C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Emissions trick

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Old May 24, 2004 | 09:34 PM
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Default Emissions trick

Ok, I have to pass this on because it works so well. Before you get your emmissions test, run the gas tank until it is almost empty. Then immediatly before the test, pour a bottle of rubbing alcohol into the tank. (don't let Mr inspector see this)
I have done this 3 times, on the Vet as well as my Celica. each time they both put out ridiculously low emmissions-way below the normal.

:auto:
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Old May 24, 2004 | 09:39 PM
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Default Re: Emissions trick (ir0nmaiden420)

Will this hurt your car in any way?
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Old May 24, 2004 | 09:41 PM
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Default Re: Emissions trick (ir0nmaiden420)

I've heard this one. We're starting to nave emissions inspections this year in the Hickory area, Catawba county. I'll give it a try. Hope they don't give my car a breathalyzer test! :lol:
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Old May 24, 2004 | 09:44 PM
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Default Re: Emissions trick (ir0nmaiden420)

I did not experience any negative effects, I have been doing this the last few years on both cars. The only thing I got to thinking about, was since part of rubbing alchol is water, to some degree you are putting water into your tank. I don't think it is enough to make a difference. I use the 91% alchol as well which has less water than most alchol which is 80%
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Old May 24, 2004 | 10:19 PM
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Default Re: Emissions trick (ir0nmaiden420)

FORGET the rubbing alcohol. Just go to the ABC Store and get your car a 5th of Everclear its 95% pure grain alcohol, odorless, tasteless, and ... carefully for legitimate purposes only. Everclear, Grain Alcohol. just hold it between the lines on the way to get checked, she may tend to wobble a little with it in her tank...
HAHA...
:seeya :steering: :auto:
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Old May 24, 2004 | 10:49 PM
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Default Re: Emissions trick (4DJ2NJOY)

I been told that a couple of bottles of HEET will work just as well!!!
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Old May 24, 2004 | 10:51 PM
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Default Re: Emissions trick (ir0nmaiden420)

My MR Good wrench friend told me to do that to bring down NOx emissions in particular.
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Old May 24, 2004 | 11:06 PM
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Default Re: Emissions trick (ir0nmaiden420)

I believe the alcohol trick works in part because alcohol burns much hotter and cleaner than gasoline. This makes your cats work better and brings down your readings. I don't think it is a cure all, but it may help push you past the no-go limits.

:cheers:
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Old May 24, 2004 | 11:22 PM
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Default Re: Emissions trick (ir0nmaiden420)

I did not experience any negative effects, I have been doing this the last few years on both cars. The only thing I got to thinking about, was since part of rubbing alchol is water, to some degree you are putting water into your tank. I don't think it is enough to make a difference. I use the 91% alchol as well which has less water than most alchol which is 80%
be carefull of rubbing achol, it NOT good for rubber components. Use ethynol base up 15% much better. Another alturnative is gasline antifreeze.. i used as much as 1 gallon with good results
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Old May 25, 2004 | 12:41 AM
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Default Re: Emissions trick (ir0nmaiden420)

Just put a couple of bottles of STP gas treatment in the tank before you go. It worked out great when I lived in California.
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Old May 25, 2004 | 01:53 AM
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Default Re: Emissions trick (Mikez40)

yep it works you can by 96% methyl rubbing alcohol around here for like 1.19 a quart. about 6 quarts of that and 4 quarts of gas just before, cut emissions to a half or a 1/4th. i dont do that much in any vette, but the beaters around here we do, then go fill the tank up and drive it all out.


[Modified by mistaben, 12:54 AM 5/25/2004]
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Old May 25, 2004 | 01:59 AM
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Default Re: Emissions trick (Mikez40)

i think what else works? actually changing the oil and filter, especially if the piston rings are bad. i think adding a can of STP - ring sweller - "engine restore" about 300 miles or so before emissions test, then change oil to synthetic.

anyone else know any tricks that actually work?
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Old May 25, 2004 | 08:25 AM
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Default Re: Emissions trick (mistaben)

We use dry-gas up here in CT :thumbs:
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Old May 25, 2004 | 08:28 AM
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Default Re: Emissions trick (ir0nmaiden420)

Wonder if it would make my car pass emissions..... It would have to make the cats works really well.
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Old May 25, 2004 | 12:30 PM
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Default Re: Emissions trick (mistaben)

yep it works you can by 96% methyl rubbing alcohol around here for like 1.19 a quart.
I have thought about rubbing alcohol, but all that *I* have seen, is 50% water. That has scared me off. The 96% you speak of... Does it have a product or brand name? What type of store carries this? I have a test coming up soon.

RACE ON!!!
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Old May 25, 2004 | 02:42 PM
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Default Re: Emissions trick (chucks88)

I had some trouble with a car passing and rubbing Alcohol the kind the sell in drug stores, Wal Mart etc made it worse. I think you're supposed to use a different kind of alcohol, I know it wasn't rubbing alcohol. BTW NAPA sells 'Guaranteed to Pass' liquid which some have used successful.
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Old May 25, 2004 | 03:14 PM
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Default Re: Emissions trick (Mikez40)

I would think the steam produced for the water would clean your valves some also :yesnod:
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