elmo908

Hey can anybody help me out, I am a little strapped on time and I just did a visit at the smog referee for my 93 hatch with 94 LS motor/ecu. I have gross polluter rating on the NOx levels and was wondering if anyone can help me out here. Thanks

ddd4114

High NOx is caused by high combustion chamber temperatures and/or a failing emissions equipment (such as your EGR valve or cat). Have you looked into the possibility of either of these two issues existing?

Braco11

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ddd4114 &raquo;</TD></TR><TR><TD CLASS="quote">High NOx is caused by high combustion chamber temperatures and/or a failing emissions equipment (such as your EGR valve or cat). Have you looked into the possibility of either of these two issues existing?</TD></TR></TABLE>

also, post all your readings....that will give us more info

elmo908

15 mph
%CO2 14.2
%02 1.4
HC (ppm) 56
%CO 0.04
NO (ppm) 2867 GROSS POLLUTER!

25 mph
%CO2 14.3
%02 1.1
HC (ppm) 33
%CO 0.03
NO (ppm) 2393 GROSS POLLUTER!

elmo908

BTW 17 degrees BTDC

ddd4114

It looks to me like you're not getting enough fuel. Your CO%, CO2% and HC seem fine, but your O2% is high, and your NOx is through the roof.

Try running some fuel injector cleaner through your next tank of gas, Seafoam your engine, retard your ignition timing a little, and see what happens.

What do your plugs look like?

elmo908

ok, I will try that. I just installed a new fuel filter incase that was clogging the flow. Would anyone back up marvel mystery oil. I already ran about one third of a can of seafoam through the brake vacuum line when I got back from the ref today. I am going to throw in some fresh coolant as wel. I know this is a dumb question, but how do I adjust the timing? I had a honda shop look over everything before I took it in and they advanced it to 17 degrees.

ddd4114

First make sure there is no load on the engine (turn off your A/C, etc). Jump the service connector, start the car, then just adjust the distributor to what you want. Tighten the bolts, turn off the car, remove the service connector, and you're good to go.

You have a timing light, right?

elmo908

Yes I have a light. So if I am looking from the passenger side to the driver side of the car, will turning the distributor counter-clockwise retard the ignition timing? I would assume so just looking at the firing order but I just would like to confirm this. Thanks for your help ddd4114.

boostedcivicsir

i like the manowar avatar.
black wind fire and steel.........nice...

you are spot on on the Nox. nice. on everyone of the lexus's it is always a sticking egr valve.

we also use top engine cleaner ( thats the gm version of sea foam)

for advancing and retarding the dizzy, looking at the cap, toward the firewall is advance toward the rad is retard.

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostedcivicsir &raquo;</TD></TR><TR><TD CLASS="quote">i like the manowar avatar.
black wind fire and steel.........nice...</TD></TR></TABLE>
You know it

They're an awesome band.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostedcivicsir &raquo;</TD></TR><TR><TD CLASS="quote">for advancing and retarding the dizzy, looking at the cap, toward the firewall is advance toward the rad is retard. </TD></TR></TABLE>
Yup, you beat me to it. I couldn't find my picture...

boostedcivicsir

alls i can say is thank god for the boneyard. i have heard more new to me music in the last year and a half than i have heard in a long tme. king of kings is pretty good too. i am still a manowar poser. havent heard everything from them.

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostedcivicsir &raquo;</TD></TR><TR><TD CLASS="quote">king of kings is pretty good too. i am still a manowar poser. havent heard everything from them.</TD></TR></TABLE>
King of Kings by itself is a great song, but the album wasn't so great. I still like their first album, Battle Hymns, the best.

boostedcivicsir

hope you fix the Nox issue. not to thread jack now on pm's.

elmo908

ha ha, it's cool dude. We are but men