Hi,I finally got the filters from the dealer and installed them. I cleaned the final filter in the VST and the filter in the pressure regulator. Engine starts but still does not keep running. I did a flow test on the electric lift pump and pulse pump. The high pressure electric pump in the VST is running and stays running during the entire start-up and run time (between 1 to 5 seconds).The engine sounds fine when it is idling. I did a pressure test with a gauge attached to the test port on the VST. The pressure comes up to 35 psi and stays there while the engine runs and then drops of and the engine dies. A strange thing happened during my first pressure test. I attached the fitting and hose of the pressure gauge to the test port and started the engine, the engine idled beautifully for about three minutes and did not die with the pressure remaining at 35 psi, luckily I looked down in time to see fuel leaking from the test port into the bilge and running over the two electric connections for the high pressure pump in the VST. No fire or explosion thank God! I cleaned up the leaked fuel and tightened the fitting on the test port and ran another fuel pressure test on the engine. The engine starts and pressure is at 35 psi, I ran flow downstream of the gauge into a pail, the engine ran for five seconds then the pressure dropped and the engine died. Another interesting thing I noted is after the engine dies I check at the test port on the VST for pressure and I am thinking from my reading in the service manual that there should be pressure in the system (they tell you to hold a cloth over the test port when you are relieving the fuel system pressure prior to taking any lines off) I have no pressure at the test port. Is there a check valve malfunction in the pulse pump? or is the pressure regulator failing? Any way I am hoping to hear from Richard Hartman or some other jet boating wizard. Thanks for your reply and interest in my problem.
Best regards
Terry
copperhead
Member Since 01 Jun 2010Offline Last Active Sep 01 2010 10:45 PM