so, I tested my FC for emissions today. I failed in CO, and NOx. the most allowed for NOx was 3, I got a whopping 7.6. and the most allowed for CO was 20, I got a mere 97.4

anyone have any ideas to help get these down? what specifically causes the large amount of CO? wouldn't that be just unburned fuel? and how about NOx? why might these two be up so much higher than eerything else?

I've got my airpump hooked straight to the exhaust, and a 17 year old cat welded in the middle, with 2.5 inch piping, and some small leaks they didn't notice.


also, my car always floods when I try to start it after its warm... and I just cleaned the injectors before I put them in, and they didn't leak. also, its idleing at 300rpm...or not at all, so I had to put some tension on the throttle cable. isn't the turbo supposed to adjust automatically? or is the idle screw on the bottom of the TB? if so, which way is it supposed to be turned to increase the idle?

oh, and BTW, my engine is a S5 jspec turbo, with the S5 manifolds, and a S4 TB. all emissions removed(except what I posted above) no PS or AC. OMP removed and running premix. also, I have a walbro fuel pump. fuel system is otherwise stock.

might I be able to just get a FPR, and turn it down a little...maybe along with a new cat? what do you guys think about that?

 

Sounds like the cat either doesnt have a CO/ nox oxidising brick in it, or its worn out to me.

 

Sounds like its time for alcohol or a new cat.

 

okay. looks like I'll be getting a new cat. hopefully there's one laying around at work.

 

Do a search under my screen nane and look up Gateway Clean Air Program. You'll find what you need, I think. Here, I did it for you.

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/gateway-clean-air-program-328067/

 

wow cool. NO carbon monoxide? I wonder if it would knock my 97 down to 20 or below?
guess I'll give er' a try.

 

my rx7 cant pass emissions niether, failed twice, but then i got it waved the thrid time, cost me money

 

I've got the catco cats too, they work VERY well. Not sure on long term though, we'll know when im up for smog in 2005 though.

 

the high NOX could be a buggared EGR valve, check it to make sure that its working as per the FSM

 

yo inflabablepets can u shoot flames with that cat? im in the market for one now and i wonder if i should get this or a bonez. i have a 88 n/a se

 

S5 J-spec. NO EGR valve.

 

I've heard that I did. Never saw it first hand though. I guess you gotta make that thing scream to do it. Well, before I replaced the converters it shot all kinds of crap out. Broken apex seals, sparks, pieces of melted converter.

 

well, I'm getting a new cat next wednesday. if it doesn't pass, looks like I'll have to get a PO box over in weld county

 

i just passed today after failing 4 times, my solution was a borowed brand new bonez cat, and a corvette electric air pump that blows a hell of a lot of air. i passed with flying colors

 

Seems like too much work. I think the best course of action would be the correct catalytic converter replacement. Oh well, to each their own.

 

you need a cat and CO isn't produced from unburned fuel its produse from you air fuel mixture being to rich. not the right air fuel ratio. the cat could cause the co problem. belive me im emision certified in pa.

 

Why did I blow 0 CO on my test then?

 

well, wouldn't the mixture being too rich cause unburned fuel? because if all the fuel is burned, its either stoich, or too lean.... so that leads me too believe that being too rich would mean not all the fuel is burned... therefore there would be unburned fuel.... therefore unburned fuel would cause the CO.

does this not make sense?

oh, and I'm NATEF certified in engine performance. LOL! seriously. but I don't know how I managed that... not that it really means anything anyway.

 

Does that really work?

I'm thinking about doing that.(get a PO box in a neighbor county with no emission) But wouldn't the address on your driver's liscense have to be changed?

 

Not to thread hi-jack...

I'll be going to comm college to take the classes to get state inspection certified.... .how hard are the tests and ****?

If you wouldn't mind... throw me a PM sometime, the owner of the shop I work at is PAYING me to go take the classes... (he's muslim... doesnt speak very good english, so I'm his "english bitch")

 

Im MO they are cracking down on that type of fraud. You have to show proof of residence like a trash bill or somthing.