palauoriginal Posted June 18, 2016 Share Posted June 18, 2016 (edited) Hello all, I recently did an l28et swap in my 1975 280z. It is stock aside from an msa downpipe, megasquirt, aeromotive fpr, and a walbro 255 fuel pump. I got everything running but my fuel pump is extremely loud and according to my fuel press. gauge it surges from 40 to 20 psi at idle once it heats up. When I drive it, (which i shouldn't) fuel pressure gets down to 0 until i let up and comes back to 40psi. Now this is on maybe 4 gal. of gas. See Vid: https://youtu.be/papZzY5_VRY I'm just wondering if I should get a new pump or if should reconfigure my fuel pump inlet from the tank. (maybe more gas!! ) Any feedback is appreciated. Thank you! Edited June 18, 2016 by palauoriginal Quote Link to comment Share on other sites More sharing options...
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