axnjaksn

iTrader: (2)

Finished puttin the engine back together, hooked everything back up correctly or so I thought, and when I drive I get no boost, get off the gas, then back on and magically boost but only 5 or 6 lbs????? what am i doin?:??

Rx72Heaven

iTrader: (2)

im no expert but it sounds like its the Vacume Chamber. its not getting complete pressure so it wont actuate the boost. May need a new one, they are plastic so easy enough to crack.

dgeesaman

iTrader: (7)

Leak coming off the vacuum chamber. The check valve is the most common reason. I'd start by replacing all the check valves - you can get enough viton diaphragm ones to do the car for $25.