I hear a lot of sucking noise coming from the carburetor on acceleration. The acceleration is poor.

It seems to idle OK. The timing and dwell settings are good. I don’t hear any vacuum leaks in any of the lines.

Before I open it up, could this be the accelerator pump not functioning properly?

Thanks,
Mark


1956 Chevy 3200, 1/2 Ton, 235 CI
https://photos.app.goo.gl/TQQo1YnFjs3U7xB57