My RRS doesnt get a lot of use these days but has been going along nicely when needed until my wife had to use it on a 40 C degree day a week or 2 ago. The Dreaded Restricted Performance triangle came up and she couldnt get more than 70 kph out of it.
She got to where she needed to go to drop off a car full of stuff for a friend and then drove home with no issues at all...
I went to put the car out the back (where it lives mostly) and boom, restrcited performance under light load but wouldnt rev.
I opened the window while I took it around the back (via a back road) and there was a definite whistle, like a Turbo whistle when you let off the throttle.
Today I had the chance to clear the codes with my GAP tool (didnt screen shot them doh) and then give her a quick run... nothing untoward.
Having a look under the bonnet my first thought was to look for tell tale oil leaks along the inlet manifolds... dry as a chip, a bit dusty but no oil leaks....there.
I did find a leak on what looks to be either a pressure line or a vacuum line connection at the inlet connection. Pictures attached to show the spot.
The connection it plugs into is pretty hard and the O ring on the connection seems to be hard as well... does anyone know what this line does and could this be the culprit?