Engine/Transmission (1998.5 - 2002) Oil seepage from intercooler hoses

[stacerbob]

Buddy of mine recently got a 98. 5 3500. It has an oily residue from the intercooler hoses. there is a little at the first one but more at the bottom where it goes into the intercooler(low point) What is wrong?

 

[Ncostello]

Does he have an oiled air filter (ie: K&N or AFE or other)? Seems as though folks can over oil them and can cause some oil fouling in the intake system especially on sensors. Or if its engine oil the turbo would be leaking internally and bypassing into the intake. That could lead to a run away engine where it runs on oil up to full throttle and cannot be shut down. I better let some real engine folks explain how that happens as I'm not a Holset expert.



But definately figure it out! Either situation is not good.

 

[stacerbob]

He did put a K&N in it about 1 week ago, has had truck for a month. This looks older than 1 week though???

 

[Larry Willard]

what about thepossibility that someone changed the oil and spilled the filter, then when wiping it off left the residue there?

Larry

 

[stacerbob]

That could be also I guess. He has his oil changed by a full service station. I will pull the hoses off and take a look.