What is a "REAL" boost leak test?

[Shane@DBPerformance]

The BISS and TB shaft are common leaks that often aren't worth fixing, since they are tiny and sometimes hard to fix. You should fix any leaks at the injectors, leaks there can be fixed and they can turn into large leaks quickly.

Are you using an air compressor? It should be able to maintain a decent boost level for a bit, unless it's a small tank.

[howslowcanyougo]

Originally Posted by ecoli

The BISS and TB shaft are common leaks that often aren't worth fixing, since they are tiny and sometimes hard to fix. You should fix any leaks at the injectors, leaks there can be fixed and they can turn into large leaks quickly.

Are you using an air compressor? It should be able to maintain a decent boost level for a bit, unless it's a small tank.

Yep I'm using a compressor. So should the "boost system" HOLD the pressure I'm putting in with the compressor on the Turbo inlet for like 30 seconds or not?

The car does spool ~3600, and hold 20lbs on the gauge to redline?

But I does seem a like fair amout of air is leaking out of the TB Shaft and Biss seals?

Guess I can start with the Injectors first?

Do I need to release the fuel pressure some how before removing the fuel rail to replace the seals? Do I need to buy new insulators as well as the seals?

Any links to a good tech articles or walk throughs for this n00b, who has never installed a fuelrail or injector seals?



TIA......