1990 RT4WD Failed Emissions

joshy

I am in WA state has failed twice now.
I changed plugs (NGK 5632 BCPR6E-11), oil (Castrol), oil filter (Wix) and wires (Bosch) between the first and second test.
Car has 230k, runs strong does smoke.
Has aftermarket header and exhaust
No CEL
What needs to be fixed? or what is causing to fail

First Test:

HC (PPM)
Cruise Limit 220
Cruise Emissions 330
Fail
Idle Limit 220
Idle Emissions 179
Pass
CO (%)
Cruise Limit 1.2
Cruise Emissions 2.61
Fail
Idle Limit 1.2
Idle Emissions 1.08
Pass


Second Test

HC (PPM)
Cruise Limit 220
Cruise Emissions 449
Fail
Idle Limit 220
Idle Emissions 259
Fail
CO(%)
Cruise Limit 1.2
Cruise Emissions 1.82
Fail
Idle Limit 1.2
Idle Emissions 1.03
Pass

kylerwho

you mention an aftermarket exhaust so is there an aftermarket cat as well or just straight pipes?

jasnall

Ya, if your catless I would start there.

joshy

its a custom garage made exhaust with stock cat.

turbo_teg

i have a brand new single wire bosch o2 sensor if u want it. or if u cant get her to pass im just over the hill and we dont have emmisions here so u could just sell it to me

bam-bam

http://www.smogtips.com/failed-emissions-test.cfm

Read up.

DRMORTY

I am glad FL did away with emissions... Used to be a real pain...

turbo_teg

cant u register it as non running? im prolly wrong but i swear thats what my buddies were doing years ago to get around this with there turbo'd cars.

xkenx

why did your hydrocarbons go up so much? check your o2 sensor and your cat.. that would be the first place I'd look.

SiWagon

High HC usually means poor ignition system.
It could be the CAT since you said you're Smokin.Oil& high HC kills CATs.If you need a CAT.There's a shop on Ebay selling brand new ones for $170.
:arrow: If you're buying a new CAT.Make sure it's a CARB approved.The cheapie $100 or less CATs(hi flow too.) only last about a month.The aftmrk CARB CATs are required by California LAW to last I think 5-7 years.
This may help a little bit.Remove the Cap & use a screwdriver & scrape off the white corrosion off the inside cap terminals(4).I always do this just b4 going to the smog station.Check to make sure your rotor is the newer rotor with fins that prevent sparks from arcing below.It looks round with fins that look like sliced pie.Older rotors don't have these fins.Make sure there is a shield below the rotor that prevents arcing to the lower area(where the ignitor is) below the rotor.Mechanics remove these for some stupid reason.

fast freddy

How much does it smoke?? What color smoke blue or black? My wagon had similar numbers, I had to replace my motor because it smoked.

Hc's = unburnt fuel

If black smoke try a o2, a tune up and check your timing. If blue u may be in trouble. Good luck.