Need help identifying where oil is coming from

[lmholmes11]

Hello all,

Truck is a 2007 LBZ. 61K miles. The first picture is of the turbo inlet, looks like an oil residue is forming on top of the boot and connection. Is this normal? I know that if oil is forming on top of the boot that the same oil residue is going into the turbo, which isnt cool.

Next is my bigger concern. It is the pipe that goes from the turbo to the air to air in front of the radiator. There is quite a bit of oil on top of it, (as seen in the picture). It looks like the connection right above the pipe might be dripping down onto the pipe. Im not positive what it is though, maybe a tranny line? Thanks guys.


On another note, can I remove the fan guard (not the shroud) and leave it off in case I loose the serp belt along side the road, so I dont have to take it off then? It looks like it would make changing the belt a PITA.

[Mark Rinker]

Normal, normal and normal.

Do you run an EGR blockoff plate or any other mods?

[DmaxMaverick]

Some oil residue in the intake plumbing is normal. It's a result of the closed circuit crankcase vent (PCV).

The 3rd pic looks like a power steering line leak. This is not uncommon, and doesn't pose an immediate problem, unless it's significant or causing other issues (like dripping onto exhaust components). Degrease it and watch for the source.

[lmholmes11]

Thanks for both of your replies. I will clean off and watch for more leakage. And Mark, no I am not running a blocker plate, I am eventually going to send my ECM in to John and have the basic tune done so my egr will be shut off completely. I figured this is a better route to go rather than just a blocker.

[lb7lbz]

i also want to know can the fan gaurd be removed cause it does make changing the belt a pita