sneaky boost leak

SCobsessed

Registered User
I presently have a boost leak in my 89 sc. Thing is I have looked and looked, I've pressurised the system with compressed air and checked for leaks with soapy water and i have made sure everything is tight that i can see. But my car still pulls a vacume of about 18 and just barely makes it up to 10 pounds of boost by redline. I know its leaking by the way it runs. Anyone have any ideas, The only thing i havent done yet it pulled out the vacume tree and looked to see if its cracked or something, im also going to go through it again with the compressed air and soapy water. And yes i checked the Pressure controll valve on the supercharger and it opens with the throttle fine sofar as i can see.
thankyou in advance for any help.
 
Did you check the cruise control stuff, starting at the brake peddle and working your way to the servo under the drivers fender? This is often overlooked because you would think that it would have nothing to do with the engine. Good luck
 
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