Failed smog w/ stock Miata; options in Sac area?
#1
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Car Info: 2002 wrx, new (to me) 2006 exige, low n slow miata
Failed smog w/ stock Miata; options in Sac area?
Hey guys, my daily driver Miata failed its smog test this morning as a gross polluter, even though it's completely stock with only 140,000 miles on the clock. I bought it a year ago, at which time the original owner smogged it without issue, and since then I've changed the spark plugs, air filter and timing belt. My numbers for CO are fine, but HC at 15 mph is high and NO is off the charts at both 15 and 25 mph.
I'm new to the Sac area, but what are my options as far as repair? Can anyone suggest a good shop that will charge me a fair amount and actually know what needs to be done to make it pass smog?
Thanks,
Andrew
I'm new to the Sac area, but what are my options as far as repair? Can anyone suggest a good shop that will charge me a fair amount and actually know what needs to be done to make it pass smog?
Thanks,
Andrew
#5
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Car Info: 2002 wrx, new (to me) 2006 exige, low n slow miata
Cool, I'll find a muffler shop this weekend and try that.
I wish these morons at smog stations would be a little more helpful in providing advice as to why your car failed. Useless turds... i-Club on the other hand: uber helpful. Thanks, guys, I'll let you know how it turns out.
I wish these morons at smog stations would be a little more helpful in providing advice as to why your car failed. Useless turds... i-Club on the other hand: uber helpful. Thanks, guys, I'll let you know how it turns out.
#6
Get a new cat, run some injector cleaner through, get a clean tank of gas before you go and make sure you drive your car a while & its extra hot before you take it in, the hotter the cat is the cleaner it will come out.
#7
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Made an appointment for a new cat to be installed on Monday. Will get some injector cleaner today and start that in on my fresh tank of gas this weekend. Will top off with 92 octane before my retest and will heat the crap out of everything beforehand. Thanks again!
#10
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Gas with a higher octane (knock resistance) is less likely to ignite prematurely........in a motor that doesn't need it, it's less likely to combust completely, which means your HC count will be through the roof. Hydrocarbons = oil and gas. Either getting through the combusion chamber means more particulates, and that's one of the reason's you're running so high.
#11
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Car Info: 2002 wrx, new (to me) 2006 exige, low n slow miata
Alright, that makes sense. Thanks for that insight into the HC portion of it.
What's the cause of the NO being so high? Anything I can do for that beyond those methods already discussed (new cat, injector cleaner, new gas and hot engine)?
What's the cause of the NO being so high? Anything I can do for that beyond those methods already discussed (new cat, injector cleaner, new gas and hot engine)?
#13
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Car Info: 2002 wrx, new (to me) 2006 exige, low n slow miata
Car is a 1991, so it has an EGR system. I had this same issue (high NO) with my 93 Sentra SE-R, and a new cat didn't fix it, hence my question as to what would cause it to fail on the NO side.
I take it Bonster is Bonnie Weatherwax of TEAM Racing? Good idea, I'll send her a note.
Thanks!
I take it Bonster is Bonnie Weatherwax of TEAM Racing? Good idea, I'll send her a note.
Thanks!
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