Has Anyone passed the new stomp test?

[Steve Graham]

In AZ here, the state (FED?) has implemented a new lower standared for the stomp test, (SAE Snap Acelleration smoke test, J1667) from 40% opacity down to 20% opacity. My Dodge has always just passed the test with scores of 30-39% before. I'm basically stock, some minor tweeks to the smoke screw and only a little of the fuel screw turned in.
Any one out there stock or otherwise that passes the test limits?
I'm thinking of a 40 lb in spring behind the throttle :-laf to limit smoke.
otherwise#@$%!

 

[DVolk]

Has Anyone passed the new stomp test

They have been doing this quite awhile on the over the road rigs for the last 4 to 5 years , this started i think in calif .



That one there is minor were they will get you is on the dyno reading if your

makeing a noticible more amount of HP than stock , my guess is your in for a world of hurt in that area .



This country is getting more dictator like every day :{

 

[JLEONARD]

I've passed both tests in Ct over the past several years. Nothing to it really.

Nothing to worry about.

 

[CSkal]

Wouldn't the revised test only apply to certain years? For example, you cannot hold a 1960's gasser to the same standard that is used for a 2004 Honda gasser regarding tailpipe emissions.

 

[Steve Graham]

Wouldn't the revised test only apply to certain years? For example, you cannot hold a 1960's gasser to the same standard that is used for a 2004 Honda gasser regarding tailpipe emissions.

Thats exactly what there doing. They have cut the standard in half! I've been able to pass the test since it was inplemented, but now I'm going to have to tweek my Dodge to pass and then untweek it to make it driveable. That was one reason I got rid of all my old gassers. I hate the idea of having to put a second gen Cummins in my first gen just pass this stomp test.

 

[Greenleaf]

I hate the idea of having to put a second gen Cummins in my first gen just pass this stomp test.

Nope. You'll need one of them 30,000 psi injection, computer controlled engines.



If you still have the AFC connected, you can thread the gov screw in so there is little throttle travel as well as back the fuel screw out. Thread the star wheel up to the top. Install a OEM fuel cone set to leanest. It's a pita but if that's what you gotta do... ... ... .

 

[dpuckett]

If you have 40-49% opacity with near stock settings, something is MAJORLY off. 40% is blocking out the sun, or the headlights behind you. I'd get the injectors tested- chances are they arent up to snuff. Even with double stock fuelling, and smoky aftermarket injectors, I dont smoke more than 20-22% (my guess based on the 30% my old smoky 91. 5 put out), and that is too much for my liking.



Daniel

 

[btoscano]

I find it hard to believe they are mandating higher standards than the vehicles were designed to pass new. Sounds like its time to move or get your vehicles tagged outside the emissions testing area...



Brian

 

[btoscano]

Here is the current Arizona emissions availalbe on their web site. It may be outdated:



All 1967 and newer diesel powered vehicles registered within the emissions control areas of metro Phoenix (Area A) and Tucson (Area B) are required to be emissions tested annually. The only exception is for apportioned vehicles, which are commercial vehicles that are licensed in multiple states. Diesel vehicles pulling trailers will not be accommodated at the inspection stations.



Diesel emissions testing in Pima County and for light-duty (8,500 lbs GVW and less) vehicles in Maricopa County consists of loading the vehicle on a dynamometer and measuring the opacity of the exhaust plume. The measured opacity must not exceed the established maximum. In Pima County the maximum allowable is 30 percent opacity. In Maricopa County the maximum allowable is 20 percent opacity. (The maximum allowable is determined by the average elevation of the registration area).



Heavy-duty (8,501 lbs and greater) diesel vehicles in Maricopa County are tested using the Society of Automotive Engineers J1667 test protocol, commonly referred to as the "snap-acceleration test. " The test consists of measuring the opacity of three, wide open throttle, no-load accelerations from idle to maximum governed engine speed with the transmissions in neutral. The average opacity for the three accelerations cannot exceed the applicable standard for the model year of the engine. The maximum allowable for engine model year 1991 and newer is 40 percent opacity, for engine model year 1990 and older the maximum is 55 percent opacity.



