Hey man I failed smog here in CA twice and long story short I did tune up but still failed NOx big time and the only thing that did it was decarbonization treatment at a certified smog repair place... went from 1100 to 230 ppm, and the acceptable limit is like 550... I have a 95 zj with 4.0 and 231, here they make me do the various speed test for 2wheel drive, next time all ask about the 4x4 maybe that have that here too. Good video man and great build !
WOAH...I DID NOT KNOW ABOUT THAT DE CARBINIZED WORK...CALIF HAS NEW TESTING WITH SAME AS GETTING ON THE FREEWAY...WELL YEAH...IT GONNA MAKE MORE NOX...CRAP...THEY WANT ME TO PUT A NEW CAT ON EVERY 2 YEARS...NO WAY...MY CAT WAS REPLACED 2 YEARS BEFORE THAT...@$240.00 SICK CRAP...I BARELY IS OVER NOX BY 20 POINTS...NUTS...
Common with this engine, is the inherent issue with the plate under the intake manifold, that develops a SLOW air leak between the oil galley and intake manifold. If you catch it early, you may save a ton of work and cost down the line. There are fixes out there already.
Lucky for you that you can do an idle test. Roll into a Colorado testing station with an all wheel drive ZJ, they put you on the all-wheel drive dyno which is really scary when you're watching your vehicle wobble back and forth on the dyno with nothing but a janky looking ratchet strap to keep it from flying off.
Ya know, the province of British Columbia used to have the air care test until most of the oil burners were finally off the road in the lower BC mainland. Often 8 cylinder cars and light trucks would often fail. No matter how much tuning was done, some vehicles were hard to pass. Even some new cars at these stations would fail. Do you know what the best solution was? Wait for a hot day and try a few different testing stations! It was the equipment at the testing station that was defective in slot of cases. I hollowed out my Cat on my 98GC and did a work around for my lower O2 sensor. I drive past some sights that were used for testing. As I drive by, I wave at those sights with one finger. Lol Plate C
I'm glad I live in Gila county and don't have to mess with that again. I lived in Phoenix in the late 80's and had to deal with it. I had a car that failed twice (was really close though) at different testing stations, for the third time I went to a new testing station and made sure to run the fuel level down to a few gallons of gas (very low) and added around 10 bottles of HEET Gas-Line Antifreeze and Water remover which is pretty much pure alcohol which burns EXTREMELY clean. The guy ran the test and although it was a 1972 Duster with a 318 he said it had numbers better than a lot of new cars. NOT that I would condone such behavior but I was young, poor and needed a car! I would hate to think how my ride now would fare through a emissions test. It a 1993 K2500 Suburban with a 454 engine...Runs gresat so it may do ok.
Idk if this is a legit tip but I had high nox for my 95 zj. I put about half a tank of race fuel 100 octane in with the half tank of 87 and got it to pass. I guess the average octane would've been around 94 if that is how octane levels work. I think I have carbon build up inside the piston cylinders causing higher compression, the engine has 200k miles.
LACQUER THINNER...1 GALLON IN TANK AND DRIVE THE HIWAY TO DRAIN THAT TANK...SEE SCOTTY KILMER VIDEOS...IT WORKS...SEA FOAM TOO...I ALSO TREATED MY ENGINE WITH PROLONG...LESS FRICTION AND NEW E-3 PLUGS...DANG IT RUNS GREAT...UMMMM...247 700 MILES ON IT...
Have you done the cap and rotor? Are you still running stock fuel injectors? When I had my 95 I had swapped in 4 hole injectors from a neon and was able to pass with flying colors. But I would always do cap, rotor, plugs, fuel filter, air filter and check for vacuum leaks before the test.
Hello, is it OK to feature your clip in a my chanel for educational purposes (so-called temporary copyright.)? You can stop me from using your content at any time and it will be deleted immediately. It will be credited in the description & comments section with your name. Thanks, MM
Hey man, not sure why but they tested for HC CO and NOx on my 1995 mustang GT 5.0l v8 engine. They ran it into the ground for some reason. Is this a testing center issue or were they supposed to rev it that hard? You said your test was less brutal? I'm sorry if I'm not making much sense, I've just been told I need new cats as my car failed slightly over the NOx and CO limit
Hey dude i went today and the same thing happened to me. What test do i tell them i need just a test for a 4wd vehicle? Does it say what type of test it is on your paperwork i couldnt tell
High NOX numbers mean only one thing - well two things; but, we know he didn't deck the heads; so, it can only mean one thing - EGR Valve isn't working properly and because it's so close to passing, it means it's working, just not working well. That screams Vacuum Leak in the EGR Valve or EGR Solenoid. Absolutely NOT a new CAT.
