Smog and emissions for 1970 Fury III

[Nhranut]

I live in Las Vegas, NV. I just bought a very clean 1970 Fury in San Berdino, CA. A smog test is required here. It failed. It only has 59k miles. 318 w/ 2brl carb. The car originally was bought in Indiana. Did this car come with a smog pump? I fear it was removed. It has after market dual exhaust installed on it. Will it ever pass without a smog pump? Any ideas?

 

[MrMoparCHP]

I live in Las Vegas, NV. I just bought a very clean 1970 Fury in San Berdino, CA. A smog test is required here. It failed. It only has 59k miles. 318 w/ 2brl carb. The car originally was bought in Indiana. Did this car come with a smog pump? I fear it was removed. It has after market dual exhaust installed on it. Will it ever pass without a smog pump? Any ideas?

Not in 1970, all your car has would be a hose from the breather cap and the air cleaner. This may have become standard on all cars by 1970 not just CA cars, in 67 it was only on CA cars.
There are other differences internaly, different distributor, carb, cam... but no smog pumps.

Alan

 

[polara71]

Do they take into account the car is 43 years old and run it through the requirements of 1970?

 

[Nhranut]

Requirements are a lot lower for the older cars. I was shocked when I learned that NV is more stricter than California. Vehicles older than 25 years there don't require a smog. Here 1968 and newer require one. Hydro carbons have to be 750 or lower and it was 3100.

 

[goodneighbour]

Have any friends out of State?

 

['69FuryIIIConvertible]

If you have high HC's then your car is a good indicator of poor combustion, Hydro Carbons are unburned fuel deposits.

Best thing to start with is your ignition system, a full tuneup would be a VERY good idea (new plugs, cap, wires, rotor, Points, etc) and make sure the plugs you purchase are in the correct heat range, and make sure they are correctly gaped.

Have the carb adjusted as High HC levels is usually a result of running Rich or lean

Check your vacuum, make sure vacuum is good and that all vacuum lines are good, Vacuum leaks can cause lean fuel ratio.

Replace the PCV (Positive Crankcase Ventilation) valve, if it's not flowing correctly it too can cause a Lean/Rich issue.

If after all that is done your still way over..............I hate to mention it but you may be experiencing bad rings.

Hope that helps.

Nick

 

[tbm3fan]

Requirements are a lot lower for the older cars. I was shocked when I learned that NV is more stricter than California. Vehicles older than 25 years there don't require a smog. Here 1968 and newer require one. Hydro carbons have to be 750 or lower and it was 3100.

That was originally how the law was supposed to read. However, it was changed and only cars 1975 and before are smog exempt.

 

[tbm3fan]

As a comparison here is the report on my 68 Mustang which was tested in 1997 just before the law was enacted exempting the car. It has a 289 and there was 7,000 miles on the engine.

2500 rpm run

Max allowed/ Average/ Measured

HC ppm 0600/ 0163/ 0047

CO% 4.50/ 1.70/ 0.14

Rpm 2570


Idle run

HC ppm 0650/ 0192/ 0308

CO% 5.50/ 2.30/ 3.57

Rpm 649

Idle circuit a little rich but the main circuit as seen looking at plugs using an electronic ignition is very good.

 

[MrMoparCHP]

That was originally how the law was supposed to read. However, it was changed and only cars 1975 and before are smog exempt.

Common misconception
Smog Check Exempt.
Cars must still meet smog and have all parts installed…
Now how are they to know if there is no check required?
Now if your car is smoking and you get stopped it will need to pass smog and that includes an under hood check with all parts in place.

Alan

 

[tbm3fan]

Smog check, smog test, smog exempt all the same in my book

 

[polara71]

Registered as an antique or classic, will it become inspection exempt?

 

[jt66]

probably just needs a good tune up and a carb rebuild.

 

[Nhranut]

I appreciate all your comments. Things I discovered: I misunderstood the rules for registering a Classic Vehicle. I should have never attempted a smog. Once it fails they make you wait 90 days, PERIOD!
To get it to pass a wise tester pulled the vacuum hose off the vac. advance and it passed easily.
Case closed

 

[polara71]

NICE !!!!! :yaayy: