Quote Originally Posted by mudnut View Post
Have you checked the voltages present at idle and above 1500 rpm? What is the resistance of the coil?. After confirming that there is no voltage at idle, I would remove the solenoid and check to see if it is seating /sealing properly. Does it click in and out when given a 12 volt feed? Follow the procedure in the manual to release the fuel pressure before removing the solenoid.
I didn't check the voltage, but I tested it following the way you outlined in the RB30 thread by checking the fuel flow from the Fuel Return Valve when revving the engine. When I rev the engine, Fuel Return Valve clicks & pretty much blocks the fuel flow on fuel return line. So, I thought it was working the way it suppose to(allowing less fuel to return to the tank).
I'll check the voltage at 1500 rpm and above & resistance & other tests you mentioned above, shortly.