R33 Low Boost

[twin_disc]

My R33 GTS25T won't boost up properly.

At idle the vacuum is higher the normal and when i try and boost up it will only boost till 5psi. (Won't go into second stage boost)

I tested the solinoid that operates the 2nd stage boost but it is working alright.

I tryed constantly earthing the wire that operates it but still nothing.

Does anyone have any suggestiuons whats wrong

[evil_weevil]

checked all the hoses,connections etc?

any leaks?

[twin_disc]

Yup ive had checked all the hoses off the intake manifold

[Cjmartz2k]

Vacum leak. Check again.

[Ultimategtr]

i second taht. happened to me once.. at idle, th gauge would read at eg -20 rather then -30 or so.. check the gauge hose that hooks up to the T piece off the plenum, was split!

its def a split hose/leak somewhere. u might hear a hiss at idle too.

[twin_disc]

Sweet Fixed it.

Turns out the hose to my after market boost gauge had a small crack in it. i checked this by blocking off the t intersection to it. so i bought a new piece of hose today and its all sweet again.

Thanx for the help guys i appreciate it.