A while back, i slightly overfilled my sump, easy to do if the dipstick is shot! The rubber section had hardened and bits fallen off, so i could only get an approxmate level when i topped up. As it happens it was only slightly over when the dipstick was replaced, had to order one from Citroen.
Also a while back, i gave it some stick on a dual carriageway up to the legal limit, but because the dipstick was no longer sealing and the level was a bit high, it blew some oil out, this ended up travelling along the underbonnet felt and dripped onto the pipes at the back, and onto the turbo, so i thought...
It was cleaned up and checked visually for leaks. Weeks have passed and its all been ok but a few days back i smelt the unmistakable smell of oil burning.
I looked again and saw this -
Oil 'apparantly' leaking from the oil feed pipe. I tried to nip it up with a 17mm but it was already very tight. Cleaned again with degreaser but yet again when i put my foot down it was leaking oil from somewhere.
I couldnt drive it any longer in case there was an issue, a shame as it looks great at the minute after a good clean yesterday, always happens!
This morning i got my spanners out, cut my arms up a bit but managed to get some boost pipes out the way, and luck seems to be on my side as i found the problem.
This is the connector piece between the turbo and alloy boost pipe that goes to the intercooler and then after that, to the throttle body. It has a metal insert in the centre to reinforce it.
It has seen better days -
Completely split at the bottom, so under high load and boost, was blowing out a little bit of oil onto the exhaust manifold and directly inline with the oil feed!
Heat and age must have got to it. It will have also been losing a little bit of boost, so its a shock to me considering how well it goes, been like it for a while.
Off to Citroen then, to order the bit. Hopefully its not NLA but i could replace it with some universal pipe if needed.
I was going to remove the turbo if the cause couldnt be found, and get it uprated. This will wait for now, a job for the winter.
The oil is just residual sitting in the pipes and it only takes a tiny amount to create a lot of mess and smoke! Oil feed moves slightly if you wiggle it but almost certain its not leaking, its rare for it to do so.[/url]
Good diagnosis!