Citroen Jumpy 2.0HDI 88kw, no boost

[artursst]

Hi.
Need some help.
My Citroen Jumpy has no boost.
See the pictures attached to understand better.1st picture there are 3 pipes connected via splitter and 2nd picture spliter is off and turpo pipe is connected directly to vacuum pump.
So there is no boost,Unless I connect the vacuum pipe directly to vacuum pump instead of splitter.
Its a 3-way splitter ,one way goes to brakes,one is blanked pipe(don't know why) and one goes to turbo solenoid
SO if I take splitter off(Disconect brakes) and leave turbo pipe only,boost is perfect,car goes like a rocket and diagnostics shows perfect boost,as requested.A soon I connect it back via splitter-no boost,it stays around 1000,even drops at beginning to around 900 and the slowly goes to around 1000.
Brakes work perfectly. And turbo works perfectly when connected directly,So I don't think there is any leak in vacuum pipes.
Can the problem be the vacuum pump itself?Maybe vacuum is too low to supply both,the brakes and turbo?
Sorry,if I explained it uncleary,Im trying my best.

[artursst]

Fixed.
Checked the system wiith vacuum gun and found small leak on pipe that goes from reservoir to turbo solenoid.
So it was leaking pipe.

[PaulC5]

Well done, if only all faults could be so easily fixed.