Compression Ignition Addict
Join Date: Mar 2011
Location: wichita ks
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Remove the hose and see if the nipple on the tank looks like it's getting melted. If so this is more a sign the oil cooler is plugged,but could take out the EGR cooler soon. The best way to tell is to look at your EOT vs ECT delta. See the t-shooting guide in my sig for more info.
Q: Do I have a blown EGR cooler?
A: Remove the EGR valve and look down the hole, some times the truck will have to be parked nose down over night. If you see any wetness, wet gooey soot, or it looks steam cleaned, your EGR cooler is bad. This is a good time to do a delete if you can, if you can't I would recommend a new cooler from bullet proof diesel.
Q: The nipple melted off of my de-gass tank.
A: Your oil cooler is plugged up and starving the EGR cooler for coolant turning it into a steam generator. The superheated steam is going to the De-gass tank via the hose from the manifold that runs to the nipple that just melted off. You need a coolant flush, new oil cooler and an EGR delete.