ok here goes my fuel pressure at idle is 11psi and at 2000rpm its about 28psi so i changed fuel filter no help and then i cleaned pre filter screen still the same thought i might have air in my gauge line its a ispro so i unhooked and took the gauge out and ran it in the engine manually (without the isolator) still they same i guess may next step is a lift pump is there a way to test lift pump and what is the better lift pump to get thx ahead of times guys this is the best forum!! Mahalo