Failed emissions in TN. High carbon!

As my first post I wanna say hello to the entire community thanking you in advance for any help you give me.

My 87 GN, bone stock, failed emissions. Guy said I have high carbon levels. No service lights on or problems that I'm aware. I did find a vacuum hose off that fixed my idle. I did notice oil inside of my tube exiting the intercooler going into intake when I removed it to paint. Hope that's not a problem. Any info would be awesome guys. Thanks, Chris

LOL I like the 'Thumbs up' right next to "Failed Emissions"...

I wish I could be that positive about emissions testing! :biggrin:

In CA, this is where things are going...





If you can't tell, its a roadside smog checkpoint.

Good luck figuring out your problem, I dunno crap about that but there are plenty of smart dudes on this board who will help you out. You're in good hands on this forum.

What did vacuum line go to? get breather for passenger side valve cover and that will keep a lot of the oil out of the innercooler. If that vacuum line was to fuel pressure regulator that could cause your problems. Less vacuum to regulator raises fuel pressure from 7-10 lbs. How many miles are on car? Last tuneup? How bad did it fail? Post readings.

Roadside checkpoint Dont they have smog checks for lawnmowers out there. I have been out of the emissions ring since Illinois did away with rolling cars .

When did they start testing in TN? What part of TN are you in?

how much did you fail by? Post your emissions numbers you got from your failed test.

i failed nevada smog test with a tt emissions chip lol

Have ya tried a can of sea foam?

like smog

I'm in TN, but my TTA is registered in Ky. No emissions checks in hick towns, so I don't worry. Can you get a antique car status plate and forgo smog check in TN.? Good luck. Let us know how you out.

They are getting rid of dyno testing here in Utah next year.

There's smog test here in TN??? Where??

in nashville and surounding county's you have to pass an emmissions test to renew your tags

scott

Post your emissions results from your test. I need the CO, CO2, NOX & HC levels. Do you have an IM240 test or is it the sample test where they run the car at 15/25mph. If its the sample test, I need the 15 MPH and 25MPH results.

List anything else it might have failed for like in the functional test w/the EGR or something.

Sorry everybody, this is so much different than facebook, so i'm so lost. haha. I will find my test numbers and post them. New to the Grand National all together and love you guys for the help. Also got a miss or whatever you call it, seems like fuel, maybe not. idles way down, almost quits then way back up. give gas misses then revs out with a small uneven miss but very faint, after cars warm it almost goes away.. I may sound crazy but thanks for the info either way, promise i'm not :O(

I pull into the building, they stick something in my tailpipe, tell me I'm not good enough and take my money.. feel used,, I'm guessing its the IM240 cause its all while sitting still. Thank you for the help, I will get the results.. Anyone heard of the denatured alcohol tricks in gas??? not trying anything till I talk to you smarter than me guys..

If sea foam makes it do what your pictures showing, I'm buying a case.. No buddy, I'm not putting anything in it till i hear advise. I've used it but really new to turbos and the difference if any in maintence..