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					Originally Posted by  RX-Heven
					 
				 
				Mind putting up a simple labeled diagram of your fuel system? 
			
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 I will try to explain the best I can. 
2 feeds 1 return 
1  -8 AN feed from  the prime pump  ( in tank 044) to the FPR with a non return check valve after the pump.
1 -10 feed to the mechanical fuel pump with a check valve before the pump.
1 -10 return from the FPR
The prime pump is on a ON OFF switch, once the car is started there is enough vacuum /gas draw on the mechanical pump to shut off the prime pump. At the same time if the belt on the mechanical pump breaks I will have some what fuel pressure from the prime pump to make it home/off the track/ in to the trailer.
I hope it makes sense. if not I will be more than happy to respond to any ?? you / someone ales might have.
Thanks