When I took my ZJ to emissions one of the workers instructed me to pop the hood. So I did. Then another worker hopped in the driver seat to attempt to do just that. It was loud in the building so he could not hear me and proceeded to break the plastic handle for the hood release off. -_- Needless to say I was not happy. I spoke with the manager there and they said they would reimburse me the cost to fix it, but honestly I just wanted to leave, and not come back until I had to.
Dear, you have made many changes to the Jeep, but it is also very necessary to make deep cleaning of the vehicle, especially the chassis, so that the rubbers and labels are not abused, is part of the maintenance.
I failed once on my 94 emissions were way to high I just ordered a cat from amazon put it underneath and sure as sH*** I pass just like a brand new car 🤣
BLTRAN - How do you pass emissions after an engine swap? I have a TJ and considered doing a Hemi swap but have held back due to my understanding of AZ emission regulations. What would I have to do to pass once the swap is complete assuming all OBD functions work properly?
Don't be so hard on yourself. You're neither dumb, nor an idiot. It's an old vehicle. YOU LIVE IN ARIZONA. It's HOT in Arizona. What does heat destroy? Rubber and plastic. You "barely" passed meaning you have an issue going on. Clean your EGR Valve or have Pops clean it. Most importantly, replace the vacuum line that goes to the EGR Valve. It's probably deteriorating from age and heat. Also replace the vacuum line to the EGR Solenoid. Keep your records and compare your emissions next time when your EGR Valve and EGR Solenoid are in tip-top shape. You'll be feeling better and can run that 2WD test and not be bothered for another 2 years. Good luck!
Another thing - Drive it for an hour on your way to testing. Don't just drive the 5 or 10 minutes from home. DRIVE IT. My Suburban was giving me issues and I finally got the CHECK ENGINE light to go out half way to Vegas. Coming home from Vegas, I drove it straight to SMOG. Check that thing HOT! Sucks that your rotation is in the summer when you're not driving it. I would recommend smogging it on the way home from a camping trip; but, that's freakin Arizona. Who wants to camp in the summer? Go to Vegas or Laughlin like I do.
Scotty: While you "learned to play the game" so to speak, you unfortunately did not address the poor running condition of your Jeep. With those readings your Jeep is eating too much fuel and something is wrong. With the way you travel all alone in very remote areas, I think I would work a little harder at fixing the issue as AAA doesn't make those kinds of "house calls". I do NOT believe the engine is getting old and therefore there is nothing you can do. Mine has 189k on it and runs great. While I don't have to deal with emissions inspections, I firmly believe it would pass a smog test. No offense intended.
No offense taken, Mark! I appreciate (and share) your concern for traveling alone with a dependable rig. I believe that the final emissions check was done incorrectly. I didn't have a chance to talk about it in the video -- since I didn't want to start another rant about the testing procedures. The steady-state test is supposed to involve idling the Jeep for around a minute, and get an average measurement of emissions. Then, they are supposed to hold a sustained idle at around 2K RPMs for another minute and get the average of those readings. On my second re-test, the guy hooked it up to the machine, jumped in, gunned it to around 2K for less than 3 seconds, and pulled the equipment off. I didn't question him since I passed, but I think that led to higher numbers than it should have been. I do also agree some smaller issue could still be going on. After the spark plugs, oil change, and air filter clean, the Jeep was tested at an off-site facility and was performing far better than my initial test. Either way, I think I'll still have a look at the CAT, IAC, O2 sensors, and someone recommended a de-carb. Other than that, it still runs great on long trips!
Hey man I failed smog here in CA twice and long story short I did tune up but still failed NOx big time and the only thing that did it was decarbonization treatment at a certified smog repair place... went from 1100 to 230 ppm, and the acceptable limit is like 550... I have a 95 zj with 4.0 and 231, here they make me do the various speed test for 2wheel drive, next time all ask about the 4x4 maybe that have that here too. Good video man and great build !
I was thinking the same thing. I saw this done in the speed channel and they passed in the UK.
WOAH...I DID NOT KNOW ABOUT THAT DE CARBINIZED WORK...CALIF HAS NEW TESTING WITH SAME AS GETTING ON THE FREEWAY...WELL YEAH...IT GONNA MAKE MORE NOX...CRAP...THEY WANT ME TO PUT A NEW CAT ON EVERY 2 YEARS...NO WAY...MY CAT WAS REPLACED 2 YEARS BEFORE THAT...@$240.00 SICK CRAP...I BARELY IS OVER NOX BY 20 POINTS...NUTS...
