76 sedan wont pass smog

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76 sedan wont pass smog

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Cadillac >> General Technical Section >> US Emissions >> 76 sedan wont pass smog

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76 sedan wont pass smog - 6/21/2007 1:43:25 AM

newguyoldcar

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Joined: 6/21/2007
Status: offline

i guess the law was changed right?
my 76 sedan deville obviously did not pass smog the guy whom tested it (long time friend of mine) said that it is running to rich and that i should get the carbuertor rebuilt in order to have it pass. I live in los angeles area. Any advice on where i should go, or if there might be somthing else i can do? or any comments you have that might help me out.

Post #: 1

RE: 76 sedan wont pass smog - 6/21/2007 5:11:52 PM

brougham1

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Joined: 7/5/2006
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Hey New: Just a thought, see if there is a retro fuel injection system that would fit your engine. A throttle body type or otherwise. This would still give you the power but easier on the pocket and you just might pass the test. gooood luck.........

(in reply to newguyoldcar)

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RE: 76 sedan wont pass smog - 6/22/2007 6:24:20 PM

newguyoldcar

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Joined: 6/21/2007
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okay,i'll check it out. my dad said there maybe some air-fuel mixture dial that i can adjust, and i was thinkin couldnt i just clean out the jets? thats crazy i never heard of being able to put fuel inject parts on to a already carbed.

(in reply to brougham1)

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RE: 76 sedan wont pass smog - 2/24/2008 5:04:34 PM

carnut

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Joined: 2/23/2008
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This carb used a plastic type material for the float within the carb. Over the years the plastic would soak up gas, becoming heavier thus causing a high fuel level in the carb. Hence, running too rich. Short of replacing the carb, try 1 gallon of denatured alcohol with 5 to 8 gallons of gas in the tank when re tested. the alcohol produces oxygen as its being burned which should lean out the mixture. Its worked on the last 2 cars I've owned, and I live in Calif. as well.

_____________________________

2 1984 Eldos, 1991 Allante, 88 Allante (sold)

(in reply to newguyoldcar)

Post #: 4