To do this fully it should be removed & taken to a radiator repairer, as just back flushing with a hose will not dislodge blocked cores, you will still get flow through the radiator, but at a reduced rate and over heating will continue if this was your problem.
mark (mhpautos)
Jun 8, 2009 at 7:48 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.