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On the track a few months ago I had a oil leak from the oil cooler hose fitting at the block below the aircon pump. It was dripping and being blown onto the front left brake and making quite a smoke screen. Not sure how the brakes were still working really well and I only knew back at the pits due to the smoke being visible when stopped.
Anyway, it only leaks on the track obviously as you are pushing it and oil temps go up and viscosity goes down. I wiped it up and drove home and it didn't leak a drop.
It does not leak a drop on the road.
I saw in the manual it says that the clips on the fitting should be replaced every time they are removed. I suspect this has never been done and that they have been reused.
If I replace these clips will the problem likely be solved, or are the fittings actually worn out?
Can they wear out?
What are my options?
What do you recommend to fix the leak?
Would be good to know before I rip off the PS and aircon to consider fixing the leak.
The fitting at the block is a banjo style with two crush washers. If it leaks, change the crush washers. If it's from the soft part of the hose, make sure there are no tears in it. If it's from the connection from the line to the oil cooler, you can order a new fitting for it, as the o ring that goes inside is NLA unless you get the next higher assembly. You can probably just pull out the old o ring from the fitting and find one the right size if you really want to be cheap.
Right, it has been a while since I went under the car and I realise/forgot it is not the banjo onto the block that is leaking but where the rubber pipe joins the solid pipe. I can't even see how this fitting holds the two different pipes together, but this is where the leak is.
Matt is this the part you mean I can order a new fitting for (or find a new o-ring for inside it)?
How does the joint come apart?
Leak location where rubber pipe joins to solid pipe
Out of luck, yet also in luck. That connection that you point to does not disconnect. The other end of the soft line does. I have one available that came with a dual oil cooler set up I bought, but never used.
If it does not disconnect, is it actually possible for it to leak from that point (if you know what the rubber to copper interface is actually like inside)?
I looked under the car again and after seeing your photo I realise the leak may be the joint at the end of your pipe pictured above which has one of those clips on it which the manual says always replace. (the track was so long ago i forget exactly which was leaking). It will always be hard to tell as at speed the entire area will have oil on it.
So were you meaning if it was this fitting I have added the arrow to in the drawing that I can either
1) buy a new fitting for this
2) be cheap and find an o-ring, as official factory o-ring is NLA (and I assume put a new clip on it also)?
Leak could be from either. Banjos at top (by PS pump), bottom (below aircon), and at oil filter itself appear to be ok. I recently did the copper washers on the top banjo.
Suspect joint - can you replace the fitting or do you have to pull it apart and replace the o-ring and the clip?
Clip to replace
Possible leak location at copper pipe to rubber pipe interface... if it can leak from here? (hard to get a photo)
If it is leaking from the copper to rubber interface place unfortunately your part won't help me on the other side of the world. Shipping cost would be prohibitive and they would damage it anyway.
That fitting where the clip goes is replaceable. It is also where the o ring is yes. Another s It for oil leaks is the pedestal where the oil filter mounts. There are two o rings under it that often get old and leak.
That fitting where the clip goes is replaceable. It is also where the o ring is yes. Another s It for oil leaks is the pedestal where the oil filter mounts. There are two o rings under it that often get old and leak.
Matt
Thanks for the valuable info. Which would your gut feeling be is leaking? The copper to rubber or the replaceable fitting?
Cheers
It's really hard to say without looking at it. Best thing to do is wipe everything down REALLY well and try and isolate where it's coming from for sure. The oil pedestal leak is FAR more common than an oil cooler line leak.
Would you say 14-7201 is the part which is in your photo? i.e. includes the pipe and the copper to rubber interface part?
I will see how much it goes for. I am expecting hundreds as for 14-850A is 50NZD alone. Might have to get a custom braided line made to go from the oil filter to the cooler.
There's also a sealing washer and oring on each oil cooler line. You can purchase the sealing washer but as I recall the o-ring isn't sold separately. You have to buy the oil hose end for about $35.
Just to close this out if anyone else searches in the future, in the end I took a punt and just replaced 14-850A, which was indeed the leaking component.
Then I found out my power steering rack was pissing out fluid which had added to the confusion. This was thanks to a previous owners pathetic boot install which caused water ingress causing it to rust and screw the seals. I also added an auto trans cooler for the power steering for the track
10-15-15, 07:46 PM
