Passed Smog Test (1 Viewer)

Spike Strip

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Timing @ 5* BTDC (Kalif only allows +/- 2* or test fail). I watched the Tech check the timing (after I showed him where the marks were ;) )

about 40% E-85 Flex Fuel mixed with 91 Octane (or higher if available) Normal AQMD Summer Blend (oxygenated) gas.

Fresh Engine Oil

Carb tuned to slightly lean with A/F meter (bouncing between 15(ish):1 to 16:1 at idle).

smog4-21.jpg
 
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OSS

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Wow - just wow- those numbers are excellent.
Just goes to show (everyone else) that if an owner takes care of his engine and knows how the smog equipment (and test) works, the 2F can pass a smog test easy peasy
 

Spike Strip

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My % O2 has never been that high so I can only attribute it to the E-85 and Summer blend gas (I normally smog in Dec/Jan but had to delay this year cuz, WuFlu) which is lower vapor pressure, and Oxygenated, I believe.

Ah - I just looked it up: E-85 is "Highly Oxygenated" ...
 

Spike Strip

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What are you doing to tune lean?

Just mix screw and watch the AF meter.

It ran a little hot with the mix lean, and It pinged on 87, so I used 91 octane and backed off the timing the 2 degrees to reduce temp and NOx and engine temp went back to normal and gave the above results. All other systems working properly.

I really think the Summer blend gas, which starts transitioning March 1st and I think goes through September, along with the E-85, made a huge difference. I'm going to wait until Summer blend is available from now on when doing the test. Just another thing the basturds won't tell you, or lie about.

I did not have to do it, but I had a back up plan to 'fool' the ABV and ACV to continually pump air from the smog pump into the exhaust pipe. It's pretty easy to figure out looking at the Air Injection section in the Emissions manual. No need to alter any of the Air Injection plumbing.
 

DFXR

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I did not know the mix screw would change that much at 1500 and 2500 rpms.

The A/F meter setup you have really does sound like the ticket. Beats just going in with your fingers crossed.

I have looked at the ABV option you’re talking about and yeah you’re right... no re-plumbing necessary.

Anyway, congrats. It’s such a crappy thing to have hanging over you, the two-year test.
 

OldBeachBob

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Having a real problem passing smog (Idaho - Ada County) carb recently rebuilt. 85 Fj60. Vehicle runs great, Low yearly miles.
2500 RPM Test
Standard Test
CO (%) 1.20 7.69
HCC (PPM) 220 220
Dilution CO+CO2%

Any ideas?
If can't pass anyone have experience with Howell EFI?

Thanks
 
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Having a real problem passing smog (Idaho - Ada County) carb recently rebuilt. 85 Fj60. Vehicle runs great, Low yearly miles.
2500 RPM Test
Standard Test
CO (%) 1.20 7.69
HCC (PPM) 220 220
Dilution CO+CO2%


@OldBeachBob - I think you need a better/working air pump or a lot of ethanol (E-85) in your fuel. You need some oxygen to burn up that CO at higher RPM
 

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