Excursion 4WD V8-6.0L DSL Turbo VIN P (2004)
b. Install block off adapters using standard screws and washers. (Figure 1)
c. Install shop air adapter and regulator and pressurize cooler to 30 psi (207 kPa). Listen for leaks.
NOTE
FOR VERY SMALL LEAKS, IT MAY BE REQUIRED THAT EGR COOLER REMAIN SUBMERGED FOR UP TO 15 MINUTES TO AID IN
LEAK IDENTIFICATION. THIS TIME IS NEEDED TO ALLOW SMALL LEAKS TO DISPLACE ENOUGH WATER FROM THE COOLANT
PASSAGES TO BECOME EVIDENT.
d. Submerge the EGR cooler horizontally in the water, with the coolant ports pointing upward. Manipulate the cooler under water to purge all
trapped air from the internal coolant passages. (Figure 2)
e. Inspect for continuous bubbles escaping from the coolant ports.
(1) If continuous bubbles identify a leak, replace the EGR cooler. Proceed to Step 3.
(2) If bubbles do not identify a leak, do not replace the EGR Cooler. Install and proceed to Step 3.
3. Flush cooling and heater system together using the latest service procedure. Refer to other applicable articles.
