Join Date: Jan 2006
Location: central coast, california
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Why EGT's are so crucial.
im sure this will stirr up some of the "anti dealer" people....but this is a prime example as to what EGT's can do to a motor. I got a repair order for a 05 excursion with a 6.0 today for a rattling noise from the motor. i pulled it in, the rattle was terrible, and the EDGE tuner screen was reading 0 PSI of boost at all times, so i already had an idea of what i was looking at. after about 30 seconds of running, the motor started blowing white smoke, which i assumed was entierly unburnt fuel. i stepped out of the truck and got a wiff of the smoke, and it wasnt fuel, it was obviously the sweet smell that airborn coolant has. upon inspection, i found the turbo had been completely siezed which caused the shaft and bushing in between the exhaust and intake side to break. i split the turbo in half at the clamp and the exhaust side turbine just fell into my hand.
Now to the truck, the owner has a very expencive, four corner air lift on it. it has an edge attitude with some other piggyback programmer.......AFE air filter with automatic retracable door steps, a four inch downpipe with a five inch exaust after the downpipe. the truck has 14600 miles roughly. the guy obviously has money and no common sence......
It is very obvious that this turbo was melted down due to high EGT's, and when i brought that up to the service manager, the customer came down to argue. you all know me well, i VERY rarely blow the wistle on guys with mods, unless it is blatent and just plain abuse, which this obviously is. i explained the meltdown of the turbo to the customer and his comment was "I know for a fact those EGT's never got over 1800........OMG.....no wonder that turbo was toast......
to make it all beter, i drained the oil and pulled the oil filter after i spit the turbo and found oil in the exhaust side. i found out that the oil and filter looked like a christmas tree if i shined my flashlight into it. there was a TON of metal flakes and this motor is not long for this world......
so for those of you that dont thing EGT's are a big deal....this guy is looking at a 12-15,000 dollar repair because he didnt.........Marc