felixwankel88

ok on

Co i got 22.41 and the limit us 30.00 so thats good
NOx i got .53 and the limit is 3.0 so thats fine
and on HC i got 3.55 and the limit is 2.0 ouch i failed... please tell me what i can do to make it pass, this is my daily driver and i cant drive with a R sticker for too long..


thanx

mbaha

my guess would be either your cat or leaky vacuum hose in the rats nest...

Did you run the car on freeway for ½ before you went in to get cat nice and hot?

check this out as well https://www.rx7club.com/showthread.p...2&page=1&pp=15

felixwankel88

i ran it pretty good before going, ummm just for some background info, itz 85 GSL, so itz 12A Carberated.. soo, i will read that post, thanx, anymore advice is welcome


thanks

Dustin

camocarl

iTrader: (5)

Slip the guy a George Washington

rotor vs. piston

I know this may be obvious, but you're running rich. With your NOx so low and HC at 3.55 you can stand to lean it out a bit for the test (and it may run better anyway) your NOx may, should, go up but the HC should drop to a passable level.

When's the last time you tuned the carb?

j9fd3s

iTrader: (3)

if the hc is high, its usually the cat being old or the acv isnt working right. if you get the air pump to pump air to the exhaust ports, like it should, you shouldn't have a problem passing

felixwankel88

ive never tuned the carb, no clue how, this Fb is all new to me, hit me with the info on how to plzzz

peejay

What figures are those numbers in?

Anyway, I'd make sure the air control valve is working properly.

If the ACV is working, and the air pump is working, and you have a converter, YOU SHOULD PASS. Period.

gonzz

I agree with slip his a George W..

felixwankel88

sliping money aint a option, i need to pass, without cheating the system...


any real help will be Great

EL5Letra

**** emissions and move to FLorida!!!

j9fd3s

iTrader: (3)

um make sure the acv is pumping air into the exhaust ports like its supposed to. this is all the help you need. i live in ca, if my cars dont pass smog i cant drive em, so my cars pass smog

mbaha

i agree give this a shot

felixwankel88

is there a rite up to how to tune the carb, is it in the FSM ??

SparkienSuggah

high HC is also an indication of weak ignition.. inspect/replace wires/plugs/cap+rotor
dont mess too much with timing, as too much timing shoots the NOx waay up.

also, dont run MMO during an e test, and try to find some gasahol (10% is good)

furthermore, inspect your air pump system to ensure that you're getting enough air injection. there is a way to hotwire the vac switch so the air pump is always on, and that has helped people pass in the past.

enjoy!

LookThatsMe

go to a gas station pay 100 bucks and bammmmm inspection sticker... see if u where in jersey i pay 100 bucks and get a one form DMV and thats a 2 year inspection too =)

mbaha

Did you read the CA thread? Have you done a basic tune up? Also read the faq page for carb tuning tips

peejay

LISTEN TO THE MAN.

My car wouldn't pass emissions, the ACV was fried. Carb was in proper tune, it had a new converter on it, it was just a no-go.

"Adjusted" the ACV to ensure that the air pump air *always* went to the exhaust ports. Damn near baselined the test sensors.

It also helps to make sure timing is set to factory specs or just a little bit retarded.

Note that if you enforce the ACV to always pump air to the exhaust ports, you need to un-do it after passing, or you will fry the cat. The reason the ACV is there is to disable the air pump flow under conditions not tested by the Federal test (the ones the OEM's use to certify the cars) so the converter will last the mandatory 5 year/50,000 mile warranty. The PROBLEM is that most State "tests" go out of the Federal tests' bounds.

Rob.W

Oh my GOD... 22.41% CO? Jesus!

3,500 HC?

That's one polluting Rex! something isn't burning right, the limits in WA never exceed 3% CO, 300 or 400 HC (can't remember off the top of my head).

Check the ignition, there's no way that's just emissions... looks like RAW GAS.

If you were in WA I could hook you up, I've still got a lot of friends in emissions, but you're not... so dang.

peejay

It can't be 22% CO... engines start misfiring from running so rich at like 10 or 15%. (My limit was 2% I think)

The NOx doesn't make sense either if you measure in PPM like I've ever seen. (My limit was something like 1500PPM)

And the HC's just don't make any sense at all (my limit was something like 200PPM)

Basically all of the data we have can be considered invalid. All we can go on is that the normal emissions failure for an RX-7 is high HC/CO because of a faulty converter or malfunctioning air injection system. NOx failure is pretty much impossible for a rotary.

j9fd3s

iTrader: (3)

yeah, lol, i live in CA, all my cars pass smog

Rob.W

That HC does make sense, it's easy to run at 3500 HC. Gotta' be in bad condition or on full rich.

That ammount of CO is possible, but yes it will run horribly.

I've seen cars with maxed out (9,999, 21-22% CO), one was a Honda with a retarded GSR swap, the other was a gas dump truck.

There's simply no way with those numbers you're producing any power, and there's NO WAY IN HELL any Rex shoudln't pass that kind of test, the limits are insanely high.

The AVERAGE limit in WA is 150 HC, 1% CO, which cars should have no problem passing in correct working order. I go out of my way to not be in correct working order and **** off the other side of the political spectrum. "For every hybrid you drive, I pollute at least 1,000x as much." You think, new cars are almost always 0 emissions on an exhaust test, hybrid's gotta be that much cleaner. Oh well, I could care less. The only time I use a new car is to pass emissions, all my cars that need it are "zero emissions."