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crank case ventilation hose.

845 Views 8 Replies 3 Participants Last post by  raider89
What kind of issues would I run into if I don't have one?

Mine broke off and it has nothing there atm

1.8t aeb
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Assuming you mean the big one under the intake manifold, you'll have some oil spatter out the hole, and the mixture will be off - may idle poorly, stumble, burn excessive fuel, etc.
Would it cause boost leak
A boost leak, per se, I don't think so. But I never left a big hole in my PCV system deliberately, so I can't say the exact consequences.
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