Ok so i took my 93 ej1 and the car is completely stock and is in immaculate condition mechanically no ghetto **** so it should have passed easy but it failed because of emissions... when they checked my gas tank they said my NOX and HC ratings were high.... how do i fix this would lucas gasoline additive help? how do i bring my ratings down?

 

Old cat?

 

possibly but I actually i got my exhaust done before the inpection because my cat was hollow and my muffler had a hole but i fixed all of that a couple weeks ago... the cat has new bolts on it but it still looks like the old one when i checked i dont know what the exhaust guy did???? it might be the cat but what else could it be?

 

That's all I could think of, I'm not an emissions expert, but bump for you to get your answer. I hate smog too.

 

do a tune up with a new fuel filter

 

yea i need a new fuel filter also but thats what im gonna have to do

 

What were the numbers??? we need numbers.

What was the O2 reading's That will tell you if the cat is bad by a high O2 reading.
Anything above 0.4% during both tests would point to the cat.

I would go ahead and replace the cat and the O2 sensor.

Let me guess HC around 200ppm's and Nox about 2800ppm's

No, the Lucas stuff won't help.

 

Here are the numbers:

NOx
Standard=1242
My Reading=2104

HC
Standard=159
My Reading=176

 

no the readings were high but not that high lol even tho the NOx was pretty high

 

retard the timing

 

doesnt that hurt my performance?

 

it may be too advanced you should probably check it. though you could temporarily retard it for the test I seen a cobra without cats pass wit the timing drastically retarded

 

New CAT, and maybe look into replacing the sparkplugs, if not the wires, and whole dizzy itself, almost like a general tune up.

 

If your timing is so far advanced that you fail on NOx, then you'll get better performance by retarding it. Set it to spec. On the dyno, my particular engine did better at 16 than 18, although most engines do best at the high side of spec. I also had to switch to one step colder plugs because for some reason my NOx were always high and very finnicky depending on where the ignition timing was.

Additives are never a solution, even if they mask the problem enough to get you passed smog. Fix the actual problem. In the end your engine will run better and make more power and get better mileage.

I can't help you with your HC w/out seeing your O2 and CO2. HC can mean you're running rich or you're running so lean that the mixture isn't even igniting and all the unburned fuel is going right out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97Ej6mike &raquo;</TD></TR><TR><TD CLASS="quote">New CAT, and maybe look into replacing the sparkplugs, if not the wires, and whole dizzy itself, almost like a general tune up.</TD></TR></TABLE>

i already have a new dizzy but havent changed the plugs or wires

 

replacing the plugs wouldn't be a bad idea either.

BTW this car doesn't have an old tank of gas or goofy additive in the fuel tank does it?

 

its a daily driver so nothing has been sitting and ive never used any kind of additive in this car

 

go to autozone or somewhere and pick up quick emissions fix fill up the tank and before add it its garented to work

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondadr. &raquo;</TD></TR><TR><TD CLASS="quote">go to autozone or somewhere and pick up quick emissions fix fill up the tank and before add it its garented to work

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Something ( an additive) that can legally lower your emmisions cant be too good for your motor and fuel system.