Emissions retest another failure - Page 3 - ZR-1 Net Registry Forums

XfireZ51 · 03-10-2009

Maybe put in a next step hotter plug.

Sgreg · 03-10-2009

Quote:

Originally Posted by GOLDCYLON

Ok fellas WTF is going on

1st Failed test with a bad drivers side factory Cat and DRM chip

Standards are 1.00 for HC
12.00 for CO
2.50 for NOX

Results

HC: 1.51 Fail
CO 8.38 Pass
NOX 2.71 Fail

2nd test with Jeal headers with Magnaflow cats and DRM chip

HC: 2.34 Fail even worse now
CO 8.86 Pass
NOX 2.54 Fail

Is it because of DRMs chip and mods? I still have the factory prom. What does the group think? Help

D, I've got the same set-up. You cannot pass with a mod chip. Put the stock chip back in for the retest and you will pass with flying colors.

Aurora40 · 03-10-2009

Quote:

Originally Posted by tomtom72

Okay, taking a deep breath and thinking out loud.....the stock PROM's fueling is rich. I get that from Mr. Haibeck's web site, if I understand what I was reading....

He's talking wide-open throttle though. No matter whos chip you have, closed loop part-throttle on an emissions test should be the same.

I have also wondered about these metallic cats and how well they work. I have to take the VA test soon, hopefully they work well enough, but I have my doubts.

I wonder if swapping bullet ceramic cats in for the test would help enough to be worth it?

GOLDCYLON · 03-10-2009

Ok update.... Went to see my friends house Fred (A forum member) heres what we looked at Fuel rail pressure about 42 Lbs Constant and holds after car shut off, Ruled out fuel pressure, surging and Injectors. Put in the stock 91 Prom. Pulled plugs on Driver side two a little loose but nice even burn on the set (Light brown). Pulled plugs passenger side two loose plugs hand tight and suspect oil fouled. Two completly oil fouled #2 and #6 exceedingly saturated, could not even see the electrode on the end of the NGK irdiums they had about 25K on them. Put in a fresh set on non Tappered flat ACs as they were all I could get my hands on. What would cause one side to oil foul before the other. Fred suspects two week cylinders or seals under camcover?

The car with the stock prom idles about 650-700 with Rippies Prom it idled about 850-900. Would the Prom and the plugs as stated be enough to hose the test? From my view it should help but would it be enough?

flyin ryan · 03-11-2009

Quote:

Originally Posted by Aurora40

He's talking wide-open throttle though. No matter whos chip you have, closed loop part-throttle on an emissions test should be the same.

Allowing the fans to come on later will help get the engine a little bit hotter, at least on the way to the test. A hot day wouldn't hurt the cause either.

flyin ryan · 03-11-2009

Quote:

Originally Posted by GOLDCYLON

What would cause one side to oil foul before the other. Fred suspects two week cylinders or seals under camcover?

How many miles do you have on, could just be the valve seals being tired.

GOLDCYLON · 03-11-2009

Quote:

Originally Posted by flyin ryan

How many miles do you have on, could just be the valve seals being tired.

102K Its my daily driver Ryan. Jeffvette suspects the PCVs are part of this problem but without a doubt the valve seals are tired as well. GC

jonszr1 · 03-11-2009

i think jeff has hit on the problem , we too often dont pull the pvc valves and the rubber connector at the back of the motor and clean it out . i would definatly pull that and the valves and clean them just before you go . GOOD luck hope ya pass . i hate having that junk over my head

Nick · 03-11-2009

GC, where are the cats mounted? On my '94, the Random Tech metallic substrate cats are mounted directly to the Jeal header collectors. I can't believe they don't get hot enough in that location. Also, I'm running a Haibeck chip. Car has passed emissions in WA better the last two times run than it did when stock.

flyin ryan · 03-11-2009

Quote:

Originally Posted by jonszr1

pull the pvc valves and the rubber connector at the back of the motor and clean it out .

Could be, for sure. my thinking regarding valve seals were you said some plugs were good, some were o.k., some were bad...with PCV valve(s) my thought is it shouldn't be so hit & miss on the plugs

03-10-2009	#21
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,683	Re: Emissions retest another failure Maybe put in a next step hotter plug.

03-10-2009	#24
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,120	Re: Emissions retest another failure Ok update.... Went to see my friends house Fred (A forum member) heres what we looked at Fuel rail pressure about 42 Lbs Constant and holds after car shut off, Ruled out fuel pressure, surging and Injectors. Put in the stock 91 Prom. Pulled plugs on Driver side two a little loose but nice even burn on the set (Light brown). Pulled plugs passenger side two loose plugs hand tight and suspect oil fouled. Two completly oil fouled #2 and #6 exceedingly saturated, could not even see the electrode on the end of the NGK irdiums they had about 25K on them. Put in a fresh set on non Tappered flat ACs as they were all I could get my hands on. What would cause one side to oil foul before the other. Fred suspects two week cylinders or seals under camcover? The car with the stock prom idles about 650-700 with Rippies Prom it idled about 850-900. Would the Prom and the plugs as stated be enough to hose the test? From my view it should help but would it be enough? __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V Last edited by GOLDCYLON; 03-11-2009 at 03:27 PM.

03-11-2009	#28
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,406	Re: Emissions retest another failure i think jeff has hit on the problem , we too often dont pull the pvc valves and the rubber connector at the back of the motor and clean it out . i would definatly pull that and the valves and clean them just before you go . GOOD luck hope ya pass . i hate having that junk over my head

03-11-2009	#29
Nick Join Date: Jul 2005 Location: Auburn, Washington Posts: 585	Re: Emissions retest another failure GC, where are the cats mounted? On my '94, the Random Tech metallic substrate cats are mounted directly to the Jeal header collectors. I can't believe they don't get hot enough in that location. Also, I'm running a Haibeck chip. Car has passed emissions in WA better the last two times run than it did when stock.