Went to change air filter and found it soaked with antifreeze.Is this a sign of a blown head gasket.Did a coolant bsystem pressure test and all was good.Thanks

 

no thats a good question if you did a test and it was good then

 

welcome to diesel bombers dj0443 and is your overflow tank anywhere close to your air filter housing man i dont know thats definetly something different there

 

Unhooked the air intake hose from engine.I have coolant in it to.

 

how was your coolant level when you checked it

 

the turbo cools itself with coolant, which is directly connected to the airbox and filter..maybe some sort of blowby-blowback from there?? I have seen this on modded jap 4bangers with after market turbo's

worth a look

let us know the outcome.

 

i thought it was to my understanding that the turbo was only cooled by the oil that runs through it?

 

I am in the midst of a FPR change and there is a coolant line that goes to the turbo.

 

saw a ford lightning at work that had the same thing. when going from high boost to none it creates a vaccum between that switch and caused oil to head back into his intercooler. dont know if this helped yall.