Failed emissions w/the "B": Hydrocarbons

BYRDPE · May 23, 2008

I passed the carbon monoxide portion but failed for hydrocarbons.
Standard is 220ppm...I tested at 988ppm w/o cats.
However, I still have my stock H pipe which I am going to install and test again.
Last year I tested with the same O/R H and the results were:
Standard 220 and I tested 73.98ppm.
The prior year I tested with the stock H and the results were:
Standard 220 and I tested 32ppm.
Anyone think the stock H will get me there?
Any other ideas to help pass?

Thanks

BTW...I already know the "B" is not emissions legal.

LiquidGT · May 23, 2008

I passed my final test with the set up in my profle (like yours with no s/c) with a Magnaflow catted H, no thermactor system, and a bad TFI that gave me a crappy idle with no access to 3k+ rpm; but they only did an idle test.

I would try to get it to pass with the stock pipe first, make sure you drive the car to operating temps. You could try new O2's, oil change/tune up crap, clean the egr... if you still run it. They also have some stuff called Guaranteed to pass at the parts store. I never used it, but the company will reimburse you for the bottle if the car fails.

Deleted member 87397 · May 25, 2008

back your timing down a bit, lower your fuel pressure, add some acetone to your gas 1 oz per 4 gallons. It will cut your hydrocarbons down. The stock H should work well too. As mentioned above though make sure you drive the car for a good while to get the cats nice and hot.

93 LX · May 25, 2008

fastfox86 said:
acetone to your gas 1 oz per 4 gallons.

Acetone?? what does this do??

SMOKEDYA · May 25, 2008

it makes it burn cleaner. when did tenneessee start DEQ? what part of tenneessee are you in? i moved from there in 96 and lived in shelby county (bartlett) and we didnt have it then. peace

john

93 LX · May 25, 2008

SMOKEDYA said:
it makes it burn cleaner

Who else has tried this?

LiquidGT · May 25, 2008

I heard that the acetone is supposed to increase you gas mileage, but they tested it on Mythbusters and proved it to be wrong, I think it was a little worse. I never heard about using acetone for emissions, but if it makes your mileage worse then I would assume it wouldnt help emissions.

I tried running acetone in my escort just because I could, and I didnt see any difference in gas mileage.

SMOKEDYA · May 25, 2008

i've never tried it i just heard it burns cleaner? i think it's all B.S. also tho? who knows peace

john

Mustang5L5 · May 25, 2008

I'm surprised ou passed at all with an off-road H-pipe

Deleted member 87397 · May 25, 2008

I've run it before. No noticeable gain in mileage, but I did notice all the black sooty stuff that usually accumulates on my bumper all but vanished. It should help with the hydrocarbons enough bring your level down.

loveblueoval · May 25, 2008

Go try a bottle or two of rubbing alcohol it lowered my hydrocarbons about 50 to 60 points!!!! I swear.

BYRDPE · May 25, 2008

loveblueoval said:
Go try a bottle or two of rubbing alcohol it lowered my hydrocarbons about 50 to 60 points!!!! I swear.

lol...I know a guy that did the same thing and he said it helped him pass.
quote]I tried running acetone in my escort just because I could, and I didnt see any difference in gas mileage. [/quote]
LiquidGT, where can I find acetone?

it makes it burn cleaner. when did tenneessee start DEQ? what part of tenneessee are you in? i moved from there in 96 and lived in shelby county (bartlett) and we didnt have it then. peace

I'm in Memphis, Shelby County.

back your timing down a bit, lower your fuel pressure, add some acetone to your gas 1 oz per 4 gallons. It will cut your hydrocarbons down. The stock H should work well too. As mentioned above though make sure you drive the car for a good while to get the cats nice and hot.

fastfox86, I really don't want to mess with the tune if I don't have to. I guess I can record the fuel pressure and put it back and do the same with the timing.
I'm hoping I can find the acetone and use that along with the stoch H.
Anyone know where to find this stuff?

Thanks for the suggestions guys. Now I have a few things to work with.

LiquidGT · May 25, 2008

You can get acetone from anywhere that has a paint section, auto parts stores, wal mart...

It's actually just paint thinner.

93 LX · May 26, 2008

loveblueoval said:
Go try a bottle or two of rubbing alcohol it lowered my hydrocarbons about 50 to 60 points!!!! I swear.

I do this all the time. get 90% or higher since the lower stuff has a ton more water in the mix.

Deleted member 87397 · May 26, 2008

Wal-Mart in the paint section.

stick0014 · May 26, 2008

might help

i have a similiar set up, using edelbrok heads and vortech blower, i also failed on my hc. by alot, you will need the cats and a good O2 sensors, and i actually asdvanced my timing, ran ultra 94 with octane boost, then drove the piss out of the car to get it good and hot. and i passed by 1 point...lol

BYRDPE · May 26, 2008

stick0014 said:
i have a similiar set up, using edelbrok heads and vortech blower, i also failed on my hc. by alot, you will need the cats and a good O2 sensors, and i actually asdvanced my timing, ran ultra 94 with octane boost, then drove the piss out of the car to get it good and hot. and i passed by 1 point...lol

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Fast63 · May 26, 2008

you will probably pass with the stock H-pipe, but you might pass even more with a new H-pipe with converters.

Failed emissions w/the "B": Hydrocarbons

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That is…until I whipped out my Bissell

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