[Rene Lamothe]

So I bought this boat during the winter (3rd owner). During the water test the boat ran fine but at times (no pattern that I could figure out) would bog down and loose power while runnning at half to full throttle. It would always return to idle and when you hit it again it would pull very strong with no hesiation. I suspected dirt in the carbs so I pulled them and found that the small, internal filters had debris in them. In fact they were about 20% blocked. We cleaned the filters, reset the needle valve height (per the factory manual) as it was slightly high. Now the boat wont start. I can pour a small amount of fuel down the plug holes and it fires right up. I photographed the fuel/pulse lines prior to carb removal and believe I have them hooked up properly. There is really only one way as the hoses are almost preformed to their correct locations. Spark is good at the plugs and they are new. I did reuse the internal carb parts as they appeared to be in good condition with no tears, holes or other visible issues. I also applied pressure to the fuel pump diaphragm pulse inlet side and it holds 4 lbs pressure for longer than the 10 seconds the book calls for. I have not been able to test the pop off pressure for the needle as the pump I currently have will not get to 35 lbs.
I have noticed than if I turn the fuel valve to the reserve and/or "main" position no fuel flows from the fuel line. Is this normal?
What have I overlooked? Thanks in advance for the assist!

 

[YamaDoo]

Have you replaced the gray Tempo fuel lines that like to gum up inside?

 

[Rene Lamothe]

Yes all fuel lines have been replaced. The inside of the carbs were very clean with the exception if the screen filters as mentioned above. I also misspoke my self on the inlet pressure test. I tested the fuel pump diaphragm pulse side not the fuel inlet side. I have corrected/updated that in the org. posting.