fuel issue...need suggestions

[BLovett]

Syclone 1101 back on the road. Cranks and idles like a champ. Drove 220 miles to georgia from charlotte on breakin run with no issues. Started losing fuel pressure under 7 or more punds of boost and now losing it at only a couple of pounds. Everything in the system is new...pump, injectors, regulator. Walboro 255, turbotweak 60's. Volts are good. Only thing I can think is the brand new pump may be bad. Any other ideas?

 

[Beavis]

Re: fuel issue...need suggestions

Put your stock fuel pressure regulator back in and see what happens. If it works, the regulator is the problem, if not the fuel pump is the problem.

 

[BLovett]

Re: fuel issue...need suggestions

Yeah we did that so that's why I'm thinking it has to be the pump at this point. I went ahead and ordered an aeromotive 340 today. Hope I can get my money back on the walboro. I have the worst luck

 

[Don W.]

Re: fuel issue...need suggestions

I doubt it's the pump unless you ended up with a chinese knockoff. The little hose in the tank connecting the pump to the line? If you can squeeze the return line and watch fuel pressure, see if it holds.