C3 Vette Registry - The Best Resource on the Net for C3 Vettes! C3 Vette
Forums -> C3 Engines
Not Logged In! Login or Register!  Users Online: 27 / Help 
Features  Find C3 Parts on ebay in only 2 or 3 clicks!  | Add YOUR C3 to the Registry

Supporting Vendors
Bair's Corvettes
CorvetteClothing.com
Volunteer Vette Products
VetteBookStore.com
Mid America Motorworks

C3 of the Month
None Current
Enter Yours Today!
Online C3 Show
13
C3s are Registered

Vanity Plates
72FOUR54
Mark72LS5
Featured Links

Buy Now
Corvette by the Numbers
Corvette by the Numbers


Chevrolet Corvette: 1968 thru 1982, All V8 models (Haynes Manuals) (Paperback)
Chevrolet Corvette: 1968 thru 1982, All V8 models (Haynes Manuals) (Paperback)


Corvette from the Inside
Corvette from the Inside


Corvette: America's Sports Car Yesterday, Today, Tomorrow (Hardcover)
Corvette: America's Sports Car Yesterday, Today, Tomorrow (Hardcover)



| Hide Signatures and Profile Pics

 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1]  
8/4/18 4:38am - Original Message: 'cold starting without choke'
NJAus
Limited Member
- Send Private Message


, - Australia

Vette(s):
Currently own a white 1969 427 Big Block Coupe C3 Corvette

Joined: 6/6/2018
Posts: 27
Hi All,

I was wondering what everyones procedure was to cold start their car without choke on a cold morning. Where I live a cold morning would be 46 degrees farenheit.

I pump twice and crank it for 5 secs, and repeat this procedure 3 times minimum until I get the car to fire up and stall, then one more pump it starts fine and about 30 secs of dancing on the throttle.

Should I be cranking it for longer after the first two pumps or keep cranking until it fires up after the initial pumping?

Will cranking it for longer drain my battery? I don't know if my current method is injecting to much fuel into the engine. Its definitely not flooding the engine as there is no overpowering fuel smell and the car does start.

Car is a 69 427. New starter, new plugs, recently rebuilt and tuned quadrajet. The choke coil was stretched so the choke mechanism was removed.

Thanks,

NJ
 Reply Reply  Quote Reply w/Quote
 
Support C3VR!
Suport our advertisers
8/4/18 9:25pm - Reply: 'Re: cold starting without choke'
73shark
Standard Member
- Send Private Message


Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.

Joined: 7/9/2003
Posts: 498
The easiest thing to do would be to get a new choke spring. The starter motor is not a continuous duty motor so it should never be run continuously longer than about 5 seconds or so without a cooling-off period. My experience with GM V8s is that they are very hard to start with no choke at all.

____________________________________

1973 L-82 4 spd

 Reply Reply  Quote Reply w/Quote
8/4/18 10:10pm - Reply: 'Re: cold starting without choke'
F4Gary Gold Member
Gold Member
- Send Private Message


Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 942
Fix the choke.

____________________________________
 Reply Reply  Quote Reply w/Quote
8/5/18 11:55am - Reply: 'Re: cold starting without choke'
knotacare
Standard Member
- Send Private Message


Newark, DE - USA

Vette(s):
1968 Conv, 454HO,500HP-600TQ, TKO-600,3:70 HD rear,hotrod air, custom paint & suspension,1973 Ruby Red,T-top, 383 Stroker, TK)-500,frame off restro, 1977 Yellow (1 of 51 ) L-48 4 spd, 99% original.

Joined: 7/26/2004
Posts: 458
I have a 68 w/ Gen VI 454 with no choke & prefer it that way. The reason being BB"s get so hot that starting one hot with a chock is  PIA.  I usually pump it 3 to 4 times  and it starts right up. When it starts you have to pump it a bit & keep the idle up to around 2k for 15 to 30 seconds or so. Then it's fine for the day because BB's retain heat much more than a SB. I also installed E3 spark plugs that make a difference. Make sure your carb isn't to lean & it's jetted correctly for you altitude.
Alan


|UPDATED|8/5/2018 9:55:59 AM (AZT)|/UPDATED|


____________________________________
                                               
 Reply Reply  Quote Reply w/Quote
8/6/18 3:22pm - Reply: 'Re: cold starting without choke'
art-corvette
Standard Member
- Send Private Message


Joined: 8/16/2005
Posts: 241
for a cold start i need full(manual) choke   . i tried with no choke or even half choke but then i  have to keep cranking and cranking..pumping etc.took sometimes long time before getting started .........sometimes the carb got flooded because of that ....so for me full choke works best.

arthur


____________________________________
 Reply Reply  Quote Reply w/Quote
9/11/18 4:12pm - Reply: 'Re: cold starting without choke'
NJAus
Limited Member
- Send Private Message


, - Australia

Vette(s):
Currently own a white 1969 427 Big Block Coupe C3 Corvette

Joined: 6/6/2018
Posts: 27
As an update, I had a multitude of problems causing issues including
1) Battery that had dropped a cell
2) Distributor not transferring voltage to the spark plugs (cap and rotor were not in good shape)
3) Spark plugs fouled
 
I also put in a new carburettor with electric choke. Choke is probably only set to 1/4 close. Could probably use a bit more closing but it's great improvement.
 
 
 
 
 Reply Reply  Quote Reply w/Quote
9/11/18 7:56pm - Reply: 'Re: cold starting without choke'
73shark
Standard Member
- Send Private Message


Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.

Joined: 7/9/2003
Posts: 498
My experience with carbureted Chevy V8s, both big blocks and small blocks, is that they start a lot better when cold with a fully closed choke and one pump. YMMV

____________________________________

1973 L-82 4 spd

 Reply Reply  Quote Reply w/Quote
9/11/18 9:34pm - Reply: 'Re: cold starting without choke'
NJAus
Limited Member
- Send Private Message


, - Australia

Vette(s):
Currently own a white 1969 427 Big Block Coupe C3 Corvette

Joined: 6/6/2018
Posts: 27
I will probably adjust it to fully closed
 Reply Reply  Quote Reply w/Quote
 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1]  
 Forums -> C3 Engines
(Moderator: Adam Wartell, Norsky, Adams' Apple)
 

 
Official C3 Vette Registry Community:
Home | Forums | Email | Who's Online | Clubs | Events | Member Stats

Other Official C3 Vette Registry Areas:
Members | Research | Shop | My Account | About C3VR
 

Corvette is a registered trademark of the General Motors Corporation(GM) & Chevrolet Motor Division. Vette Registries, LLC is responsible for all site content (except for member submitted content or where otherwise noted) and does not claim or imply that Chevrolet or GM is responsible for Official C3 Vette Registry content. Vette Registries, LLC is independent from GM and is not affiliated with, sponsored or supported by GM.  Copyright/trademark/sales mark infringements are not intended, or implied and are in fact used to support GM, Chevrolet and Corvette

Official C3 Vette Registry content is Copyright 2001-2018, Vette Registries, LLC. Content may not be reused without written consent. All Rights Reserved. NS

Corvette (Vette) Model Years on this site: 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 30