Failed SMOG again in CA...High NOX count....

[zooopreme]

^That

Originally Posted by andisan

My issue was all dirty emission components, so before you start buying new parts, take all your emission parts and clean them real good, take them apart and clean them, I learned the hard way

This

Originally Posted by yetijeff

Pop the Allen caps on top of ur intake mani runners. They're clean outs for ur egr ports. 90% of these cars have never been cleaned and are packed solid with carbon not allowing egr gasses to pass through.

And this


These posts should be the first things you should try before taking your car back for a smog check. Chances are these parts are backed up and dirty as hell.

Then proceed with the cheaper things on the list and work your way to the more expensive parts if you're still not passing. If you wanted to pass smog with flying colors, you're going to have to do a lot more.

But if that's something you don't want to do, since smog is such a headache when the car runs fine and is relatively stock, get the car to where it barely passes and then proceed to replace/fix.

[worangejuice]

Originally Posted by zooopreme

^That



This

Originally Posted by andisan
My issue was all dirty emission components, so before you start buying new parts, take all your emission parts and clean them real good, take them apart and clean them, I learned the hard way

And this

Originally Posted by yetijeff
Pop the Allen caps on top of ur intake mani runners. They're clean outs for ur egr ports. 90% of these cars have never been cleaned and are packed solid with carbon not allowing egr gasses to pass through.


These posts should be the first things you should try before taking your car back for a smog check. Chances are these parts are backed up and dirty as hell.

Then proceed with the cheaper things on the list and work your way to the more expensive parts if you're still not passing. If you wanted to pass smog with flying colors, you're going to have to do a lot more.

But if that's something you don't want to do, since smog is such a headache when the car runs fine and is relatively stock, get the car to where it barely passes and then proceed to replace/fix.

prob try this next, just need to sell the damn thing, its been months of registtering, and smog is the last headache, i have buyer ready.......
1.replaced plugs
2.cleaned out egr intake,behind allen bolt above throttle body
3.used that 'guarantee to pass' stuff (1/2 tank now)
4.seafoamed it

took to a korean shop and guy spoke no english
i fixed alot of stuff and took to a english speaking shop.
said visual inspection fail. one hose was off and EGR doesnt have all hoses hooked up. so I have to hook hoses up. guy i got car from said EGR hooked up fucked car up, so imgonna hook it up properly and go back, Car runs amazinly strong!!! but CA emmisions are the devil..........dreading buying a cat, prob go the illegal route at that point......fucking CA

Oh and im in koreatown

[mechanicalmoron]

Originally Posted by worangejuice

prob try this next, just need to sell the damn thing, its been months of registtering, and smog is the last headache, i have buyer ready.......
1.replaced plugs
2.cleaned out egr intake,behind allen bolt above throttle body
3.used that 'guarantee to pass' stuff (1/2 tank now)
4.seafoamed it

took to a korean shop and guy spoke no english
i fixed alot of stuff and took to a english speaking shop.
said visual inspection fail. one hose was off and EGR doesnt have all hoses hooked up. so I have to hook hoses up. guy i got car from said EGR hooked up fucked car up, so imgonna hook it up properly and go back, Car runs amazinly strong!!! but CA emmisions are the devil..........dreading buying a cat, prob go the illegal route at that point......fucking CA

Oh and im in koreatown

.....what do you mean, the illegal route... the only route to pass is legal, as far as the cat goes.

OF COURSE not having the egr hooked up, which the guy TOLD YOU ABOUT, would make you fail.... hurrdurr.

Drive it hard for a while, and run it at a high idle as you wait your turn. Like, 2k+.

[zerodameaon]

Originally Posted by mechanicalmoron

Drive it hard for a while, and run it at a high idle as you wait your turn. Like, 2k+.

What so he can waste gas? Sitting in line revving your engine does not help and only calls attention to yourself.

Also unless your best friend will hook you up buying a cat is cheaper and well, not illegal.

[mechanicalmoron]

Originally Posted by zerodameaon

What so he can waste gas? Sitting in line revving your engine does not help and only calls attention to yourself.

Also unless your best friend will hook you up buying a cat is cheaper and well, not illegal.

No, just let it chill at a fast idle, if it's possible and not obvious.. Don't be all fast and the furious.

Nothing to do with wasting gas. If you don't understand why a hot motor is considerably more likely to have good numbers, there's no helping you.... but I'll try.

When your motor is cold (idle is quite cold, even if it's "warmed up") the combustion is not as complete - this is why we have all these systems that kick in at idle to help with emissions. Oil burns and makes gummy stuff that will burn when you do have to get rpms up for the tests - this is why a car that burns oil will sit and idle and not smoke, but when you touch the throttle it makes clouds - hopefully his car's not that bad obviously, but even a perfect engine MUST burn oil, by design, because it's what lubricates the rings. But the gas as well, and everything sitting around moving slowly in the egr passages and such - if the cat's not so good, you don't want it getting cold, that's why we have a pair valve - to keep it "cooking". You want to go in there with a blisteringly hot engine that's had all the crud burnt out of it right up until the last moment, and a cat that's super hot so it's actually converting like it should be.

Basically your motor slowly fills with coal when it runs cold. Coal is dirty. Dirty fails tests. When it's hot it can keep up with it's own waste production, as well as simply producing less of it. This is also what seafoam helps dissolve, so it can be burnt the rest of the way and blasted out.


Now, I'm half expecting something about how that's what valve seals and piston rings take care of, and they should be replaced.... But if you're not volunteering to pay for his oem rebuild, that's irrelevant. This is an old motor that's probably out of tolerances in many ways. We wouldn't be discussing this at all if it was a perfect situation with a car that had no trouble with this test.