Reply With Quotesounds like it is sucking air into the line....had that happen before....check all hoses and the pump bulb for pinholes and small cracks....
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Keeper
90hr merc 04
I have a 90 hr merc that runns just fine at slow speed, but when you get on it, it will run like crap. the motor is up and down not a even run. if i have someone in the boat to pump the ball it will get up and go, so I know that it is not getting enough gas. I have done a few things but nothing works. thanks to anyone that can help.
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sounds like it is sucking air into the line....had that happen before....check all hoses and the pump bulb for pinholes and small cracks....
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If your fuel lines are good rebuild the fuel pump.
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Bill H. PTC USN Ret
Chesapeake, Va
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a good bulb not from walmart and diaphram kit ure good to go
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Yeah, those bulbs from Walmart is a waste of money.Originally Posted by boatman44
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Bill H. PTC USN Ret
Chesapeake, Va
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Agreed on replacing the fuel lines and priming bulb first with quality components. A dry rotted fuel line plagued me this summer and was creating a small air leak and I could till barely see the crack with the line removed. Still having to manually pump the bulb to get it to run smooth at mid-full throttle? Fuel pump.
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thanks for all the advice I have put new hoses on I will try the fuel pump any more ideas would be great
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