Been struggling with fumes in the cabin, but only when the windows are open. Checked the tank to canister vent line and it was clear. Recently installed Matt’s vent kit which and the vapor separator seem clear.
Hypothesis is the unrestricted vacuum is pulling hard enough to hold the rollover valve closed and not actually venting
Decided to make a small restrictor on the vacuum side to limit the vacuum “leak” that occurs when using the purge line direct to manifold.
View attachment 4171581
TBD on if this actually fixes anything. Open to other suggestions.