Boost Problem

[David Costello]

guys I'm having a little difficulty with my pulsar turbo, sorry if it's a bit off topic I just had a feeling someone on here might have a clue what's going on.   Ok I was cruising around and the car was boosting as per usual (18psi) then I went to boot it and it dropped off slowly down to 10psi, now it just will not go up past 10psi, no matter how far I wind the boost controller out. My first guesses were either the wastegate was sticking open or the boost controller was faulty.  I pulled the wastegate hose off all together and the car still wouldn't boost over 10psi.  I thought ah well it's the wastegate flap must be sticking, but when I popped the bonnet the turbo was glowing red.  This would indicate the turbo is working over time to achieve this small amount of boost, if the wastegate flap was sticking open that wouldn't happen the turbo wouldn't be working hard at all cause gasses would be just flowing freely through the flap.  So the only thing left (or so I thought) was a boost leak.  The turbo was glowing so red because it was actually blowing a hell of a lot more boost than that, but the rest was leaking.  So I pulled all my intake piping off and checked all the welds for cracks, not a crack to be seen.  They're extremely neat and well done tig welds. So I got the intercooler pressure tested, no leaks there either.......so I'm completely stumped   can anyone offer any suggestions as to what else I can check?   Dave --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ ---------------------------------------------------------------------