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For the choke, try this: http://www.corvetteactioncenter.com/forums/l81-vette-registry-forum/102283-81-choke-problem.html I'd replace that float. The only fatal problem for our carbs is a porous casting, and those are fairly rare. Try the choke set up proceedure, replace the float, take two...

So Lanny, What is going on with your carb now? Still getting unmetered fuel from somewhere? Did you change out that brass float? God bless, Sensei

Mine is black but a lot of guys on here swear theirs were blue stock.

What part of town are you in and can you limp the car to Orange Park? I'd like to hook my diagnostic computer to it, although I don't count on it helping. If it is the carb, I'd be willing to rebuild it for you for the cost of the materials, the only problem is when I'll have the time. God...

I am rehearsing for my church's Christmas musical this afternoon until about 3:00. Give me a call then and we'll see about getting together (755-6199) God bless

Wiring or connections may be bad. Usually the middle of a wire is never the problem, so I would check and clean the connections at the computer, carb (MC and TPS), distributor (4 pin), O2 sensor, vacuum sensor (on driver's side firewall) and temp sensor (front passenger side if intake manifold)...

Automatic (I changed it to a BTO TH700r4), dark blue interior and gymkhana suspension. Yes, the wire should have 12 volts with the ignition switch on. God bless, Sensei

This is incorrect, the '81 CCC is a very simple system. It advances timing based on engine RPM and load (vacuum sensor) from the base setting. Also, a dial back light makes things simpler and allows you to check timing throughout the rpm range, but setting base timing with a standard light is...

Yes, the loose wire is your problem. The green plug is a test lead, but the gray plug on the light green wire is the power to the choke, plug it in! God bless, Sensei

Manual says 6BTDC. I run 14 BTDC as recommended by a GM engineer who said stock was to meet some fed emissions mandate, 14 would give better performance and fuel economy. My experience says he knew what he was talking about. God bless, Sensei

You need a 1981 GM Corvette service manual. You can find them on Ebay. eBay Motors: 1981 Corvette GM Shop and Service Manual (item 260316678124 end time Dec-15-08 19:12:12 PST) This one is a bit pricey, but I found mine for $9 missing the front cover. I saw others go for around $30. This...

The gasket should have been in your carb kit (it is usually white plastic). Try a boneyard or ebay quadrajet for the spring. God bless, Sensei

Several things can cause this. Try the simple stuff first. Get a can of Caig Labs Deoxit (you can find it on ebay). Use it to clean all those 28 year old Computer Command Control electrical connections. This is a good thing to do even if it does not fix the problem you are having right now (but...

The computer scan tool you need is an OTC Monitor 2000. eBay Motors: OTC SYSTEM 2000 DIAGNOSTIC SCAN TOOL (item 110314926989 end time Nov-29-08 17:52:06 PST) Keep an eye out, I got one off ebay for $25. If your MC solenoid is clicking, I think you are in closed loop. My computer says when...

LANNY! It looks like you are missing the vacuum brake for the secondaries! It is a little metal "flying saucer" just in front of the choke housing that connects to the secondary air valve. If I'm remembering correctly, this would cause problems when going to WOT. God bless, Sensei P.S. Yes...

Sounds like time for a TH700r4:D God bless, Sensei

I have not seen the stock one. But the best deal I've seen on the Hypertech is at Autozone, for about $120, why not get one. I don't think the chip is anything the NCRS guys would grade the car on. God bless, Sensei

Sorry, no digital picture (a 1981 computer controlled carb is as close to high tech as I get). But I did look at my connector, and If yours is like mine, the wires come out of the connector to one side. That side is toward the front of the car (not inward toward the carb). Hope this helps. God...

Mine has a clip that will only allow it to go on one way. If you had it plugged in backwards, you may have damaged the MCS. God bless, Sensei

You can look in the primary bores and see the idle needles sticking into the bore as you screw them all the way in. They intersect a fuel passage outside that point (in the throttle plate) and then form a restriction in that hole leading to the primary bore. As you screw them out, it allows more...