Smog... 75,76, & 77.

[Madgyver]

What states is this a requirement to legally drive your 75, 76 & 77 broncos on city streets?
What do yo do to get SMOG passed?

Just curious....

 

[EPB72]

In California 75 and older are smog exempt.76 and anything newer up to 1999 are required to pass visual,functional ,and tailpipe emissions{dyno tested unless directed for two speed idle test}2000 and newer test different on a different machine {DADS} visual,and functional,there is no tailpie tests..all obdII vehicles 96 and newer require to be plugged in to ALDL to test for incomplete monitors and stored trouble codes.ALL aftermarket parts must be CARB approved for application there installed on.

 

[SteveL]

Why are you asking? You bringing one back to the mainland for a visit? Not sure if you have smog requirements in Hawaii but if yours just visiting you shouldn't have a problem if your tags are current. That's as long as you're not running open headers or something crazy to attract attention. Depending on what state I would be more worried about safety check violations like bumper height and lift regulations. I think states can flag you for rust.

 

[Madgyver]

Why are you asking? You bringing one back to the mainland for a visit? Not sure if you have smog requirements in Hawaii but if yours just visiting you shouldn't have a problem if your tags are current. That's as long as you're not running open headers or something crazy to attract attention. Depending on what state I would be more worried about safety check violations like bumper height and lift regulations. I think states can flag you for rust.

Just curious what other states.

 

[SteveL]

Also like epb72 said in California any mods have to be carb legal and have the stickers and or paperwork. I dont think most other states have the visual test on smog. Just test the emissions.

 

[Broncobowsher]

AZ gets fuzzy. '67 and newer need testing but only in two counties, Maricopa and Pima. But you can get collector car plates (or historic, something like that) and don't need to pass. I recall there are some restrictions with the plates. Most who have this stuff live with the restrictions or ignore them. I live out of county, but in a testing area. There is a back door that allowed me to get exempted when my neighbors need testing.

Colorado had some based on locations as well. Friend had an old Buick and on the Easter range needed smogged. But with collector plates that was a one time check when he brought the car in and not a yearly check.

It can vary dramaticly even in a single state. My understanding was even in California location mattered. Out in the sticks it was a pretty basic check compared to inside a big city.

 

[SteveL]

A friend of mine has an older Mercedes he put vintage plates on to get around smogin ca. It's his dd. He said there is a mileage restriction but they never check.

 

[sprdv1]

Why are you asking? You bringing one back to the mainland for a visit? Not sure if you have smog requirements in Hawaii but if yours just visiting you shouldn't have a problem if your tags are current. That's as long as you're not running open headers or something crazy to attract attention. Depending on what state I would be more worried about safety check violations like bumper height and lift regulations. I think states can flag you for rust.

he gotta stick around and keep fishing and keeping the wife happy

 

[sprdv1]

For sure local/cities in CA are the worst..

AZ gets fuzzy. '67 and newer need testing but only in two counties, Maricopa and Pima. But you can get collector car plates (or historic, something like that) and don't need to pass. I recall there are some restrictions with the plates. Most who have this stuff live with the restrictions or ignore them. I live out of county, but in a testing area. There is a back door that allowed me to get exempted when my neighbors need testing.

Colorado had some based on locations as well. Friend had an old Buick and on the Easter range needed smogged. But with collector plates that was a one time check when he brought the car in and not a yearly check.

It can vary dramaticly even in a single state. My understanding was even in California location mattered. Out in the sticks it was a pretty basic check compared to inside a big city.

 

[dmplatt]

UT requires it on 75 and newer, visual and measured. Unless you are registered "antique." I've considered changing my registration to avoid the test even though it passes the measurement I don't have a cat and fail the visual inspection (depending where I go...).

 

[broncogt]

Also, In Arizona 75-77s are visually inspected that all factory smog hardware are still visually intact. It has to be there, but they dont test that it works.

They dont open the hood on my 74. I always chuckle when the try to put my fuel cap on the pressure tester.

They actually put it on a rolling road/chassis dyno. It has to pass low cruise(45MPH) and idle.

I missed my September due date for registration because my C4 started slipping. Something in the forward clutch crapped out and Im afraid to drive it till it gets fixed.

Thanks for reading my blog post

 

[Broncobowsher]

I think that is the same in all the testing locations. They will inspect (for those that need to inspect) and they will sniff. If it looks correct and it sniffs clean, doesn't matter if any of the stuff is actually working. But it is clean and looks correct.

I've known of people who keep a spare exhaust system around that has a pair of cats. Gets installed for testing. Regular exhaust goes back on. Lately it has been just put a nice high flow aftermarket cat on and leave it. They don't hurt power and make it nicer to be around with the engine running. I have never heard of anyone failing visual because there was a cat added that wasn't originally there.

 

[jckkys]

I obviously live in Pima Co. (Tucson) and have been dealing with this crap since the mid '70s in Ill. and Az. I finally put a '68 frame and glove box lid in my '77 that now has the '68 title. The emission compliance center at DMV OKed everything. So legally it's now a '68. I can easily pass the sniff test for '68s and the only visual equipment they can look for is PCV. It's not the easiest or cheapest route, but it's bullet proof legally, in any state. It only requires buying 2 Broncos.

 

[TDubya]

I'm in California but am lucky in that I live in one of the few counties that doesn't require annual smog tests. I have not smogged the 75 since I purchased it in 1993 and its been registered every year.

 

[Rustytruck]

while you may get a pass from biannual testing it is still against the law to remove or disable smog equipment. its not an exemption. California is always looking out for you.

https://www.smogtips.com/remote_sensing.cfm
I have seen these set-ups twice, always set up on an uphill on ramp here in So Cal.

 

[TDubya]

while you may get a pass from biannual testing it is still against the law to remove or disable smog equipment. its not an exemption. California is always looking out for you.

https://www.smogtips.com/remote_sensing.cfm
I have seen these set-ups twice, always set up on an uphill on ramp here in So Cal.

I'll just stay here in the State of Jefferson then, no problem.

 

[JefeAZ]

AZ gets fuzzy. '67 and newer need testing but only in two counties, Maricopa and Pima. But you can get collector car plates (or historic, something like that) and don't need to pass. I recall there are some restrictions with the plates. Most who have this stuff live with the restrictions or ignore them. I live out of county, but in a testing area. There is a back door that allowed me to get exempted when my neighbors need testing

The historic plate no longer waives emissions inspections. Collector Insurance does waive it though and you never have to go back thru as long as you keep the policy in force.

Anyone in AZ need help with this let me know!

 

[No Hay]

The historic plate no longer waives emissions inspections. Collector Insurance does waive it though and you never have to go back thru as long as you keep the policy in force.

Anyone in AZ need help with this let me know!

I sure am enjoying this here with the Collector Insurance. It was always a multi week battle getting through emissions every two years in Portland.