Truck Radiator Cooling System - Got Cooling Issues? Photo Gallery
Here's a radiator core that came into the shop whose owner complained of an overheating condition. The blocked tubes are easily visible on the right side of the core. Further inspection revealed a total blockage of approximately one-third of the radiator core due to foreign object debris. This particular core is a four row with 3/8-inch fins on 1/2-inch centers.