How's it going everyone
So i just got this 1995 Honda civic CX and im planning on swaping the motor for a k20 so i figured that i should smog the car while its got the stock engine and easy (so i wonte have to worrie about it for 2 years)
and i have to so i can register it in my name anyway

well i went to the smog shop and they test it............FAILED
they tell me i need a new head......or a new cat.......and the CX CAT costs alot because it is part of the exhaust manifold........so i say can i just add another one under the car that way i'll have two CAT's.......he says that it should pass if i do that......ok so i got have another one added

I go back to test it again and.............FAILED again
now he said it could be the MAP sensor or the o2 sensor

i passed the high speed part of the test but not the low speed

HELP ME pass this thing so i can finally take it out and drop that k20 in


Modified by K20A_EH at 7:17 PM 11/15/2006


Modified by K20A_EH at 8:41 PM 11/15/2006

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by K20A_EH &raquo;</TD></TR><TR><TD CLASS="quote">HELP ME pass this thing so i can finally take it out and drop that k20 in...</TD></TR></TABLE>

k20-t?

 

k20a

 

take it to a TEST ONLY place it matters i think there thinning out your pockets,

 

no the place is
"If you dont pass, you dont pay"

so i have'nt payed anything yet

 

the only thing i can think of is doin a 4 gas analyer(sp) so see what your emmsions are at.

 

why don't u post the numbers out so we can see it what is wrong with the car? HC CO Co2 Nox

 

yeah sorry about that
i'll post when i get home

 

HC: 15mph: 7
25mph: 3
CO: 15mph: 0.00
25mph: 0.01
Co2: 15mph: 13.90
25mph: 13.96
o2: 15mph: 0.20
25mph: 0.18

NO: 15mph: 0972 max is 731
25mph: 0426 max is 798

this is with the stock CX cat and a under car cat and it was on 91 octane

 

Your nox is high....means your engine could be running very hot (leaning out) or your cat(s) is/are pooched. Try and richin her up a bit.

 

Failing NOx in smog checks for Hondacars is a very commen problem in pre OBD2 cars as they are nortorious lean burners and fuel is not refined to meet their air/fuel ratios. Anything you can do to lower combustion chamber temperatures will help. Larger injectors, Programable PCM, What ever works!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdm_eg06 &raquo;</TD></TR><TR><TD CLASS="quote">Your nox is high... try richin her up a bit.</TD></TR></TABLE>

Good luck dude!

 

should i add a B&M fuel pressure regulator or is there someinthg easier

 

how many miles on the engine. if there's a lot of carbon build up on your pistons it'll raise your compression ratio a little which will cause higher combustions which causes NOx. try running some sort of injection/combustion chamber cleaner.

 

125,000miles

i'll try the cleaning products

 

I feel SO sorry for you guys in Cali. I have a b18 in my civic and i wouldn't even think twice about not passing emissions. This will make you pass for sure, move

Seriously though, I would try the injector/fuel cleaner, check the spark plugs (might help), air filter, cat. Thats what I have done in the past.

 

i have a short ram intake
and new plugs, plug wires, ditributer cap, rotor

 

Is 91 octane what you should be running in a stock 95 Cx?

Have you checked the timing with a timing light?

 

question after u put the second cat on. did u heat up the engine real hot and u should able to smell that new cat smell? Try heating up the engine for few mins above 1500rpm then do smog right away. don't shut down the engine.
double check on the timing and whether u have enough coolant in the system.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by K20A_EH &raquo;</TD></TR><TR><TD CLASS="quote">k20a</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FuNkDrSpOt &raquo;</TD></TR><TR><TD CLASS="quote"><FONT COLOR="red">100%</FONT> no, you can't pass legally....
You're forced from this point on to pay extra <FONT COLOR="green">$$$$</FONT> for smog tests....</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spork motorsports &raquo;</TD></TR><TR><TD CLASS="quote">take it to a TEST ONLY place it matters i think there thinning out your pockets </TD></TR></TABLE>