RX7 Turbo 1990 cranks ok but does not start

[miguel_rx7]

My rx7 1990 Turbo stopped running one day after warm up and is dead since then. I have checked the compression, the electric system and all seems to be OK. No error code from ECU. When checked the fuel system found no fuel pressure because fuel pump was not working. I replaced the pump but still did not start. Pressure was under specs then decided to cleaned up the injector with no luck. Now the hold fuel pressure test fails. Pressure drops to 0 psi in seconds after cranking. What could be the problem? Is it the fuel pressure regulator? Please help.

[campingfoool]

Replaced filter and fuel pump. The voltage to the pump is .08 VDC when I try to start it. Don't know if this is correct or what. Could there be a bad relay or fuse. If so where do I look?

[miguel_rx7]

I installed a $15 gauge after the filter to make sure there is pressure from pump. Meanwhile check the link below.

http://www.rotaryheads.com/PDF/2nd_gen/Mazda%20Service%20Manuals/1989-91%20Factory%20Service%20Manual/04b_fuel_and_emission_control_systems_turbo.pdf