smoother over the years..

 

seafoam worked so well in my air pump I've been thinking of mixing some into the fuel and even crankcase....Anyone try either?

 

cool. i'm gonna try it. did you just use the "engine cleaner" one?

 

Please don't use seafoam in your 911. I would only use sonething like the techron stuff once in a while.

 

I'm not sure why one would not run seafoam. I used it in my old 1983 320i when I first picked it up. After two tank full, one can actually see the CIS injection lines become lighter vs the old dark dirty condition before.

 

yes, why not? can anyone expound on the potential harm it could cause? or not!?

 

I don't see how seafoam could hurt at the end of a tank. Not sure you want to dislodge anything in your crankcase and have it end up in the lifters....

 

I've put in the oil before an oil change, drive around for about 20 minutes, then change oil. I've added to the gas. No issues.

On other cars, Audi S4, I've added directly to the engine via FPR vacuum hose, to help remove carbon build-up. No issues, smokes like crazy though, and I did change the spark plugs after.

I've also used Techron on the turbo, no issues.

Just stating what I've done, some may object to Seafoam, that is fine. I've never had any issues with it.

 

I know all the guys locally here with some high performance cars that run E85 will run Stabil on every fill up for many many years.

 

is there any consensus opinion on using the seafoam "engine cleaner" version ( there are a couple iirc ). it is NOT like the techron or lucas, both of which i have used with no adverse result, only minor increased performance for a short time thereafter.

if it cleans/burns carbon? then it sounds ok to me.

 

Here's a cut/paste from a post I offered up in another thread regarding Seafoam. Note while I was specifically addressing the issue of Seafoam supplying extra/additonal engine protection, I think the information applicable to its use as a fuel system cleaner, too.

As for Seafoam… let us see what this contains that could possible for it to supply extra or additional engine protection…

The major component is "pale oil" CAS # 64742-54-7 which makes up of between 40 and 60% by weight of Seafoam.

What is 64742-54-7? It a complex combination of hydrocarbons obtained by treating a petroleum fraction with hydrogen in the presence of a catalyst. It consists of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 and produces a finished oil of at least 100 SUS at 100.degree.F (19cSt at 40.degree.C). It contains a relatively large proportion of saturated hydrocarbons.

Pretty much the same base oil as is used in the manufacture of a number of oils.

Next comes "naphtha", CAS # 64742-49-0; and this makes up between 25 and 35 % of Seafoam. This is a feedstock for high octane gasoline and can be turned into a fuel for camp stoves, lighter fluid and a cleaner.

Third on the list: IPA. CAS # 67-63-0. Seafoam contains 10 to 20% of this stuff. What is this stuff? Isopropyl alcohol. This is widely as a solvent and as a cleaning fluid, especially for dissolving oils.

Dissolving oils? Not what I think I'd want to use in my Porsche engine's oil.

I see nothing in Seafoam that offers any "additional" lubrication. It simply replaces the existing oil (hopefully an approved oil) with some pale oil and a couple of other items: camp stove fuel and a cleaning solvent.

Yuck.

Just so it is clear, my advice is to not use Seafoam. Not mixed with gasoline. Not injected directly into the intake. And not added to the engine oil.

If you feel there is a need to clean the fuel system, the injectors, remove deposits from the chambers, etc., use Techron, as per directions on the bottle.

After the tank with Techron is down to say 1/4 level I like to change the oil/filter.

One should not have to use Techron very often. The proper fuel has detergents in it and should keep the fuel system clean, but it does need help. One has to drive the car in such a manner the fuel cleaners can work.

Based on my experience this requires one hit the highway with the car and drive at highway speeds for 30+ (and more is better) miles.

Running around town, even short bursts on the highway obtaining, shall we say hyper-legal speeds, is not sufficient.

Might also point out that Techron that one buys over the counter and adds to the fuel tank results in a more aggressive dose of Techron that is available in those gasolines that have Techron added already. The overuse of Techron brings with it the risk of fuel injector tip erosion and possibly other damage to the fuel system components over time.

As I like to say I prefer to keep the fuel systems clean in my Porsches organically but using a proper grade of top tier gasoline, buying fresh gasoline, and trying to drive my cars -- once in a while at least -- in a manner I covered above to give the cleaner present in the fuel a chance to do their job.