While chasing some oil leaks, I came across a copper line coming out of the top of the mechanical fuel pump (O-320-E2A in an RV4). It looks like the previous owner attempted a JBWeld fix that has since failed (looks like removing it is some work). It just runs into those blue fittings then out the bottom of the aircraft and vents near the breather hose.
Can somebody tell me what that is? Same diameter copper tubing that the old priming system used. He mentioned that had broken somewhere and they had capped it rather than fix it.
Can somebody tell me what that is? Same diameter copper tubing that the old priming system used. He mentioned that had broken somewhere and they had capped it rather than fix it.