Cat G 3516 C Fuel Issues

Hey guys, 


I have a Cat 3516 that is being used for power generation but we are having fuel issues where the unit lacks pressure... leading to lack of flow. Engine shut down. 


I have 89 PSI natural gas coming into the skid through a 2'' line... only 12 feet. At that point I have a 2'' regulator that drops the pressure to 3 PSI. This 3 PSI gas has to go 12 ft through a 2'' line to the engine. I'm thinking my regulator is too far away/my pipe is too small. 


Any one else have experience with this? 


Cheers, Jared