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7/12/10 10:07pm - Original Message: 'edelbrock carb problems please help'
frstvette
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Fresno, TX - USA

Vette(s):
1980 corvette

Joined: 1/15/2007
Posts: 240
I have a 80 vette with edelbrock preformer intake and a 1805 thunder 650 cfm series carb.  My car has a small cam. headers, no cat. My car is running rich. Is the 650cfm to much for the car? black soot in the tail pipe and it seems like im getting 6 miles to the gallon. I have a chance to buy a edelbrock 1806 for 140.00 only 300  miles on it. What should I do? The car seems to run great no back fire will maybe a slight miss from what I was told.

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7/13/10 7:08am - Reply: 'edelbrock carb problems please help'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19457
The 650cfm shouldn't be too much for the car. Might just need the float levels set. A "slight miss" might be a symptom of running rich, too. I'd have the carb checked out to see if there is a problem with it.
A weak spark from the ignition system could also create this issue. Have you checked the plugs to see what they look like? When was the last time the engine was tuned up(plugs/wires/cap/rotor etc)?


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Joel Adams
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7/13/10 7:32am - Reply: 'edelbrock carb problems please help'
frstvette
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Fresno, TX - USA

Vette(s):
1980 corvette

Joined: 1/15/2007
Posts: 240
well I had new plugs and the car tuned up by pros but never realy got to drive it because I so many other issues to work on with the car. Now Im at a point where I can drive it and it is running rich and burns a lot of gas. If a 650 is not to much I guess I will buy the carb for sale. My concern was that the 650 was to much for the car and it was putting in more fuel then the car can handle. When I first push carb from under the hood it drips gas just a little then sprays. The new carb has a electric choke what do I hook the positive wire to?

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7/13/10 7:50am - Reply: 'edelbrock carb problems please help'
KeBo
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Kendall Park, NJ - USA

Vette(s):
1981 - 59 Beige over Cinnebar leather. Edlebrock top end, 2200 stall w/shift kit, 3:55s, Mufflex maniback exhaust, nice stereo, 16 in AREs w/BFGs

Joined: 3/9/2005
Posts: 789
I have the same intake combo on my 80.  I get about 12 mpg and 16 hiway.  The car runs great and its the perfect carb..
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7/13/10 8:11am - Reply: 'edelbrock carb problems please help'
frstvette
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Fresno, TX - USA

Vette(s):
1980 corvette

Joined: 1/15/2007
Posts: 240
do you have auto choke or automatic? guess I will buy carb hope this fix the problem its cheaper then having this one rebuilt

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7/13/10 11:35am - Reply: 'edelbrock carb problems please help'
KeBo
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Kendall Park, NJ - USA

Vette(s):
1981 - 59 Beige over Cinnebar leather. Edlebrock top end, 2200 stall w/shift kit, 3:55s, Mufflex maniback exhaust, nice stereo, 16 in AREs w/BFGs

Joined: 3/9/2005
Posts: 789
I have the automatic - I should have said I have an 81, not an 80....  Essentially the same being the computer and smog is all removed. It cost me 150.00 to have my Qjet rebuilt so 140.00 for a new carb aint bad..
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7/13/10 12:18pm - Reply: 'edelbrock carb problems please help'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19457
IF the car has been sitting for a while, while you do other things to get it road-worthy, it's possible there is some doo-doo in the carb, even tho it was clean when you installed it originally. Could even have something in the needle & seat that is causing it to flood a little.
Definitely sounds like you have a carb issue. Replacing it may cure it, but it might only be a minor issue that could be fixed quickly, and painlessly, too.


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Joel Adams
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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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7/14/10 10:54am - Reply: 'edelbrock carb problems please help'
MikeMc71
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Tucson, AZ - USA

Vette(s):
1970 White L-46 Air Roadster, 1971 White LT1 Coupe, 1971 Red Auto Air Coupe, 383 stroker, 430 HP, 2002 Millennium Yellow Auto Coupe

Joined: 10/7/2007
Posts: 341
A agree with Joel, the other problem is the replacement carb. You say it only has 300 miles on the carb, but has it been sitting for quite some time as well? How can you be sure it won't have the same issues as the one you have now? A good rebuild and flow test by a pro can really help, and the replacement may need the same thing as the one you have. These carbs are pretty simple, and almost bullet proof. I think I would go for the rebuild, myself. You might end up with two that don't work right.

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7/14/10 11:51am - Reply: 'edelbrock carb problems please help'
frstvette
Former Member
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Fresno, TX - USA

Vette(s):
1980 corvette

Joined: 1/15/2007
Posts: 240
ha ha ha listen to this. When I bought the first carb I was not for sure how old it was.
They said it was kind of new. Found out the metering rods had been changed and the jets. I pulled them out and matched them with stock. I called edelbrock and they told me that is a rich mix from stock. I bought the new one from the guy with about 200 miles and it looks great. pulled the metering rods and they match stock. That is why car was running rich. going to put in the new carb 


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7/14/10 12:19pm - Reply: 'edelbrock carb problems please help'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19457
There ya go!

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Joel Adams
C3VR Lifetime Member #56    
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(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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9/19/11 8:46pm - Reply: 'Re: edelbrock carb problems please help'
eldredjames Lifetime Member
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Temple City, CA - USA

Vette(s):
1969 Daytona Yellow. 350 / Automatic.

Joined: 10/3/2010
Posts: 361
frstvette said: ha ha ha listen to this. When I bought the first carb I was not for sure how old it was.
They said it was kind of new. Found out the metering rods had been changed and the jets. I pulled them out and matched them with stock. I called edelbrock and they told me that is a rich mix from stock. I bought the new one from the guy with about 200 miles and it looks great. pulled the metering rods and they match stock. That is why car was running rich. going to put in the new carb 


How did this work out for you?

jim


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9/20/11 7:43am - Reply: 'Re: edelbrock carb problems please help'
fp_vetter72 Lifetime Member
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COPPERAS COVE, TX - USA

Vette(s):
1972 corvette stingray convertible 2007 coupe

Joined: 7/6/2002
Posts: 412

Just a little more info, I was having problems with my carb on the truck. If you go to you tube summit has some good vids on setting the edelbrock carbs...

http://www.youtube.com/results?search_query=edelbrock+carb+tuning&aq=0&oq=edelbrock



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9/21/11 2:20pm - Reply: 'Re: edelbrock carb problems please help'
eldredjames Lifetime Member
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Temple City, CA - USA

Vette(s):
1969 Daytona Yellow. 350 / Automatic.

Joined: 10/3/2010
Posts: 361
fp_vetter72 said:

Just a little more info, I was having problems with my carb on the truck. If you go to you tube summit has some good vids on setting the edelbrock carbs...

http://www.youtube.com/results?search_query=edelbrock+carb+tuning&aq=0&oq=edelbrock


Thanks for the link.  Looks like I need to search youtube these days.



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