I swapped a EJ22T into my 86 Brat. Runs great however every once in a while (maybe when it's hot out?) she likes to leak fuel out of the evap line coming into the engine bay (expansion?). I tried capping it off and it just leaked out somewhere else in the engine. 

 

As of now I'm driving around with my gas cap off to depressurize the lines and it hasn't leaked since.. Not sure if that's the right solution so what did you guys do?

 

 

 

 

I've been looking for a vented gas cap for mine. I haven't had a problem besides how the tank pressurizes and scares some people when they open it at the gas station.

Best to find a way to vent the tank. When I did mine it pressurized the tank enough that it swelled and rubbed the axle creating a hole in the tank. I ended up drilling a very small hole in the gas cap to alleviate the problem.

Sounds like small hole in the cap is the answer. Thanks again gents!