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EGR delete, ARPs, and Black Onyx gaskets....blown?
Ok, the truck has been running fine... quite well actually, since the IDP tunes. About a month ago, I smelled a little coolant smell... really faint, but couldn't pinpoint anything... so looking at my degas bottle (I didn't know about the updated sticker), it looked pretty much empty. Added 4 bottles of drinking water (was planning to flush anyways). That brought the level up to some kind of visible height.
Last two weeks. Ordered some RevX and installed. Next morning it was cool outside... something like 50 ish. Truck spit some blue haze out of the exhaust for about thirty seconds on the initial startup that morning.
Running up the highway a few nights later, I start pouring the throttle to it. I keep an eye on my EGTs and didn't run them past 1200 or so... then I get the flashing message center "HIGH TEMP". Sure enough, the gauge is dang near pegged. Back out of the throttle and coast about 500 yards and it starts cooling off. Stop a the only thing open and grab two gallons of 50/50 mix and dump it in. All of it. There's coolant sprayed everywhere underneath the hood all the way back to the bumper.
Change oil the next morning.
Flush coolant a day or two later... but the bottle keeps venting. No matter where we adjust the level, it just keeps venting. New cap and flush... still venting. Check with the closest dealership and the Master Tech says he's done so many gasket jobs that he's stopped counting. He's leaning towards gaskets due to the coolant system keeps building pressure and venting through the cap, but won't completely rule out the oil cooler. The high / low coolant level is where it's supposed to be but it keeps venting. I have no oil in the coolant, no coolant in the oil. Truck stays cool at idle 190 ish, but if you start feeding it some fuel on the highway, it'll rise up to 215-220.
I'm monitoring with a SCT TSX with EGT probe, but it's not set up for EOT. IT crapped out on me Monday. Regular temps that I did monitor on the highway showed no rise in ECT until you started working the throttle... then it comes up.
I hate to think that a truck with a MKM Customs Complete Powerstroke Solution with EGR Delete Kit just popped a head gasket. Everything was installed between 10-12,000 miles ago. I cannot verify at this time if the mechanic who installed it checked the heads or not as I wasn't the owner when it was done.
What I'm really hoping for is somene to say "I had the exact same thing happen and it was the oil cooler."
I work offshore for two weeks and run a welding shop when I'm home, so my time is really limited.
Any suggestions, questions, need for more details, etc... please chime in! I have not pressure tested the cooling system, and am unsure how to pressure test the cylinders at this time... I'm new to the PS still.
05 CC FX4
Leveling kit, 35/12.50/20 M/Ts on Rockstars
4" TBE, studs, EGR delete, Black Onyx gaskets
S&B, SCT TSX with custom tunes
Last edited by SevenBrooksWelding; 11-24-2010 at 07:40 AM.