Diesel powered vehicles may be tested at any of the vehicle emissions inspection stations in Maricopa County. In Pima County, heavy-duty diesel vehicles (26,000 lbs GVW or greater, or any truck with tandem drive axles) must be tested at 6661 S. Renaissance Dr. , Tucson, AZ 85746.

 

[Rebel Ram]

They have been doing this quite awhile on the over the road rigs for the last 4 to 5 years , this started i think in calif .

Ummm. Not. We have ZERO Diesel emission tests here. :-laf Go figure.

 

[Steve Graham]

If you have 40-49% opacity with near stock settings, something is MAJORLY off. 40% is blocking out the sun, or the headlights behind you. I'd get the injectors tested- chances are they arent up to snuff. Even with double stock fuelling, and smoky aftermarket injectors, I dont smoke more than 20-22% (my guess based on the 30% my old smoky 91. 5 put out), and that is too much for my liking.



Daniel

40% opacity is not much smoke! Not even close to blocking the sun. At least not here in AZ.

 

[Steve Graham]

Here is the current Arizona emissions availalbe on their web site. It may be outdated:

cut... .

In Maricopa County the maximum allowable is 20 percent opacity. (8,500 lbs GVW and less)

cut... .

Heavy-duty (8,501 lbs and greater) diesel vehicles in Maricopa County ,The maximum allowable for engine model year 1991 and newer is 40 percent opacity, for engine model year 1990 and older the maximum is 55 percent opacity.

cut... .

Thats intresting, I did not know they have 2 standards. My Scout gets the 20% and my Dodge gets the 40%.

I'm ready to transplant my wife's 65 W200 Power Wagon body on my 92 frame.

 

[OKish]

just adjust the linkage for a max of like 50% throttle. i think that'll work.

 

[LDechaine]

Hey... I just took the emissions test TODAY in Stacks. I got 12 % with the mods in my signature, out of the allowable 40%. They allow you to run the test if you like, so just be "easy" when you jam the pedal down and likewise when you let up. I've never had a problem in three years.

 

[MMeier]

Sounds like its time to move or get your vehicles tagged outside the emissions testing area...



Brian

Ding, ding, ding, we have a winner !!!!

 

[JLEONARD]

40% is a lot of smoke really. I think mine registered 1% when it was snap tested.

PLus the tester guy told that in 2 years he had only one diesel fail... and that thing was pouring so much smoke at idle that everyone had to evacuate the garage until the test was over.

I relly don't think you need to worry too much about it. Turn the fuel cone to the lean position , test, then move it back. That's easy.

 

[Steve Graham]

Well I guess it's only going to be my Scout that going to be a problem at the emission testing.

Thanks for all the replys,

Steve

 

[DieselBuzz]

Visible smoke is considered a safety issue in Mass. and can fail your vehicle regardless of emission standards.

 

[AMink]

I had to do the snap test with my 97 in Reno. With a 100 plate, it only registered 2% or so. I think it's in how hard they "snap" the throttle. The guy that did mine kind of rolled on it. It was on a dyno, so there was at least a little load.

 

[goldminer]

I tested my truck a week ago. It was a 43 and fail. The POD that I put in 3months earlier did smoke a little with the thin washer. I was told to use the thin washers to get the best results. The injection pump is set as stock which was done by Southwest Diesal at the same time. They do great work. I did have a problem with Diesal Care, but got my money back except time and shipping costs. On Friday I put the injectors in that were done along with the pump and pasted with 10. 2 . The part number on the nozzles is RDB 0433-175-033. Does anyone know if these are an upgrade or stock. I asked for something more than stock, but knowledge is power. I didn't know what #@$%! nozzles to ask for. Can I do anything to the POD to make them smoke less or was that $375. 00 down the drain? #@$%!



Thanks



Roy