Failed CA TEST ONLY, need some advice

[1BADDAM]

HC's and CO way over with hardly any NOx


---|RPM|CO2%|02 %|HC Max|Meas|CO Max|Meas|NOx Max| Meas|
15|2029|13.9 | 0.00 |- 112 -| 144 |- 0.72 -| 1.12-|- 778 --|- 26 -|
25|1678|13.8 | 0.00 |- 86 --| 157 |- 0.60 -| 1.15-|- 717 -|- 37 -|


I was running the Thrasher "smog" chip, Fuel Pressure was at 43 psi/ line off. Translator idle/WOT is a zero settings. Cat is original, but only has about 6K miles on it.

BLM's were in the 105 to 118 so I know I'm rich

What would be a good FP setting ? Thinking 37-39 psi

I know the smog chips shuts off the fans to drive the temps up as it did, 190's, but does it premeturley lock the convertor ?

The convertor stayed locked on one of the 25mph tests and it stayed locked during deacceleration once on the way over there, locked normally on the way home. I just replaced TCC solenoid this month and haven't had one problem, since today when I intalled the smog chip.

TIA

 

[Buicksx3]

You didn't post how old the O2 sensor was-- is it still good? I would crank the fuel down 2-3 lbs as well. I smogged my car (Test Only, as usual) last Friday and it passed with a TE45a, 72#ers, fresh plugs, and a fresh cat.

Good Luck!
Morgan
'87 GN with a bunch of stuff I've bled on

 

[1BADDAM]

O2 is about 6 mo. old, cross counts look good on it. Its a Denso sensor and has about 20 gallons of race fuel through it. Guess it wouldn't hurt to change it out with a fresh one. Thanks for the suggestion.

 

[gofstbuick]

it's running rich, lower the FP.

 

[1BADDAM]

Passed , barely

Lowered the FP to 38 psi line off, changed plugs and 02.



---|RPM|CO2%|02 %|HC Max|Meas|CO Max|Meas|NOx Max| Meas|
15|2067|14.5 | 0.10 |- 112 -| 101 |- 0.72 -| 0.24-|- 778 --|- 15 -|
25|1662|14.6 | 0.00 |- 86 --| 84--|- 0.60 -| 0.13 |-- 717 -|- 56 -|