What gas do I use to pass smog?
07-07-2010, 07:10 AM
#1
What gas do I use to pass smog?
So I have to pass smog again.
I'm thinking of ways that might help
I always fill up with shell, should I use Premium or just the regular stuff?
I know it runs a little quieter on the mid grade stuff but it just might be me.
What do you guys suggest?
Thanks
I'm thinking of ways that might help
I always fill up with shell, should I use Premium or just the regular stuff?
I know it runs a little quieter on the mid grade stuff but it just might be me.
What do you guys suggest?
Thanks
07-07-2010, 07:57 AM
#2
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Re: What gas do I use to pass smog?
Supreme, go take your car on the freeway for 15-20 to heat up your catilittic converter before you go to Smog,goodluck.
07-07-2010, 11:48 AM
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Re: What gas do I use to pass smog?
Higher octane means more resistance to ignition, and you want all of the fuel to burn as easily as possible for a smog test. In addition, most premium fuels have detergents and such to clean out the fuel system, and the last thing you want is any of that gunk being burned during a smog test.
That means regular low grade on a stock engine.
And consider a bottle of
or
07-07-2010, 12:16 PM
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Re: What gas do I use to pass smog?
Us smog tech's recommend what the manufacture suggests. So Regular it is.
Remember if you run cleaners, such as injector cleaner, run it completely out of the system.
Remember if you run cleaners, such as injector cleaner, run it completely out of the system.
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07-08-2010, 09:00 AM
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07-08-2010, 10:21 AM
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Re: What gas do I use to pass smog?
Its post like these that are making Honda-Tech a shitty place to get advice, that's just uncalled for. Especially since you didn't even give any reasons why your opinion might be right.
07-08-2010, 10:34 AM
#11
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Re: What gas do I use to pass smog?
not sure if it'll make much of a diff, but i'll throw it out there. i hear stories where you can try E-85 with slightly bigger injectors...440cc injectors are what i've heard to maintain performance and get better emissions. 
07-08-2010, 11:55 AM
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Re: What gas do I use to pass smog?
E85 needs more fuel for the same amount of air.
Though, I suppose an engine running rich could be leaned out with some E85 added to the tank, the challenge would be getting the mixture right to not run lean, which raises NOx pollution.
07-09-2010, 09:29 AM
#14
07-16-2010, 01:16 PM
#17
Re: What gas do I use to pass smog?
I failed =[
All numbers too high, everything else was good
The guy id I have an air leak
too much or too little fuel in the combustion chamber but too much raw gas out the muffler
That crc stuff works?
All numbers too high, everything else was good
The guy id I have an air leak
too much or too little fuel in the combustion chamber but too much raw gas out the muffler
That crc stuff works?
07-16-2010, 02:37 PM
#18
Honda-Tech Member
07-16-2010, 09:27 PM
#19
pm4nudes
07-17-2010, 08:29 PM
#20
Honda-Tech Member
Re: What gas do I use to pass smog?
You need to post the numbers for some help. Any additive you try adding to the tank is not going to work. There is something fundamentally wrong with your engine.
07-19-2010, 07:40 AM
#23
Re: What gas do I use to pass smog?
Buy regular, all gas in the U.S. is the same octane
I'll post my umbers later
My timing was 19 TDC
The tech told me I have an air leak and too much built up carbon in my engine
I have a sohc zc with dc sport header AEM CAI and tanabe medalion exhaust.
Car is a 91 crx
I set the timing on the cam gear back two degrees, so I assume now it's at 17 TDC
I checked my fuel pressure and it's at 42-43 psi
I had changed my oil and poured some engine restore in, had 400 miles on it so far
I know my IACV is going out so I cleaned it real good before the test
I'll post my umbers later
My timing was 19 TDC
The tech told me I have an air leak and too much built up carbon in my engine
I have a sohc zc with dc sport header AEM CAI and tanabe medalion exhaust.
Car is a 91 crx
I set the timing on the cam gear back two degrees, so I assume now it's at 17 TDC
I checked my fuel pressure and it's at 42-43 psi
I had changed my oil and poured some engine restore in, had 400 miles on it so far
I know my IACV is going out so I cleaned it real good before the test
07-19-2010, 10:35 PM
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Re: What gas do I use to pass smog?
Yeah I'm wondering the same thing, and how much fuel should I add it too? Cuz it says 20 gallons but I don't have a 20 gallon tank obviously and I know it's not intended for passing smog, so should I add it to like a half tank or 1/4 or what?
