Sponsored Content
So I still have my hesitation, I checked the plugs to make sure all was connected, rechecked the firing order, thats all good. Put my trusty Champion spark plug pen on the wires when car was running to make sure wires were sending voltage to the plugs (love that antique pen) seperated the #5 & #7 wires to make sure they are not cross fireing.
ebo
When it's in 3rd gear overdrive (Auto) and has any slight hill to climb it bucks slightly, no back fires, if I shift it down its better.
Had the tops off the other day (took ebo woman to lunch topless) I could here a chirping sound matching the tune of the RPM's of the transmission.........
So now I'm thinking I may have knocked a vacume line off...or the "Rook" cut one of my hoses.
Thoughts.............I know Joel nuttin a match can't fix!
ebo
eboBe the first to like this post
Sign In to Like this post
Sign In to Like this post
SPONSOR AD:: (Our Sponsors help support Vette Registry)
m
Lifetime Member
Send PMEquinunk, PA - USA
Joined: 10/31/2007
Posts: 2570
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.
Bucking, May be the carb. It is called a "Tip in stumble". Worn carb at a certain RPM. Gas at the top of the plate does not match the vaccume at bottom, or vice versa. Solved mine with a re-build.
The chip could be a "U" joint goin bad/dry. Rock it back and forth on flat ground by hand and see if ya feel any grateing or roughness in the tire or driveline. DO NOT run it with tires off the ground, NOT GOOD for the half shafts/U-joints. Then do a process of elimination. 
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Mark I was thinking carb, this car sat for so long it may have some gumming or crude comming loose now that it's getting some miles on it. I'm going to try and look at it today after work. I'll see if I can here the chirping while its in park. All U- Joints are original...........Maybe you need to come up a few day's early at the end of the month.....
ebo
eboBe the first to like this post
Sign In to Like this post
Sign In to Like this post
Lifetime Member
Moderator
Send PMModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22715
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Why waste a match? 
A "chirping" noise, along with the bucking/hesitation, kinda sounds like an EGR issue, but it could very well be a vacuum leak...somewhere. Your mission, Mr. Phelps, should you decide to accept, is to find said vacuum leak, and repair. As always, if you, or any of your vacuum impossible crew should be found and fixed, we shall disavow any knowledge of your existence....
And...maybe check the carb baseplate/gasket...
A 3 speed overdrive?
Adams' Apple 2011-07-12 05:26:11
A "chirping" noise, along with the bucking/hesitation, kinda sounds like an EGR issue, but it could very well be a vacuum leak...somewhere. Your mission, Mr. Phelps, should you decide to accept, is to find said vacuum leak, and repair. As always, if you, or any of your vacuum impossible crew should be found and fixed, we shall disavow any knowledge of your existence....
And...maybe check the carb baseplate/gasket...
A 3 speed overdrive?
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Joel pretty sure I replaced that but i'll check it also....I forgot..... do you blow in the vavle to see if it's good .....or try to suck air out to see if it's good? 
ebo
ebo 2011-07-12 05:28:00
I think I'll just shake it...........and see if it sounds like one of your pet snakes.
eboThanks bro
Overdrive , lock up what ever you tranny guys call it......
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Check for a bird's nest.
Dave
Lifetime Member #116
Dave's '82 
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
You're such a mechanic, Dave!
Barry
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
m
Lifetime Member
Send PMEquinunk, PA - USA
Joined: 10/31/2007
Posts: 2570
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.
I would be MORe than happy to help.Be the first to like this post
Sign In to Like this post
Sign In to Like this post
The tip in as Mark puts it is a setting in the carb that is done with those GM tools..I don't have....the stumble very well may be the egr valve not fully closed or maybe slightly stuck open..plate off the egr and see if it goes away..
My first parade at Carlisle 2010
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Heh Rich, thanks..."plate off the EGR"? Do you mean remove and block hole in valve cover?
ebo
ebo Be the first to like this post
Sign In to Like this post
Sign In to Like this post
in Forum: C3 Engines, Driveline and Handling
Sponsored Content