88hondaccord

I didn't pass smog on this car i have if anyone can tell me anything about it please help i need to get the tags by the 8th the people wanted $175 to find out what it is i think its the CAT if anyone can help that would be great

thanks
1988 accord lx 2.0 ltr 2b carb




Everything but the 15 mph <U>NO (PPM)</U> passed
Good old CA


Modified by 88hondaccord at 11:19 AM 7/24/2004

IanCT

High NOx readings are sometimes attributed to a bad EGR valve, or component (blocked vacuum, hose, etc) relating to the EGR system.

How is the fuel pump? A lean air/fuel mixture can be caused by low pump pressure, causing high block temps. That can cause excessive NOx emissions as well.

Or as you suggest, clogged cat can be the problem as well.

Schmitey

I don't know **** about carburated but definitely check your EGR/vacuum lines. Clogged cat would smell like sulfur (wrotten eggs) and one would assume they would have said something.

Might try this to clean stuff up...
https://honda-tech.com/zerothread?id=902955

88hondaccord

Yea they said that it would cost them $175.00 to find out and thats a bunch of BS i know about cars i just dont know about these cars but yea anymore info from anyone would help. looks like the egr so far.....

Chiovnidca

Have you checked your ignitioon timing? Retarding it a couple degrees from stock will probably get you a pass.

92lsr

yeah a few degrees back and some carb cleaner and some guarented to pass smog should get you to pass