bigdogdiesel
SDD Junior Member
- Joined
- Feb 13, 2007
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- 3
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ndsuperduty how goes the repairs or diag on the truck, i have seen and repaired several of these problems on the 6.0l thast is my full time job , as the lead diesel tech with a local ford dealership in ohio. the test can be done in your driveway but not with a standard coolant tester you will need to adapt the tester to go into the small degas hose from rad to degas bottle and pressurize system to 16 psi , the jack rear of truck up 2' and remove egr valve and let sit under pressure for 45 min to 1 hour, while looking in egr hole to see if coolant is present in manifold, if it is it is the egr cooler leaking if not release pressure and reinstall egr valve and leave tester in stalledbut doo not put pressure to system start the truck and drive under heavy load while watching pressure gauge if it does not level off at 18 psi , or climbs higher than 18 the head gaskets are blown. hope this helps, i do have a tool made to do this test easily if you need let me know i will tell you how to make it for under 80 dollars.