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#11 | |
![]() Join Date: Oct 2019
Location: California
Posts: 43
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Thanks, Don |
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#12 | |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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If 2009 was the last time, I assume you got all the old gasoline out and put all fresh gas in. I also assume, since you previously got it smogged there, you had it tested with the power key off, even removed, so that secondaries don’t operate. H ![]()
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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#13 | |
![]() Join Date: Oct 2019
Location: California
Posts: 43
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Can't remember about the fuel but I think I put the 5 gal or so that was pumped from the tank in my Denali - may have put it back in the ZR-1. Filled the tank completely before the first smog - that was before I pulled the plenum and she wasn't running very well. Only failed the Nitrous Oxides test on the first smog. HC and CO were well under the limits. After fixing the vacuum leak and installing new injectors I put another 10 gallons in before the second test. That's where the HC fails as well as NO. Both CO and HC emissions jumped way up after the plenum pull and new injectors. NO came down a bit. Even though CO jumped up it is still half the max. Cheers, Don |
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#14 |
![]() Join Date: Apr 2007
Location: Northern VA
Posts: 2,655
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Imagine it will be tough to get through current Cal emissions test without EGR. That was my experience in Northern VA which has the same limit values
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Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake |
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#15 | |
![]() Join Date: Oct 2019
Location: California
Posts: 43
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As an update, I checked the ignition today - spark seems good on all 8. Also checked the A.I.R system using the tech 1. I can hear the pump come on for a few seconds and the O2 sensors drop to 0 mV on the left and 18 mV on the right. Seems to be working OK. When doing the spark check, I did notice a hissing sound near the rear of the engine that lasted for 10 sec or so after shutting down. Something leaking? Is this normal? Will investigate further. Cheers, Don |
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#16 |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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What injectors did you install? I think I asked before but are you smog testing with the power key off or out of the car?
H ![]()
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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#17 |
![]() Join Date: Oct 2019
Location: California
Posts: 43
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#18 |
![]() Join Date: Oct 2019
Location: California
Posts: 43
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Got advice from Marc and I'm in the process of changing the O2 sensors. Left one was easy. Got the right one out easily but i am having difficulty getting the electrical connector installed. Another older thread suggests removing the k-frame brace. There are 4 bolts attaching the brace to the frame and a nut that appears to be attached to the engine mount. Does this nut get removed too?
Any ideas on how to get the connector re-connected? Planning a long run with CRC 05063 after the O2 sensor is re-attached then another smog. Cheers, Don |
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#19 |
Join Date: Aug 2005
Location: Fishers, IN
Posts: 809
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Bfxb was not specifically different for emissions. That likely won’t make a difference for you. Save the money.
Sent from my iPhone using ZR-1 Net Registry
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Todd ____________________________________ *** our email address has changed! info@pepmeierengines.com pepmeierengines.com Friend us on Facebook too: www.facebook.com/profile.php?id=100011443683384 Pepmeier Engine Development |
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#20 |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Yes, the nut has to come off. While it is the nut for the engine mount, it and the “K” member do not support the engine. After you have the O2 sensors in take it for a long hard drive to get the cats good and hot. Its likely the cats got a bit contaminated from that old gas, long inactivity and frequent startups without really driving it. When I still lived I CA I found that a few good full throttle runs to redline immediately before taking to the smog station brought the numbers down somewhat.
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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