Re: Perkins 4-108 Fuel Injector Pump Leak
Sounds like the injector pump needs an overhaul.
Pull it out (following the instructions in the Service Manual to the letter) and take it to your nearest fuel injection specialist.
From RFC 1925: "(3) With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead."