82' Z28

It never closes ever, start of the day its a bit open, start it, idle to crsing speed for 15 mins has it at almost half mast/12 o' clock(straight up) but giving it any gas starts to kill it and it'll die if I give it too much even little amounts

If I could fix this I could have a working vehicles without replacing my carb, ideas besides general carb cleaning and manually moving it?

sofakingdom

iTrader: (1)

Sounds like 2 separate unrelated questions:

1. Is this normal choke operation?
2. Why does it die when I give it gas?

"Never closes ever" is not right. It should go to full closed at any temp below around 60°F or so. The part about it being full open after 15 min is about right though.

The other issue sounds like just general fuel starvation. Stopped up fuel filter, trash in the carb orifices, etc. More details would help narrow it down; but I'd start with the simple thing. Change the fuel filter.

82' Z28

Normal choke operation?

And I gotcha its what I was trying to get across. Even after a whole night's cooling stays at like 25% open and 15 mins in its almost fully open but not at 12 like ive seen in vids.

I changed the fuel filter before discovering this problem and changed it again since and it persists.

82' Z28

Its on and off with my adjustments but it's also been leaking fuel from the carb in the one corner close and to the right if you're looking at it from infront of the hood.

But the peaking out and dying was happening without the fuel leak (I'd remounted the carb and re sealed a bit and the fuel leakin stopped)

I also changed the plugs sparks recently and paid to have vacuum tubes fixed but I think there may still be a couple not setup but I doubt they're causing this

82' Z28

http://imgur.com/a/F8pdv - pics

82' Z28

Also i can cruise around but when I try to pick up speed it starts killing it I've changed the fuel pump recently.

sofakingdom

iTrader: (1)

Still sounds like fuel starvation.

Might wanna see if the fuel bowl is staying full... drive it around, make it malfunction REAL GOOD, then WHILE IT IS IN THE ACT OF SCREWING UP, turn the key to Off (NOT Lock!!!!) and take it out of gear at the same time and pull over to the side of the road; and pop the top off the carb and see how much fuel is in the bowl. Remember, the object of the exercise is to catch it WHILE IN THE ACT OF SCREWING UP; make sure you DO NOT let it idle, DO NOT let the engine brake the car, DO NOT do anything that will alter the state of the fuel bowl IN ANY WAY from whatever it is WHILE IN THE ACT OF SCREWING UP. You want to freeze that moment in time so that you can inspect it. If you let it idle AT ALL, even for just acoupla seconds, it will have the opportunity of low fuel demand to allow the fuel system to replenish the bowl, even if it was totally empty WHILE IT WAS IN THE ACT OF SCREWING UP. You want to see EXACTLY what it was like WHILE IN THE ACT OF SCREWING UP. Since you can't see inside it while driving down the road, this is the next best way to catch it in the act.

You will observe one of 2 things: either the bowl will be empty, or it will be full. If empty, you have a pump/line/pickup/tank problem. If full, you have a carb problem.

gearhead141

Does this car have an in-tank fuel pump? If it was an L69 car than it probably does, and it may not be working. This would create a big obstruction to the fuel flow. The choke issue could be as simple as checking the circuit for 12vdc at the connector. There is also the issue of not having a paper gasket under the choke cover as it must be grounded. The paper gasket is for heated choke mechanisms, not electric.

Sure hope you get to the bottom of the problem.

hockeyman48

Assuming you have a mechanical fuel pump rather than an electric in tank pump , make sure the rubber hose connections on gas lines have not aged and collapsed . I've seen this happen often.They are above rear axle on driver side as well as engine bay hoses.The choke may just need a full open adjustment after engine is at operating temperature to correct full up 12 oclock position assuming the electrical to it is operating correctly.Also you can check accelerator pump in carb for a full squirt of fuel (with engine off) for indicating a low fuel bowl level.You could even do as Sofakingdom suggested by pulling off road when problem arises and check accelerator pump operation which will approximate fuel bowl level. Good Luck.