I have an 07 6.0 F-250 with about 130,000 miles on it. I have been having a lot of EGR
valve problems over the last 6 months. I have been getting more black smoke out of the exhaust when I start up and have had to clean the EGR
valve frequently to clear the problem. Last weekend I flushed the coolant system and replaced the coolant. This week I have been smelling coolant after the system warms up. The degas bottle is not overfilled, between max and min lines on the bottle, and I don't see any evidence of leakage. Coming home after dark the other night I noticed a lot of smoke? steam? if there were lights behind me and if the breeze was right I smell coolant. I only see a little white steam in the morning if it is light out. That tends to go away after the engine warms up.
In trying to determine if the problem is the EGR
cooler or a bigger problem with the head gaskets I tried BPDs bubble test, but no bubbles at all. I tried with the engine just warm and when it was hot, and at various rpms but no bubbles at all.
Oh, yeah i pulled the EGR
valve and this time it was kind of sticky and gooey instead of the harder dry coke that usually forms.
So here is what I am thinking, but wanted to get some other opinions from the rest of you. I am probably seeing the early stages of an EGR
cooler failure. So time to replace the oil cooler and EGR
cooler. I know it would be best to just do an EGR
delete but I live in an air compliance area and have to have it in so I just need to deal with it.
I am still worried about the head gaskets considering the mileage and the fact that it still have the factory head bolts in it. Do you think it is worthwhile upgrading the head bolts with ARP bolts at this point or is that ill advised?
Let me know what you guys all think. Thanks