Trying to find a book on the 92 Prelude. Car has a motor swap with a JDM H22a motor in it. Currently the car is idling pretty rough and sounds like it has a miss. Think I have a vacuum leak but don't have any diagrams to reference. Any recommendations?

 

Here is a vacuum diagram for reference. may slightly be different on h22a motor. Check all hoses for good connection and for any rips. THis might a take a while, but its a start. A vacuum leak can also occur from gasket rips/tears. Check intake manifold to cylinder head gasket.

 

www.hondahookup.com/manuals