Common with this engine, is the inherent issue with the plate under the intake manifold, that develops a SLOW air leak between the oil galley and intake manifold. If you catch it early, you may save a ton of work and cost down the line. There are fixes out there already.
Lucky for you that you can do an idle test. Roll into a Colorado testing station with an all wheel drive ZJ, they put you on the all-wheel drive dyno which is really scary when you're watching your vehicle wobble back and forth on the dyno with nothing but a janky looking ratchet strap to keep it from flying off.
Ya know, the province of British Columbia used to have the air care test until most of the oil burners were finally off the road in the lower BC mainland. Often 8 cylinder cars and light trucks would often fail. No matter how much tuning was done, some vehicles were hard to pass. Even some new cars at these stations would fail. Do you know what the best solution was? Wait for a hot day and try a few different testing stations! It was the equipment at the testing station that was defective in slot of cases. I hollowed out my Cat on my 98GC and did a work around for my lower O2 sensor.
I drive past some sights that were used for testing. As I drive by, I wave at those sights with one finger. Lol
Plate C
What happens if you refuse to do the test?
I'm glad I live in Gila county and don't have to mess with that again. I lived in Phoenix in the late 80's and had to deal with it.
I had a car that failed twice (was really close though) at different testing stations, for the third time I went to a new testing station and made sure to run the fuel level down to a few gallons of gas (very low) and added around 10 bottles of HEET Gas-Line Antifreeze and Water remover which is pretty much pure alcohol which burns EXTREMELY clean.
The guy ran the test and although it was a 1972 Duster with a 318 he said it had numbers better than a lot of new cars.
NOT that I would condone such behavior but I was young, poor and needed a car!
I would hate to think how my ride now would fare through a emissions test. It a 1993 K2500 Suburban with a 454 engine...Runs gresat so it may do ok.
That happened to me last year, had to change out some parts! Now it's all good here in CA.
what did you fix?
Did not know there was an easy 4x4 emission test. I put a new cat on my 94 yj and it passed the dyno test easily
Damn, even here in commi Illinoisikstan you do not need emissions test on anything 96 and older.
KEWLNESS!!!
Idk if this is a legit tip but I had high nox for my 95 zj. I put about half a tank of race fuel 100 octane in with the half tank of 87 and got it to pass. I guess the average octane would've been around 94 if that is how octane levels work. I think I have carbon build up inside the piston cylinders causing higher compression, the engine has 200k miles.
LACQUER THINNER...1 GALLON IN TANK AND DRIVE THE HIWAY TO DRAIN THAT TANK...SEE SCOTTY KILMER VIDEOS...IT WORKS...SEA FOAM TOO...I ALSO TREATED MY ENGINE WITH PROLONG...LESS FRICTION AND NEW E-3 PLUGS...DANG IT RUNS GREAT...UMMMM...247 700 MILES ON IT...
Next year you can get classic plates and no more tests
classic plates don't mean no emissions sadly... not in AZ. But you can get classic/collectors insurance and void emissions all together.
Have you done the cap and rotor? Are you still running stock fuel injectors? When I had my 95 I had swapped in 4 hole injectors from a neon and was able to pass with flying colors. But I would always do cap, rotor, plugs, fuel filter, air filter and check for vacuum leaks before the test.
I have a 97. Trying to get passed in California right now.
im in havasu we dont have emission testing.
I think running a can of seafoam through it before getting it tested could help
How old was your car and how many Miles were on it when it failed?
Hello, is it OK to feature your clip in a my chanel for educational purposes (so-called temporary copyright.)? You can stop me from using your content at any time and it will be deleted immediately.
It will be credited in the description & comments section with your name. Thanks, MM
Hey man, not sure why but they tested for HC CO and NOx on my 1995 mustang GT 5.0l v8 engine. They ran it into the ground for some reason. Is this a testing center issue or were they supposed to rev it that hard? You said your test was less brutal? I'm sorry if I'm not making much sense, I've just been told I need new cats as my car failed slightly over the NOx and CO limit
Hey dude i went today and the same thing happened to me. What test do i tell them i need just a test for a 4wd vehicle? Does it say what type of test it is on your paperwork i couldnt tell
You can choose for one of the above gifts
Mine just failed a dyno in AZ. I wonder if they will give me a guff about wanting an idle test next time. Regardless I gotta do some maintenance
What happens if you refuse to do the test?
