Topic: Larimer County, CO Emissions (1st Gen)

[COwheeler]

Hey guys,  I'm Looking for some good info on Larimer County Emission results.  I have a 79 and tore all the bs emission stuff off as soon as I bought the truck.  From what I've been hearing from friends (not toy drivers) they are not popping hoods on old trucks.  The ladies at the local DMV are very helpful at answering questions but cannot tell you everything you need to know.  For legal reasons obviously.  I have a puff of blue smoke on fire up and some more smoke as I'm grabbing gears going down the road.  They will not be testing my truck on the dyno but I am still worried I am going to have to turn this sweet truck into a trailer queen.  Only 140,000 on my 32 year old truck.  Please let me know if you or your friends have been as stressed out about this as I am.

Thanks in advance,
Matt

[PhantomD aka Zach]

My friend had a first gen a few years back and they required the air pump, she had to hook it up and make it look like it was plumbed to the exhaust. She could of had other emissions stuff too, I was a bit of a engine newb back then

They did indeed open the hood, this was in boulder county with the envirotest people though

[COwheeler [OP]]

All right, I had the most epic fail... as in barely failed.  Lil toy did awesome on the sniff test.  They didn't dyno it, but I had every tech in the shop looking my truck over.  Top to bottom.   They did me pretty good.  Only thing they called me on was my smog pump.  It only cost 15 bucks for the test for 81 and older.  Get one free retry.  The header and egr block off plates made them look pretty close but all they want to pass is the air pump.  Half hour of work tomorrow will finish it.  Fingers crossed.  They also don't test Nox on the older trucks.  Hell even my 32 year old gas cap passed!! 

All I did to prepare for the test is sea foam(carb and vac), seal conditioner, mid grade fuel and a valve adj.  Very happy with my fail!!  let ya know how it goes tomorrow.

[Volcom]

Passing emissions is a PITA.  Good job getting a 32 year old truck to pass 

I'm in Pueblo County so no testing for me    My brother (lives in Highlands Ranch) registers his Jeep at my parent's address here in Pueblo to avoid the emissions.

[Zs Confederate Toy]

Passing emissions is a PITA.  Good job getting a 32 year old truck to pass 

I'm in Pueblo County so no testing for me    My brother (lives in Highlands Ranch) registers his Jeep at my parent's address here in Pueblo to avoid the emissions.

No emissions here in Bailey either. Gotta love it cuz I know for sure my truck wont pass

[COwheeler [OP]]

Well just got back from the retest... failed...high CO.  I put the air pump in and made it look like it was all hooked up (suckers).  I passed the air injection portion no questions asked.  But when they resniffed it the CO jumped up a bunch of points.  I hooked nothing up to the engine from the air pump.  Making me wonder what changed, half tank of gas, its about 90 degrees out today, time for an ice cold PBR and think on it some.  Air/fuel mixture screw?  Has to be simple.

[COwheeler [OP]]

Ok thought about it for a bit.  When I tested on Friday my idle was sitting at 1000,  today it was rolling at 850.  I failed the idle part of the CO test today.  Think that has to be the issue.  Gonna bump it up to a grand and make sure it stays there for the test tomorrow.  Darn webers can't make up their mind what they want to idle at... fingers crossed

[COwheeler [OP]]

I PASSED!!!!!!!!!!!!!!!!!!!!!!!!!  Got it done!!!!!!!!!!!!!!!!!!!!!!!!  Time to tear this junk off and store it in a box till next year.  If anyone has any questions for me feel free to ask.

[OldGold3VZE]

Matt, it's Eric from Loveland.  Thanks for posting.  I called the emissions center for details on my build, and they too said I would need the air pump, but it can be from the 84 (the year of my engine).  I guess in 84 it was a lot smaller, and not a belt driven pump.  You went to the place by WalMart in between Loveland and Ft. Collins, right?

[COwheeler [OP]]

Yup, by wallyworld.  They don't really know whats going on.  Just has to look legit.  The only private places for testing are in Denver.  I have some garage stuff for ya if you want it.  Have you an aluminum bench top and some stools and chairs.  Let me know.

[Quick Draw]

Great job getting it to pass!  Larimer County started emissions testing right as I was putting a 5VZ in my 1st gen, so I lucked out.  It was a pain to jump through their hoops for the engine swap, but now it passes really easily.

[COwheeler [OP]]

Sweet man, Good job.  Where you at?

[Quick Draw]

I live in Bellvue/Laporte area and work/go to school in Fort Collins.  You?