I have a 99 5.9 I have oil leaking out the breather hose. I know most of these trucks leak a little bit but mine will leave a puddle every now and then, but it only dose it when I am pulling a load or running it hard pulling a lot of boost dose not seem to do it with normal day to day driving. I rebuilt the vacuum pump over the summer because it was leaking and I have checked all the vacuum line. I really and stumped anybody got any ideas.
I have a 99 5.9 I have oil leaking out the breather hose. I know most of these trucks leak a little bit but mine will leave a puddle every now and then, but it only dose it when I am pulling a load or running it hard pulling a lot of boost dose not seem to do it with normal day to day driving. I rebuilt the vacuum pump over the summer because it was leaking and I have checked all the vacuum line. I really and stumped anybody got any ideas.