For emissions, some of the unburned HC gets swept around for a second trip through the combustion chamber. Isn't this how carbon would get into the intake side.

RX-8 Ford Document: "With the side-exhaust ports of the RENESIS, unburned gases are retained for burning in the next combustion cycle, further reducing regulated emissions."

 

they did not say anything about the aftermarket k&n filter, also i never "lug or bog" my 8 i keep it up in rpms to it will have plenty of power.

 

If it's any consolation, you're not alone:
https://www.rx8club.com/series-i-trouble-shooting-95/ssv-stuck-open-code-p2070-79403/
It's really a shame that they're not covering any of this under warranty; you're very close to still being covered and it's obviously a known problem.

I'm also wondering if the "Oil in the intake" problem that several people have mentioned here might contribute to the buildup of carbon on the valve.

 

I hate to say it but I see this stuff all day long, just in other brands of cars. I see Hondas Vtec valves crap out, Pontiac EGR valves. I would not give up on the car. There is not one perfect one out there or they would not have a service department. Hell VW is famous for this and cost about $3000.00 for the intake installed. It just sucks it now happens to the RX.

 

easy on the initial Caps. Are you a copyrighter for an ad agency or something? haha.

 

I think when someone types in all caps the forum software reformats it to initial caps. Let's see if I'm right:

 

I'm Typing This Whole Post With The Shift Lock On. Yes, The Forum Software Will Automatically Change This To Initial Caps, But If I Go Back And Edit This It Will Stay All Caps.
/hijack

 

Hi Motorog,

I have more info now. The problem of sticking VVS was carbon deposits too, if I believe the guy who fixed it.
He actually took the VVS assembly apart and had to use a very fine sand paper (800 - 1000) to take carbon off the barrel. Then he cleaned and sprayed with WD40. It's working fine now.
I'm pretty sure you can access the SSV by taking off the plastic parts of the intake manifold without removing the aluminium part.

Cheers,

Fabrice

 

thanks for the info.

 

ok this is where i'm at now.
MAZDA SERVICE CALLED AND SAID THEY WOULD COVER THE PART AND I WOULD HAVE TO COVER THE LAB0R.
THE LABOR IS 14 HOURS AND $960.00.
MY BUDDY LOOKED AT MY CAR TODAY AND PLACED IT ON HIS COMPUTER AND NOW IT STATES THAT IT IS STUCK OPEN, HE SAID HE COULD TAKE IT APART AND REMOVE IT OR FIX IT OPEN.
ALSO HE THINKS IF I FIND SOMEONE WITH A ECU PROGRAMMER I COULD REPROGRAM IT TO STAY OPEN.
HE SAID ITS LIKE A OLD SMALL BLOCK DUAL PLANE CHEVY INTAKE WHEN ITS CLOSED AND ITS LIKE A SINGLE PLANE INTAKE WHEN ITS OPEN.

WHAT DO YOU GUYS THINK?
ROG

 

I think he doesn't know much about our cars if he thinks he can "reprogram" the ECU

 

I agree with Charles, I would get a second opinion from a reputable shop in your area that deals with rotary engines. It sounds like the valve is working it just gets stuck from the "carbon buildup", if that is the case and it is easy to locate just have them clean it. Then again if Mazda is offering you a new part, only pay for labor, then if you leave they might take that offer back. I would ask the Mazda mechanic why they can't just clean the valve. Sounds like they just want to be "part changers" and not mechanics.

 

He was probably wondering why his caps weren't coming out. Looks like he found a way to "fix" that.

 

I'm sorry but 800 miles out of warranty i would get MNAO on the phone to get this **** taken care of through warranty, total bullshit. Or get a lawyer. You should not have to pay a dime.

DO NOT LET YOUR FRIEND TOUCH THE CAR.

AND STOP TYPING IN CAPS.

 

i'd pay to get it fixed unfortunetly...

there isn't a whole lot of driveability issues that i experienced with it stuck open, but you will always have a CEL as the first thing the car does when you turn the ignition to ON is to stroke that valve, and if it see's its already open it throws the light... which in itself is not that bad but with it always light up you will never know if something else has failed (which could cost more money if not fixed) and you may not be able to pass inspection

 

Is it not part of the Smog or could it effect it? Maybe it should be covered??

 

If you pay the labor, then you should be able to KEEP the part.

 

What happened?

What is curious about this phone call you received, is why would Mazda pay for the part?

Quote:

Originally Posted by motorog

MAZDA SERVICE CALLED AND SAID THEY WOULD COVER THE PART AND I WOULD HAVE TO COVER THE LAB0R. THE LABOR IS 14 HOURS AND $960.00.

Maybe MNAO is covering the entire repair, and the dealer is ripping you for $960? Are they double dipping here? I'm sure if MNAO is willing to pay, then I bet they allocated hours of labor that the dealer can ask for compensation for. This sounds fishy to me. I would ask to see the actual documents from MNAO on this one.

I'm worried about this issue more now than ever. I removed my oil cap which is aluminum, and looked inside of it. It is coated with carbon. I never noticed it that much before, but after reading this, I looked more closely. This might be a bigger problem than we are led to believe so far. Not every RX8 owner is on this forum.

If the '06 engines are clearly redesigned in how they breath, would not this constitute a possible TSB by Mazda? Clearly they changed something that they saw as a design flaw, otherwise why would they change it? They should issue a TSB to add an oil catch can and clean or replace the intake manifold.

 

They don't need to change much to retrofit the new breater system. It is a few vacuum hoses and a one way valve and a few fittings.....probably costs them less than 5 bucks for the parts.

The problem is that unless it is an emissions problem they really aren't mandated to fix it

I guess if we all bitched about it more something would happen

 

I'm just going to put on an oil catch can and be done with it. But I need to know what will clean carbon?

 

Please stop yelling.

 

how do you think i feel... my SSV valves only lasted 2.5 years the first time! It was all fine and dandy when it was under warranty, but if that puupy takes a dump in 2 years it will be time for a new car

If worse come to worse, the CEL doesn't pop up until the 2nd drive cycle. So theoretically you may be able to reset the ecu before a salesman takes a drive and tells you how much its worth on a trade

 

i don't know about you guys, but if this isn't reason enough not to put on an aftermarket intake, I don't know what is.

 

i still have the factory intake and that didn't help me -shrug-

 

Please tell me what this has to do with the intake??? This is an intake valve problem.......