Re: Carb 308 smog test
From: Robert W. Garven Jr. (rgarvengmail.com)
Date: Tue, 12 May 2009 21:15:54 -0700 (PDT)
my car always passed too even with the tubi but having the guy with one tooth grind through the gears made me feel like a rape victim. It was also funny when they wanted to check the timing and test the fuel cap.... Allot of people picked on our last gov, but Im not sure things are any better under arnold and he rescinded the rolling exemption, your car would have been smog free years ago.... Hooking up the pumps made the engine run at least 100 degrees hotter and the thing felt like it was going to melt hence the name of the pre
cat muffler the barbeque! The gt4 has 2 pumps!!!



Rob


Robert W. Garven Jr.
rgarven [at] gmail.com


"The Ferrari is a dream - people dream of owning this special vehicle and for most people it will remain a dream apart from for those lucky few". Enzo Ferrari






On May 12, 2009, at 2:36 PM, robert_h_bowser [at] juno.com wrote:

Got my annual Kalifornia smog test notice for the old '78 308GTS, and duly took it down to the local Test Only station. It passed, although just barely.

It is funny, there is a perception that these old carb cars are impossible to keep in tune and very difficult to smog successfully. I never touch the carbs, and the car has NEVER failed smog in the (almost) 12 years that I have owned it. Six biennial smog tests. Six passes. All I really do is drive it regularly. Perhaps that has something to do with it.

In contrast, my brother has a '78 Porsche 911SC. Same year, different manufacturer. Although it is a product of German engineering, and fuel injected, it fails smog regularly. He has to take it to his mechanic to get the mixture adjusted so it runs like s**t, get it smogged, then return it to put the mixture back to a drivable setting.

I think perhaps the reason my car barely passed this time is because I went back to the standard 55 idle jets. I had been using 60s. With the 60s, it seemed to run a bit better right off idle, but worse at higher throttle settings, especially when hot. The smog test has the car running at 15mph and 25mph on a dyno, which is right in the flat spot of the 55 jets. I think next time I'll put the 60s back in for the test.

Bob
'78 308GTS
'01 Corvette Z06

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