79 Silverado all kinds of issues

[RE4PER]

When I closed butterflies a hair it ran fine. Let em open where they were and back to the same ordeal. New carb is a stock replacement. I'm divorced and can't afford a nice one. Atm just need her drivable again.

[RE4PER]

Yes it's a quadrajet and it's the rod that is inside the carb.

[blazer74]

It will not run correctly if that's the case unless you replaced the rod with a matched rod. Even if there bent you will have problems. The power piston is probably being held open causing richness and surging etc.


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[RE4PER]

Well just got the new carb going to install now. Any tips I'll need?

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[fitz]

The carb was rebuilt after the distributor was installed. And with what research I did was pointing to carb. Pump is giving fuel with no problems plugs n wires are 3 months old distributer brand new. So tweaking with the carb my helper lost a spring from inside and snapped one of the choke rods hence y I'm getting a new one.

  Was the "helper" that lost the spring and broke the choke rod  the same person that rebuilt your carb?
   If so, I'd like to change my answer.
  Assuming that your motor has no internal issues such as a worn cam or jumped timing chain, it sounds like your heading in the right direction.
  With a good ignition system, all you need is gas & air and it will run.
  Let us know if the new carb solves the problem.

[RE4PER]

Carb got her idling now to keep her running while in gear

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[fitz]

Carb got her idling now to keep her running while in gear
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So is It running & driving now?

[RE4PER]

For the most part. She idols and drives but hit the break shuts off. Driving a automatic like a stick. Put In netrual feather the gas while on break to keep her going. Any thoughts?

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[Irish_Alley]

Sounds like your brake booster is leaking.

[RE4PER]

Like vacuum? Would that cause it to shut off in gear?

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[RE4PER]

Also not 1oo% on if I did my vacuum lines right. New carb has different ports. Ended up plugging vacuum advance to keep her going. Correct me if I'm wrong but u plug advance while timing correct?

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[Irish_Alley]

if you hit the brakes and it dies or you hear a hissing sound then the booster is bad. it could also be running poor and any leak like a booster will kill the engine

[fitz]

Yes, you unplug the vacuum line when you set the timing.
Got a few things to check.
Does the timing change when you disconnect the vacuum line from the dist? (It should).
Did you set the iddle mixture screws using a vacume gauge?
How does it run? (besides the stalling). Can you shift it in & out of gear while stationary  with your foot on the brake pedal without it stalling?
Does it  iddle well in gear?
Is the choke working?
Sounds like your getting close, your allot better off now then you were this morning.
A little fine tuning on the timing and setting the iddle can make a big difference.
Like Irish said, pay attention to your brake booster and check it for leaks.

[RE4PER]

Ok no screws for air fuel on this carb it has a dial on the passenger side for rich lean. This carb has a heated choke. Not 100%sure what the other one had. Before we  removed the vac advance and plugged timing did change. With it unplug put it at 8 degrees. Yes advanced hooked up it would shift gears while stationary. But while moving (in gear) she can go about 25 3o without my help (on the gas) however stopping she shuts off. We temporary fixed this with Un hooking advance and plugged it. So with that plugged and putting her in netrual when stopping I can drive her with feathering the gas every now and then. No vacuum gauge was used due to I don't have one. Kinda spent after getting a new carb and distributer.

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[RE4PER]

Once again thanks for all the help so far

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