6-71t one 43hatt oil leak around turbo blanket

[garyd]

Have a slip mate that has a 43 hatt. He is retired and asked I look it over for him. We looked it over and everything looks good except the battery boxes. Looks like they are giving up the ghost.

And also he had oil on the exhaust elbow just after the turbo itself and it also looked like it was dripping out of the blanket. I said if I was him I would not run it again until someone looked at it. He asked if there was some sort of seal that could fail under the blanket. I said I don't know on those engines, but knew of a group of guys that might know.

garyd

 

[Avenger]

There's no seal under there in the sense that he's thinking of. Either the turbine shaft oil seal has failed or he's "wet stacking". In either case the blanket must come off and the cause needs to be determined.

Have you run this boat? Does he get a lot of white smoke or a sheen on the water? There are no gaskets where the exhaust housing components mate, nor do there need to be. So the "leak" is oil or fuel and carbon that doesn't belong there getting past the joints. Chances are he'll be pulling the turbo. If the connection to the manifold is dry the turbo is NG. If it's wet it's probably an engine problem. Timing, compression or injectors. Hope this helps.

 

[Will]

Could the source of the leak be one of he oil lines to the turbo? I had one leak once. Regardless, he needs to get rid of the oil soaked blanket. It's a fire hazard.
Will

 

[REBrueckner]

Remove the oil soaked blanket; as noted it's a fire hazard. Run the engine at fast idle and see if you see an oil leak from the lube supply line to the top of the turbo...or anywhere else...if nothing is observed, take it out for a run and again inspect it under load at higher rpm.