Hi all,

I am new to join HT, although I've done a search and notice that RotaryBzzzz is the guy to talk to about this stuff, but anyways. I have an 88 Accord Lxi (no mods) 5spd. and failed the emissions test twice over CO%.

My numbers are as follows...

2nd trip to jiffy lube:

25/25 test

HC ppm - 44 (181 allowed) pass
CO% - 1.41 (1.16 allowed) fail
NO ppm - 146 (1313 allowed) pass
rpm - 2861 (3000 max)
CO+CO2 - 14.0 (6.0 min)

50/15 test

HC ppm - 13 (187 allowed) pass
CO% - 0.01 (1.05 allowed) pass
NO ppm - 693 (1438 allowed) pass
rpm - 1763 (3000 max)
CO+CO2 - 12.5 (6.0 min)


he took the old test, but the reading from that one (the first time i went in) the CO% was 2.21 (on 25/25 test). I did the following between the 1st and 2nd testing:

-changed plugs, wires, rotor & cap (honda dealer parts)
-removed air filter and resonator
-changed oil

it brought the CO% down considerably, but it still isn't enough. i was told that cleaning the EGR ports and TB would be the best bet. i will try that this weekend. to see if that helps.
can anyone think of anything else that could help it run less thick as it's doing?

Thanks for your help.

 

Try resetting the ecu right before you take your car in for testing. Also, maybe you need a new catalytic converter. Try borrowing one from a friend if you don't have the money.

 

borrow a converter? lol