I have standing water in my sewer vent. When the toilet flushes in girggles and never swirls to take in all down. I have tried running a snake down the vent all the way to the main sewer line, and had no success. What other options do I have?

tried running a snake down the vent all the way to the main sewer line, and had no success.You didn't put out enough snake. Put out enough snake to breach the base and 16 feet more. Let me know how you make out. Good luck, Tom

You didn't put out enough snake. Put out enough snake to breach the base and 16 feet more. Let me know how you make out. Good luck, Tom

Pulled out 50' foot of snake. Enough to reach the main sewer line. Any thing else that could be clogging the vent?