Quote:
Originally Posted by autolodge
I am working on a 05 F550 6.0L that Is hard starting and puffing white smoke. I scanned it with a modis and it is kicking both EGR codes. Am I out of line to think it is the EGR cooler? The owner is convinced it is head gaskets but after searching this site, I am thinking of doing the oil cooler and egr cooler first. My gut says I am right but is there a good way to test for Head gaskets vs. EGR cooler?
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A friend of mine just went through this. His problem turned out to be a plugged oil cooler and bad EGR cooler. After all this was taken care of (at the tune of $2200), then and only then could they test for potential head gasket failure - turned out OK.
I understand you can do the test yourself with a kit from NAPA but I've never done it. It tests the coolant for exhaust gases - if it fails it's either the EGR cooler or heads or both. But you can't tell if it's the heads until you fix the EGR.
Do you have a coolant filter installed? If not, you probably have a plugged or partially plugged oil cooler, leading to the EGR flash boiling the coolant, causing puking and eventually EGR cooler failure.
Hope this helps.
Al
