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Can the AOS vent line cause vacuum leak?
Title says it all - trying to troubleshoot a vacuum leak in a '97. Newish AOS that is functioning fine (I know it is not the problem) could the AOS vent line that connects the top of the AOS to the intake / throttle body, if not properly sealed, cause a vacuum leak at low speed that would trigger a CEL? Could it happen due to an ill fitting o ring on the end of the vent line?
Thx-
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