low boost 5KQ

[Kneale Brownson]

At 06:01 PM 7/25/2004 -0700, Ti Kan wrote:
>david.vickers at us.army.mil writes:
>> I am new to the list. I just purchased a 1987 5000CS Quattro. It has a
>> Intended Acceleration Chip, 2Bennet Turbo and Intercooler, Koni
>> Coilovers. I have had the car for about one weak. It drove great with
>> 15psi of boost, and then suddenly it would not make over 5psi. The car
>> still runs great up until 5psi; then, it cuts out. This is my first
>> turbo. Any suggestions on where to start
>
>Probably air leak somewhere in the intake tract.  The first place
>I'd look is the "michelin man" hose between the throttle body and the
>intercooler.
>
And you want to do more than look.  The best test for a leaking MM hose is
to take it off and squeeze it between your palms so you can tell whether it
holds air.  They frequently crack inside the folds.  Aren't the ones on the
5k packaged with some metal coils around the outside?  Makes checking for
leaks even more difficult.  Other hoses can look perfect on top and have
holes in the bottoms.  So feel/squeeze all the hoses. Any that feel gummy
on the bottom may be leak sources too.