Portland Mayor Sam Adams defaulted on a home loan in August, marking the third time in 14 months he has fallen behind on a mortgage. Adams went four months without making the $2,413 payment on a rental triplex property in North Portland’s Kenton neighborhood, according to a default notice filed with Multnomah County by his lender Aug. 18. The notice is the first step in a foreclosure. Six days later, the lender withdrew the foreclosure, saying Adams had resolved the default. Adams declined to comment Wednesday except to say by text message that the “bank confirmed I am not on the list.”