well . . . it does leak oil BUT thats not what I am referring to.
Last night I mowed the lawn for the first time with the 'new to me' riding mower. At some point it started coughing, spitting running rough etc . . . and then it just died. I had plenty of gas.
It would briefly start back up and then die again. It would kind of run with the choke on.
Looked to make sure there wasn't an electrical issue and then noticed that if I moved the gas line I could change the amount of 'air' in the filter.
Then I undid the gas cap and a bunch of gas went through the filter . . . the gas cap had been on too tight and had created a vacuum.