C3 cold engine start problem
Thread Starter
3rd Gear
Joined: Nov 2016
Posts: 3
Likes: 0
From: Poznan
C3 cold engine start problem
Hi I am new.
I bought Corvette C3 1977 in Florida and imported to Poland.
Everything works great but I have one problem to be solved.
When I try to start cold engine after depressing gas pedal 4-6 times before the operation, engine fires up for several seconds and then dies.
It seems that engine can not operate on slow turns. When I try to add gas when engine operates to warm it up it dies momentally.
I have to repeat the operation 6-9 times (each time engine fires up and dies) than after 9-10 tries engine is operating on slow turns.
When engine is warm it fires up and operates on slow turns at the first time.
Battery is a brand new, plugs are new, high voltage wires are new.
It could be a problem of the fuel pump or carburetor.
I do not want to change to many things that is why I looking for giving me a hand in this case.
I bought Corvette C3 1977 in Florida and imported to Poland.
Everything works great but I have one problem to be solved.
When I try to start cold engine after depressing gas pedal 4-6 times before the operation, engine fires up for several seconds and then dies.
It seems that engine can not operate on slow turns. When I try to add gas when engine operates to warm it up it dies momentally.
I have to repeat the operation 6-9 times (each time engine fires up and dies) than after 9-10 tries engine is operating on slow turns.
When engine is warm it fires up and operates on slow turns at the first time.
Battery is a brand new, plugs are new, high voltage wires are new.
It could be a problem of the fuel pump or carburetor.
I do not want to change to many things that is why I looking for giving me a hand in this case.
Drifting
Joined: Dec 2004
Posts: 1,714
Likes: 42
From: Austin Texas
From reading the description, it sure sounds carburetor choke related to me.
What kind of carb do you have?
Does it have a Choke and is the choke working?
I would experiment adjusting the choke and fast idle screw to see of that helps.
John
What kind of carb do you have?
Does it have a Choke and is the choke working?
I would experiment adjusting the choke and fast idle screw to see of that helps.
John
Thread Starter
3rd Gear
Joined: Nov 2016
Posts: 3
Likes: 0
From: Poznan
I am not good at it I will take a picture and post it here tomorrow.
Regards
Andy
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,289
Likes: 9,418
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Sounds like the choke to me also. Post picks with the air cleaner off , both left and right sides of the carburetor please. Thanks
Thread Starter
3rd Gear
Joined: Nov 2016
Posts: 3
Likes: 0
From: Poznan
Ok I plan to take pics tomorrow afternoon my time (European time) I will post them. Thank you for your help. I really appreciate it.
Andy
Andy
Last edited by Andrzej Zywica; Nov 6, 2016 at 05:45 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette & Porsche 911: How Two Icons Conquered the Last 25 Years
Joe Kucinski
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!
Michael S. Palmer
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
Safety Car
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
and once that overdose (4-6 pumps) of gas is burned, it dies due to choke not working,
which would keep the fuel mixture rich until warmup.
Check the choke operation thoughly, your 4-6 pumps is a bandaid for the real problem.
which would keep the fuel mixture rich until warmup.
Check the choke operation thoughly, your 4-6 pumps is a bandaid for the real problem.
Last edited by 69Vett; Nov 8, 2016 at 12:06 PM.