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vacuum line question

whitey5150

New member
Joined
Jan 12, 2012
I have a b230ft swapped volvo 240 with lh2.4 it has a Garrett t25. the recirculation valve there is a little one way valve. My problem is that it holds vacuum all the time so the valve stays open so boost is crap. How is it supposed to function? I had to make a small hole in the vacuum line after the valve so it wouldn't hold vacuum under boost but that's not proper.

edit: it also stalls or stumbles if you go from boost to brakes, normally it doesnt stall but you boost hard and try to come to a complete stop immediately or like do a burnout and just stop it will stall.
 
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