can you manually adjust the idol on the Rochester carb for a 350 small block?

40

Asked by Nov 21, 2012 at 05:18 AM about the 1981 Chevrolet Corvette Coupe

Question type: Maintenance & Repair

My '81 has high idle speed and will not kick down. Choke light stays on dash.
1200-1800rpm range. Thank you.

6 Answers

16,885

Its not the idle. You choke is sticking and keeping you at a fast idle. Yes you can adjust idle speed, but that will only act as a crutch to your problem. Repair or disable the choke.

2 out of 2 people think this is helpful.
315

No, do not disable the choke, you will have hard start problems and the air fuel ration will be out of sinc. These are the first computer control carbs for the Corvette. Either have it rebuilt by a shop that knows the style of carb or buy a new /rebuilt from any Corvette parts supplier like Corvette Central, Ecklers, etc.

2 out of 2 people think this is helpful.
455

YO TCXD40; HADN'T MANUFACTURERS STARTED THAT ADJUST & SEAL THE SET SCREWS BULL ABOUT THAT TIME??

1 out of 1 people think this is helpful.
315

Yes the mixture screws are covered in a steel cap that was cast into the base so to speak. Special tool required ti drill the area around the cap and remove so they can be adjusted.

3 out of 3 people think this is helpful.
40

Thx guys...all helpful hints...found that elect. choke was still ok, but insufficent voltage preventing activation. Sorted out the voltage issue and she now idles at 600rpm...nice work.

3 out of 3 people think this is helpful.
315

Glad to know she's running again....

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Corvette

Looking for a Used Corvette in your area?

CarGurus has 20,545 nationwide Corvette listings starting at $3,688.

ZIP:

Search Chevrolet Corvette Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet Corvette Experts

#1 John Carson
John Carson
Reputation 2,070
#2 carGrrl
carGrrl
Reputation 1,340
#3 Tom Demyan
Tom Demyan
Reputation 1,200
View All

Related Models For Sale

Used Chevrolet Camaro
443 Great Deals out of 40,684 listings starting at $3,500
Used Ford Mustang
576 Great Deals out of 42,797 listings starting at $1,699
Used Dodge Challenger
339 Great Deals out of 25,161 listings starting at $7,988
Used Porsche 911
136 Great Deals out of 4,468 listings starting at $8,901
Used Dodge Charger
497 Great Deals out of 30,244 listings starting at $2,275
Used Ford F-150
3,070 Great Deals out of 208,275 listings starting at $1,200
Used BMW 3 Series
1,521 Great Deals out of 38,937 listings starting at $1,495

Used Cars For Sale

2017 Chevrolet Corvette For Sale
8,583 listings starting at $43,500
2016 Chevrolet Corvette For Sale
27 Great Deals out of 2,484 listings starting at $43,987
2015 Chevrolet Corvette For Sale
34 Great Deals out of 871 listings starting at $40,694
2014 Chevrolet Corvette For Sale
25 Great Deals out of 875 listings starting at $39,442
2013 Chevrolet Corvette For Sale
23 Great Deals out of 412 listings starting at $26,988