regorih

Hey guys,

I'm upgrading the fuel system with an aeromotive 340 pump and a return line on my C6 that has a procharger. I dropped the fuel tank out and replaced the stock fuel pump with a aeromotive 340 pump but before I re-installed the tank I'm testing the new fuel pump and sending unit to make sure it all works right.

I followed the youtube vids on how to test the fuel system but no luck yet. Any advice would be appreciated in diagnosing the fuel system.


I made a temporary gig to test the sending unit outside of the fuel tank. Basically cut a jug and dropped the sending unit and filled it with gas and attached the two lines that are used to send gas to the passenger side tank and recirculate the gas back to the driver side tank.

I'm using a jump wire at the fuel pump relay to turn the pump on which it does, I'm using high-pressure submersible fuel line, and I plugged the top line that sends gas to the driver side tank.

From what I have read, I need to plug the top line which then pressurizes the stock fuel pressure regulator and then sends gas to the front of the car.






I have no idea what this line does but it was attached to the stock fuel pump which you can see the nipple it was attached to in the lower picture. The Aeromotive pump did not have the nipple

speedz06

Looks like allot of work to diy. I may need to do the same. How long did it take you?