Quote:
Originally Posted by ArcaicAeronaut
Okay , here is an update I have checked the FD upper outlets to find they are dry. I've tried jumpering the 7-8 to get the fuel pumps to run continously. When pressing down the airflow plate thete is still no sign of fuel (ether a chirp or sound or smell of fuel). There is good fuel pressure to the bottom of the FD ( by loosening the return line I get good spray and flow). Same on pressure measuring port. When I break the cap on the cold start injector there is good fuel pressure and fuel, however it is obvious that that is far as the fuel is getting. That injector is not opening either. I have tried loosening the upper FD lines (several at a time) and using either the 7-8 cross jumpered for fuel pump running and also with the fuel relay reinstalled to crank over the engine. All the upper fittings remain dry.
These are all the same indications I had before rebilding the Fuel Distributor (FD). What can I check next?
And I told my dad this would be an easy fix  Help
Jeff
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It may be time to suspect the fuel pressure regulator. A certain minimum fuel pressure is required to open the diaphragm valves in the FD, irrespective of the position of the sensor plate and metering plunger.
Cracking the fuel supply and return fittings may produce what appears to be good pressure, however, absent measurement of pressures, that is not definitive.