Thanks. I usually do stuff through Facebook, but nobody on here would be able to see it.

anyone's car ever completely died after doing the seafoam n the next day it was fine?? i seafoamed it last summer n read the instructions step by step and followed it to the letter, then i drove it after 30mins n it stalled n shut off at a stop. ihad to push my car 5 blocks to my house lol, luckily the next day it was better now its just fine, n u feel the difference...

^ Glad it works.

so you guys stand by your sea foams and it works? i never had to do that to my pistons and i've never even heard of it until i got in this forum. i'm so relunctant to try, especially since I couldn't find it in the owners manual that this was recommended. oh well, i'll give it a world this week.

It makes sense if you think about it. The side seals get stuck with a lot of carbon. Reving the car can only do so much. Using Seafoam gets rid of the gunk stuck in there.

It's kind of one of those things that nobody can really prove without a teardown before, putting it back together, doing it, and tearing it back down. But I'm pretty sure it's a good thing, with how much my car smoked after. Carbon is the enemy of the Renesis after all, and I burned a lot of it out yesterday.

Mazda offers a service/kit that you can have them do or do it yourself. It called Zoom power cleaner and it's basically the same thing.

https://www.rx8club.com/forum/showthread.php?t=142852

How often do you Seafoam / Zoom Zoom 9k?

I have only done it once on my car in 124,000 miles. granted this motor only has 28k on it but hardly any smoke at all came out. I just did it for shits and giggles because grungepup was doing it.

But This motor has been SOHN injecting 2 stroke, premixing, is never driven cold, and is red lined often all since day one so carbon should not be an issue.

I drive in cold and warm and just premix. I also do not redline it every day because im trying to save on gas. This leads to quick carbon build up...in which case one needs to decarb regularly. Some people do it every other oil change, it all depends on your driving style, your mods, and your car.

I want to do this with a few of the guys that live out by me. 3-4 of us all at once with no wind, we would have the fire department down there in no time.

Video of my first time

So using it as a daily and redlining about once a day Ishould do this at least once every few oil changes?

Why must you keep bumping old useless threads?

Because, some people are new members and owners. Even tho it is an old thread, it shows that they are at least searching for things, instead of asking and receiving the "why haven't you searched?" Reply

I recommend that anyone that is planning on seafoaming, read through my before-and-after picture thread for what is actually happening inside your engine when you seafoam, and how things are different depending on how you do it.

https://www.rx8club.com/series-i-tec...r-pics-241867/

^ I read it and i think it will work, if its done correctly. Planning to ask one of the rotary mechanic here in Vegas to do it for me...

So are you saying you are better off doing this while the engine is running?

A) Comparing the impact of letting the engine soak in seafoam vs ingesting it while it is running, letting it soak made almost zero impact. Ingesting while the engine was running made more than zero impact, but not substantial.

B) Ingesting distilled water while the engine was running had approximately the same impact as ingesting seafoam while the engine was running. (Seafoam also costs 100 times more per unit of measure than distilled water)

Mazda's decarb service soaks the engine, but they also do other stuff with oil injection and ECU changes during the process that we can't duplicate ourselves and I believe makes an impact on the result.

Ingesting LOTS of distilled water was still not making a remarkable improvement in the amount of carbon. It was making progress, but I figure I would have to have passed 10 gallons or so of it before I got significant carbon clearing around the seals. I wasn't willing try that much seafoam.

I highly suspect that a water injection kit that is installed and firing while driving for an extended period of time would be the best option for engine cleaning. Anything else tried in the driveway is mediocre at best.

Does this do anything to help remove carbon/sludge on the SSV?

No.

The service ports are after the SSV valve point. The only viable way to clean those would be to disassemble the UIM to get down to them directly. A water/meth injection kit may help keep those clean, since it would be injecting far before them, but I doubt just water would and I wouldn't run water/meth injection even on a stock engine unless I compensated for the fuel quantity introduced, and that's a headache I don't think I'd be willing to deal with.

I'm in the market for another RX-8, and water injection is almost certainly going on first thing, with 'before' rotor pics and more taken at intervals to see the progress of any cleaning, or lack of it. My theory isn't really proven enough for my head yet, but I'm willing to test it.

I've thought about doing water injection before. Can you use the BHR throttle body spacer and just attach it there? Also I was worried that it would push me out of STX class...

Yes, the BHR throttle body spacer is what makes the most amount of sense for any injection system, water, water/meth, or nitrous. It's why they made it.

Yes, any injection system is going to give you classing problems for any race series. A very few allow water injection only, I don't believe any allow water/meth. I don't think the SCCA allows anything.

That's what I was afraid of... Damn. I guess I could disconnect it when I run...

Oh also, is it ok to submerge the tube in the seafoam if I use the method of keeping the engine running? And does it still produce the lovely toxic cloud?

RIWWP, wasn't it you that had compression come back in spec after the dealer performed a de-carb procedure?

If I remember the manual right, they difference at the dealer is they max out the oil injection rate after the procedure to avoid turning a freshly degreased engine. I would be surprised if that made a difference in the net effectiveness. Anyone with a MM AccessPort can replicate that, there is a max oil map.

So if we assume that Seafoam is basically the same as the Mazda stuff, there must be a usecase where it helps with the basic procedure. Right? I feel we're missing something here.

If you only do 1 rotor at a time, you will have trouble keeping it running without keeping on the gas pedal to keep the RPMs up. This is apparently due to the ECU's horrified reaction to the resulting AFRs that it shows. One rotor is way too rich, the other is way too lean, neither is generating enough power, and the ECU is having an aneurysm. If you do both rotors at the same time, you can submerge the end and it will maintain idle due to the fuel content in the seafoam. I could idle without manual intervention doing this on windshield washer fluid (basic 50/50 water/meth), but could not do it on only distilled water.

Although, keep in mind that that much volume isn't getting atomized very well at all, which is going to reduce the amount of impact it's going to have.

The smoke cloud is almost always just from the seafoam just burning off while sitting in the exhaust. There was a bit of smoke, but minimal, when ingesting it while running. No noticeable exhaust smoke on water/meth or just water.



Yes, see the pic thread linked above, I have 1 compression test pre-decarb, 3 post-decarb by the dealer, and compression steadily increased.

Yes, they increase the oil injection, though I don't think it's a flash map change, but an actual mode the ECU goes into.

I just looked up the procedure, and there is indeed one very big difference. The decarb that Mazda introduces into the engine is being introduced as a spray through a vacuum hose. If you have ever messed around with decarb spray vs liquid seafoam, you would see the difference this could easily make. Decarb spray is very cold and it's under pressure, both of which could easily assist breaking carbon free from the surface underneath (temp due to different expansion rates of the materials). As it's being sprayed into a vacuum line, some of this is certainly mitigated, but it is a very noticeable difference.

If you have ever taken anything carbon caked, like a set of spark plugs, and soaked them in seafoam you would see how little is happening from simple soaking. I soaked a set of plugs for over 24 hours ones, and there was a slight haze of carbon in the seafoam by the end, but no perceptible change in the amount of carbon on the plugs and the carbon wasn't any easier to remove.

So yes, I agree that there is something missing when we do it in our driveways.

Hmm, I have never really used the liquid Seafoam I always used the aerosol version which is in the link Buy Sea Foam Spray Cleaner and Lube (14 oz.) SS14 at Advance Auto Parts

Do you think that this might make the difference between what the dealer uses and the liquid seafoam? I also add a few ml's of premix after I have let the car warm up then finish preforming the procedure .