Truck wants to die after few min of driving

[gwandro]

I have a 82 Chevy k10 with a 350 in it
I’ve been trying a bunch of different things to fix it.
After maybe about a few minutes of driving it wants to die down and lose power sometimes almost shutting off but doesn’t. I’ll go over the things I’ve replaced
Did the cap and rotor first
Then bought a whole brand new msd distributor
Tried brand new carb
Rebuilt old carb
Brand new fuel pump
Has brand new plugs and wires
All the timing was adjusted
After all this it still runs perfect until I get a few minutes down the road and just wants to die

 

[Ricko1966]

I have a 82 Chevy k10 with a 350 in it
I’ve been trying a bunch of different things to fix it.
After maybe about a few minutes of driving it wants to die down and lose power sometimes almost shutting off but doesn’t. I’ll go over the things I’ve replaced
Did the cap and rotor first
Then bought a whole brand new msd distributor
Tried brand new carb
Rebuilt old carb
Brand new fuel pump
Has brand new plugs and wires
All the timing was adjusted
After all this it still runs perfect until I get a few minutes down the road and just wants to die

How did this problem start?

 

[legend57]

Get a fuel pressure gauge and monitor it. You could be picking up crud from inside the tank and collecting it on the sock at the pick up. This will fuel starve the engine. Once you shut it off, the crud falls back to the bottom of the tank and it will run fine for a while. I went through the same pain on my '57 Chevy. I went through the ignition, carb, fuel pump, etc. Only fixed it when I had the tank cleaned.

 

[Ricko1966]

Do you have the charcoal cannister hooked up correctly it is the vent for your fuel tank.

 

[squaredeal91]

Definitely sounds like a fuel issue like sucking air maybe.

 

[gwandro]

How did this problem start?

I don’t know I was just drive down the road and it slowly started to die out one time and now it does it even worse

 

[gwandro]

Get a fuel pressure gauge and monitor it. You could be picking up crud from inside the tank and collecting it on the sock at the pick up. This will fuel starve the engine. Once you shut it off, the crud falls back to the bottom of the tank and it will run fine for a while. I went through the same pain on my '57 Chevy. I went through the ignition, carb, fuel pump, etc. Only fixed it when I had the tank cleaned.

Did you clean the tank or someone else? Researched and seen one about muriatic acid cleaning I think I’m going to try and I ordered a new sending unit

 

[legend57]

Did you clean the tank or someone else? Researched and seen one about muriatic acid cleaning I think I’m going to try and I ordered a new sending unit

I took the tank out and had it professionally cleaned and sealed. You could give it a try yourself. Just be careful with that acid.

 

[legend57]

I highly recommend adding a fuel pressure gauge inline. It'll be useful for debugging now, and in the future.

 

[Grit dog]

Do you have the charcoal cannister hooked up correctly it is the vent for your fuel tank.

IE does the gas cap whoosh if he opens it up after it dies?

 

[Grit dog]

Well OP ain’t come back. Sounds fuel related hard to play free internet mechanic when the person asking advice don’t provide info….anywho…
Sounds fuel related. Spark doesn’t generally “go away slowly.”
Drive truck. When it dies pump carb, check for fuel squirting. Accel pump won’t squirt if the carb is dry. Squirt fuel down carb, does it fire?
And if all those things you did provided zero change, likely good thing is you didn’t screw up any of those likely needed maintenance/repair items and can cross them off the list. Other good news is it’s something else.
Check tank and pickup. Run it off a fuel can if it doesn’t die, the problem is upstream of the fuel pump.