Problems while testing for boost leak, help!

[Jonas_R]

Well,

I got the bong set from lee and i stuck the bong in the maf hose, one to block of by the throttle body and one where the PVC system enters the Maf hose.

But when i applied pressure, it cant even hold 1 bar of pressure. It is leaking like hell, strangely enough since i can drive and get 1.3 bar off boost. But is there some where i should block off cuz it seems the air just escapes?

/Jonas R.

[dkw_dude]

Leaking wastegate stem? (a little leak here is ok AFAIK) Try blocking the 8mm hose to the WG.

[Jonas_R]

Dont think so, but will have to take the front bumper off and try to see if i can hear where air is escaping.

Just seems stupid if i need to block something else off

/Jonas R.

[4WheelDrifter]

The system won't hold any pressure if you have a leak. If you have a large leak the air escapes almost as fast as you pump it in, BTDT.

[S2central.net]

Jonas - you *must* block the 8mm hose where it enters the wastegate when pressure testing. Otherwise, air pressurising in the turbo-output hose routes thru the WGFV (in its off postion) to the wastegate (WG).

The WG cannot hold boost indefinitely like that. Block that hose - I find a 1/4 inch socket extension bar (or a screwdriver) works great !

Paul

[Jonas_R]

Thank you Paul, will give that a go

/Jonas R.