Hello all,

So I am the proud new owner of a 745 turbo. There is a never ending list of things which need to be done to it. Mainly because the previous owner was not real big on preventive maintenance or regular care, except for oil changes. It appears that the radiator is new and all the connections into it are new.

There is one pressure fitted hose on the passenger side at the top of the radiator under the fan switch (oil cooler I think?) which is leaking oil. I tightened the connection yesterday which I thought fixed it but the leak is still there. It appears to happen only when the car is revving or in motion. Also it seems like the brass metal piece connecting the hose into the radiator is leaking as well.

Any suggestions for fitting this together correctly? Am I missing an o-ring or is there some trick to doing this right?


Thanks Greg

 

Nobody has had this problem?

 

Where does this line lead? My turbo spit oil out in that direction because a plug was missing from compressor housing, but I doubt that's your problem.

 

OK so this first pic shows the line at the leak site, where it meets the radiator. It's the line under the fan switch.

The second is where the line goes, and some werid vac line on the turbo which I'm still trying to figure out.

 

thats the turbo's oil cooling/lubrication line, going to the oil cooler. important stuff. I think I'd drain the engine oil, open that connection, and clean it up and inspect it to figure out why its leaking. I'm not sure off hand if its a compression fitting, or has an o-ring or what.

fyi, the vacuum line to the turbo drives the wastegate regulator.

 

The oil is a light golden brown color and looks new.

1. Are you sure they are not ATF lines?
Kind of looks like there headed in that direction.
Some of the connections were loose so I tryed to snug everything gently.
Took it for a test drive and it looks like the leak has slowed or stopped.

2. Is that vac line connected correctly? The T has a screw in it.
That can't be right?

 

Hmm...I'm seeing transmission cooler lines for the automatic transmission, not oil cooler stuff. Probably were loose after the rad swap. Also, that vac hose on the turbo has been molested. Someone wanted to increase the boost level by using a "bleeder" valve. Just replace it w/ a single piece of hose and leave the T out.