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Boost leaks...


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Well for the past week I've noticed that my car has only been boosting to .7 bar. Didn't seem normal to me so I built a gizmo that I could plug into the intake tract where the airbox would normally connect to, pressurize the track and listen and look for leaks.

So Right off I hear a hissing sound comming from the right side of the engine so I start feeling around and then start spraying soapy water around and I can't find it. So I happen to rest my hand on the oil filler cap and the sound got muffled. So I tried to tighen the oil filler cap and it was alread as tight as it would go and still leaking. So I barely started to back it off and it sealed and stopped hissing.

Then I sprayed water over all of the hoses and lines on top where the DV's are and I started to see bubbles comming from a small hose that connects to a square block. The hose is clamped on with some type of wierd clamp and it looks to be leaking from around the clamp. The hose and block are behind and above where the oil filter is and it runs front to back, not sure what it is but I have pictures that I'll post later. That one I couldn't fix, to hard to get to without removing a lot of stuff.

So then I crawled under the car and could hear more hissing comming from the rear driver side. Turned out to be the intake hose going into the turbo, so I tighted all the hose clamps and it stopped.

Took the car back out and now it's boosting consistantly at .9 bar (stock unprogrammed ecu)

So, if anyone has an X50 that's been boosting in the .7 range (Ive read posts from guys asking if that was normal) you may ought to check for boost leaks, it's not normal.

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