Mr Adams also said the removal of water charges and property taxes were red line issues for any potential deal with another party going into government.
Speaking to RTÉ’s This Week programme, Mr Adams also heavily criticised the Government’s record in dealing with issues to do with the North.
He said he had not considered being Taoiseach after the next election. “I haven’t given it any thought …if that opportunity arises, we will look at that.”
An Ipsos MRBI opinion poll last month put Sinn Féin on 22%, making it the most popular party in the State, while a Red C poll last week gave it 21%.
Both Fianna Fáil and Fine Gael have ruled out going into coalition with Sinn Féin after the next election.
Mr Adams said his party would not go into government with others unless water and property charges were axed.
He said Irish Water should be changed but not abolished. “There needs to be a different mode of governance,” added Mr Adams.
He said Sinn Féin would not sell off AIB, as advocated by the Coalition, as this would remove hope of getting funds from Europe to pay for historic bank debt.
Mr Adams also said that he had spoken to gardaí about other sex abuse cases but did not specify which cases. He again dismissed a call by rape victim Mairia Cahill for his party to conduct an internal probe into allegations it covered up her abuse.
“It isn’t the business of Sinn Féin to have an internal investigation into any of these matters. That’s a matter for the PSNI, for the gardaí. I’ve appealed to anyone who has any information whatsoever to come forward with it.
“I have spoken to the gardaí. I have brought other issues, in terms of criminality and allegations of abuse, forward and talked to gardaí and with other agencies about these matters.”
Mr Adams criticised the Coalition’s record on the North. He said it was the “worst government” to stand up to the British as co-signatories to the Good Friday Agreement.