Hoping someone can guide me a bit here. I have a 1998 200 hp 2 stroke. Strong engine with about 300 hours. Recently it starves for fuel and dies. On checking it, I found that although the small fuel pump was pushing fuel to the VST, the boat would not fire. I removed the VST and found that it was dry. I have two questions.
1. Does this sound like the needle valve has gone bad?
2. How "robust" does the stream from the pulse pump need to be?
Testing the needle valve I blew through the input port on the VST. Found that it would not air pass most of the time with the VST in either the upright or inverted position. I did order a new needle valve.
And a follow on question. If I understand correctly, the high pressure positive input is always hot, the ground side goes to the ECU for grounding and the circuit is closed when the key is turned to the on position and the ECU ground to the pump is activated. Is this correct?
I ask because if I remove the two input wires to the pump, and connect to a multimeter, I get 12 volts whether the key is "on" or "off". Am I doing something wrong here?
Any guidance you could offer would be hugely appreciated as I am a little stumped at this point.
1. Does this sound like the needle valve has gone bad?
2. How "robust" does the stream from the pulse pump need to be?
Testing the needle valve I blew through the input port on the VST. Found that it would not air pass most of the time with the VST in either the upright or inverted position. I did order a new needle valve.
And a follow on question. If I understand correctly, the high pressure positive input is always hot, the ground side goes to the ECU for grounding and the circuit is closed when the key is turned to the on position and the ECU ground to the pump is activated. Is this correct?
I ask because if I remove the two input wires to the pump, and connect to a multimeter, I get 12 volts whether the key is "on" or "off". Am I doing something wrong here?
Any guidance you could offer would be hugely appreciated as I am a little stumped at this point.
