NISSAN SENTRA CYLINDER HEAD

I Think The Head Gasket Needs To Be Replaced. How Much Do You Think It Would Run On This Type Of Car?

I Just Had A Blown Head Hasket Replaced, And The Cylinder Heads Rebuild. But Now Engine Lopes While Ideling.04 Sentra 1.8

I Have Been Driving With A Bad Ignition Wire For Months. It Started Overheating So I Took It For Repair. Mechanic Rep-laced Wire, But Said...