Carb/Engine popping on light accel?

[PJNJ201]

Hey guys. So I recently picked up an 84 Regal with a 350 SBC in her. When its in park, if you tap the gas and rev it, there is a popping sound coming from seemingly the carbeurator, and it also does the same thing when driving. If you accelerate and tap the gas a bit, it starts popping and has stalled out several times. But if you slowly rev it up and THEN tap it, it does not do it. There is no knocking, tapping, or rattling anywhere and otherwise runs, shifts and idles fine. I'm thinking the carb is the issue. I planned on replacing it anyway with an edelbrock. A Holley is on there. The breather is dirty 😂Any thoughts? Thanks guys!

 

[fleming442]

Edelbrock, huh?
Why you wanna do that?
Usually, popping is the timing being too far retarded or the carb being too lean or both. Have you checked for vacuum leaks? Checked timing? Pulled a plug? Do you know how? Taking it to a mechanic?

 

[PJNJ201]

Edelbrock, huh?
Why you wanna do that?
Usually, popping is the timing being too far retarded or the carb being too lean or both. Have you checked for vacuum leaks? Checked timing? Pulled a plug? Do you know how? Taking it to a mechanic?

Yes, I know how to do all of that, but it's been below 20 degrees over here in Jersey for some time now and I havent had the chance to start doing all of that. However, I do have a mechanic who knows these cars who im going to take it to. Just wondering if anybody had a sinilar issue. Timing is what I suspected most. I am just hoping its not a cam issue 😳

 

[64nailhead]

Hey guys. So I recently picked up an 83 Regal with a 350 SBC in her.

I'd guess this an uinknown entity to you since you recently picked it up. I'd recommend starting with a compression test, and if all goes well there, then confirm TDC and set the timing to a safe number like 34 or 35 degrees all in (centrifugal + base). Replace plugs, wires, cap and rotor. Then, with the vacuum line to the dizzy unhooked and plugged, beginning fattenning up the carb. In a nutshell, tune the carb after you confirm the motor is in functional condition and have replaced all of the usual ignition component culprits of a misfire.

You can throw in to the fuel pressure as well. You'll be checking the vacuum once the carb tuning starts.

 

[fleming442]

I'd shoot some gum cutter/brakleen/etc around the vacuum lines, first. I think it's going lean from a leak.

 

[airboatgreg]

Sounds like a worn cam lobe to me

 

[64nailhead]

Sounds like a worn cam lobe to me

Sounds like too many guesses to me.

Confirm what’s good and what isn’t and let the chips fall where they may. Putting lipstick on a pig still leaves you with a pig 😉

Don’t throw good money on top of bad is my point.