I HAVE 95 MAZ PRO AND IT SUDDENLY DIED AND NOW NO START SPINS BUT FILLS THE CYLINDER WITH LOTS OF GAS, I CHECKED THE FUEL PRESSURE AND IT IS 35 PSI AND DOES NOT HOLD PRESSURE. AS SOON AS U STOP THE FUEL PUMP THE PRESSURE GOES DOWN VERY QUICKLY. GOOD FIRE BUT NO START JUST FLOODS THE ENGINE. PRESSURE REGULATOR!!!!

 

Check the vacuum line off of the fuel pressure regualator onecoolmazda. Sounds like the diaphram is ruptured and is drawing fuel directly into the intake manifold. Just pull off the vac line with pump running and see if fuel comes out.