C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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still running rich

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Old Apr 14, 2006 | 06:26 PM
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From: Boynton Beach Florida
Default still running rich

I have a edelbrock 600 cfm on my 81,I have the screws backed out about a turn and a half and I'm still running rich. the exaust pipes are black and you can smell the gas when its running.. also when I put the car in the garage you can smell gas for a while.. also I put a curve kit in the distributer and it running at 12 deg static and 36 deg at full advance
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Old Apr 15, 2006 | 12:19 AM
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I am having the same "exact" problem, put on an Edelbrock #1406 600 cfm carb and I get the same things you have described, to the letter. The Tech at Edelbrock suggested pink (heavier) springs & 1 size bigger rods. These go under two caps right on top of the carb, so it's a very simple swap. It helped alot. I live in Wi and it was worse when it was cold out. When it warmed up or ran for awile, the smoke went away. I am still not real happy with the carb...........
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Old Apr 15, 2006 | 02:25 PM
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do you know the part numbers and did you change the jets also
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Old Apr 17, 2006 | 12:00 PM
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look down in the carb when it's running, if you see gas dripping you've got dirt in the needle and seat, holley's are known to do this. If it happened, drain all the gas out of the carb and crank the motor, usually the rush of gas will clear it out.
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Old Apr 17, 2006 | 12:09 PM
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Order the carb jet/rod kit from summit or jegs.......you can get the instructions directly from the Eldelbrock website. Very simple to do......rods take about 5 minutes to change, jets take a little longer cause you have to take the top body of the carb off.

I personally think it's to much carb for a stock 81..........and that's from personal experience.
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