So glad I live in a state that doesn't test. Could it be time for a new CAT?
High NOX numbers mean only one thing - well two things; but, we know he didn't deck the heads; so, it can only mean one thing - EGR Valve isn't working properly and because it's so close to passing, it means it's working, just not working well. That screams Vacuum Leak in the EGR Valve or EGR Solenoid. Absolutely NOT a new CAT.
When I took my ZJ to emissions one of the workers instructed me to pop the hood. So I did. Then another worker hopped in the driver seat to attempt to do just that. It was loud in the building so he could not hear me and proceeded to break the plastic handle for the hood release off. -_- Needless to say I was not happy. I spoke with the manager there and they said they would reimburse me the cost to fix it, but honestly I just wanted to leave, and not come back until I had to.
Dear, you have made many changes to the Jeep, but it is also very necessary to make deep cleaning of the vehicle, especially the chassis, so that the rubbers and labels are not abused, is part of the maintenance.
Iowa people say, emissions test what?
I failed once on my 94 emissions were way to high I just ordered a cat from amazon put it underneath and sure as sH*** I pass just like a brand new car 🤣
I replaced the cat/exhaust a few years back when I first got the Jeep. I may have to check it out again before my next emissions run!
Jersey 95 or under DONT need it 🙏🏼
Just Rice California yup you need 😔
that's what i like about virginia my zj dosent need emissions because it's 25 years old
Anyone is AZ do an engine swap and still pass emissions?
easier solution get a mail box (address) in Bullhead......
I can help you for free I’m in az in Glendale and I’m dedicated to passing cars emissions let me know
Thanks for the offer! We fixed the issue a couple months back.
BLTRAN - How do you pass emissions after an engine swap?
I have a TJ and considered doing a Hemi swap but have held back due to my understanding of AZ emission regulations. What would I have to do to pass once the swap is complete assuming all OBD functions work properly?
Laws are broken. Worse than me.
You need to move where they don’t do this crap
Don't be so hard on yourself. You're neither dumb, nor an idiot. It's an old vehicle. YOU LIVE IN ARIZONA. It's HOT in Arizona. What does heat destroy? Rubber and plastic. You "barely" passed meaning you have an issue going on. Clean your EGR Valve or have Pops clean it. Most importantly, replace the vacuum line that goes to the EGR Valve. It's probably deteriorating from age and heat. Also replace the vacuum line to the EGR Solenoid. Keep your records and compare your emissions next time when your EGR Valve and EGR Solenoid are in tip-top shape. You'll be feeling better and can run that 2WD test and not be bothered for another 2 years. Good luck!
Another thing - Drive it for an hour on your way to testing. Don't just drive the 5 or 10 minutes from home. DRIVE IT. My Suburban was giving me issues and I finally got the CHECK ENGINE light to go out half way to Vegas. Coming home from Vegas, I drove it straight to SMOG. Check that thing HOT! Sucks that your rotation is in the summer when you're not driving it. I would recommend smogging it on the way home from a camping trip; but, that's freakin Arizona. Who wants to camp in the summer? Go to Vegas or Laughlin like I do.
Scotty: While you "learned to play the game" so to speak, you unfortunately did not address the poor running condition of your Jeep. With those readings your Jeep is eating too much fuel and something is wrong. With the way you travel all alone in very remote areas, I think I would work a little harder at fixing the issue as AAA doesn't make those kinds of "house calls". I do NOT believe the engine is getting old and therefore there is nothing you can do. Mine has 189k on it and runs great. While I don't have to deal with emissions inspections, I firmly believe it would pass a smog test. No offense intended.
No offense taken, Mark! I appreciate (and share) your concern for traveling alone with a dependable rig. I believe that the final emissions check was done incorrectly. I didn't have a chance to talk about it in the video -- since I didn't want to start another rant about the testing procedures. The steady-state test is supposed to involve idling the Jeep for around a minute, and get an average measurement of emissions. Then, they are supposed to hold a sustained idle at around 2K RPMs for another minute and get the average of those readings. On my second re-test, the guy hooked it up to the machine, jumped in, gunned it to around 2K for less than 3 seconds, and pulled the equipment off. I didn't question him since I passed, but I think that led to higher numbers than it should have been. I do also agree some smaller issue could still be going on. After the spark plugs, oil change, and air filter clean, the Jeep was tested at an off-site facility and was performing far better than my initial test. Either way, I think I'll still have a look at the CAT, IAC, O2 sensors, and someone recommended a de-carb. Other than that, it still runs great on long trips!