| Re: High HC emissions -- redux |
Subject: Re: High HC emissions -- redux by josephf31 on 2013/7/28 21:46:17 Well, here is the latest, but NOT the greatest; Brought the car back to NJ inspection yesterday, and failed (again) but this time for high HC at high idle; reversed results of the first fail. Here is a recap; First fail; @idle HC 491 allowed 220 (FAIL) CO 0.88 allowed 1.20 CO2 8.5 O2 8.2 @high idle HC 58 allowed 220 CO 0.53 allowed 1.20 CO2 10.7 O2 5.4 Second fail; @idle HC 199 allowed 220 CO 0.56 allowed 1.20 CO2 14.0 O2 1.1 @high idle HC 446 allowed 220 (FAIL) CO 0.71 allowed 1.20 CO2 14.5 O2 0.4 I don't get it, and I'm ready to throw in the towel and bring it to my mechanic. Changes between tests: New Magnaflow catalytic converter -- also fixed exhaust leak and replaced air pump hose New O2 sensor New air intake bellows Change oil and filter Clean air filter Clean injectors Check timing (was at 7, spec is 6) Observations; I have had an Accel foam filter for years, it passed with this filter before, I cleaned it but did not re-oil it so it is almost dry. I was getting a code 32 for (literally) years, now I don't get it any longer so there is no need to pull over before the inspection and disconnect the battery briefly to clear the check engine light. There is a very slight miss at idle which I can't trace down, it's been there for quite some time not sure it has anything to do with the numbers. So, what in the heck caused the changes in numbers, and most specifically, the "new" fail, HC at high idle? I am baffled. Any help is appreciated....thanks all. |
