C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

carb problem

Thread Tools
 
Search this Thread
 
Old Oct 20, 2005 | 04:45 PM
  #1  
rhill13's Avatar
rhill13
Thread Starter
Heel & Toe
 
Joined: Jun 2005
Posts: 19
Likes: 0
Default carb problem

My 73 L82 auto I purchased about 6 months ago. Ever since then it was hard starting even without cold weather. This happens just the first time I start that day. At first when turning it over it doesn't start. Then on the second try it will start while pumping the gas, but then dies after increasing to around 2000 rpm first and staying there for a couple of seconds. If I give it gas to stay alive it will. After that, it starts with a little gas. It seems to high idle for too long as well. I stays around 2200 rpm then after around 5 minutes of driving it comes down to around 1200 rpm. In another 5 minutes or so, 600 rpm, much better. Sometimes it will also idle around 2200 rpm while in park, but then come down to a much more respectable level when in gear. This gives the car a nice jerk while getting into gear.

Do you think I should rebuild my carb or just buy a new one if this is the answer?
Reply
Old Oct 20, 2005 | 04:56 PM
  #2  
Fevre's Avatar
Fevre
Race Director
15 Year Member
 
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Default

If it runs fine after warmed up then it prolly just needs a little choke adj.
Reply
Old Oct 20, 2005 | 05:28 PM
  #3  
lars's Avatar
lars
Tech Contributor
Supporting Lifetime Gold
25 Year Member
Conversation Starter
Photogenic
Top Answer: 3
 
Joined: Aug 1999
Posts: 14,370
Likes: 6,364
From: At my Bar drinking and wrenching in Lafayette Colorado
Default

If you drop me an e-mail request for it, I can send you my choke setup paper for the Q-Jet. You can't buy new Q-Jets anymore, so rebuilding it is your option if the adjustment does not solve the problem.
V8FastCars@msn.com
Reply
Old Oct 20, 2005 | 05:46 PM
  #4  
fugawi's Avatar
fugawi
Melting Slicks
10 Year Member
 
Joined: Jun 2004
Posts: 2,077
Likes: 0
From: westmoreland N.H.
Default

all hail the great & wise LARS!!!!!
Reply
Old Oct 20, 2005 | 11:05 PM
  #5  
comp's Avatar
comp
Team Owner
10 Year Member
 
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Default

Originally Posted by fugawi
all hail the great & wise LARS!!!!!
Reply
Old Oct 21, 2005 | 12:40 AM
  #6  
rhill13's Avatar
rhill13
Thread Starter
Heel & Toe
 
Joined: Jun 2005
Posts: 19
Likes: 0
Default

Thanks. I didn't know it could be adjusted for high idle. I adjusted the choke when it was thoroughly warmed up. That didn't do much for the high idle being so high at the time.
Reply
Old Oct 21, 2005 | 09:30 AM
  #7  
comp's Avatar
comp
Team Owner
10 Year Member
 
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Default

the book is worth the $
Reply

Get notified of new replies

To carb problem





All times are GMT -4. The time now is 12:48 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE