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2005 Mercury has surging problem. #8098146 10/11/12 12:59 AM
Joined: Jun 2006
Posts: 191
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Chief Mike Offline OP
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Joined: Jun 2006
Posts: 191
I have a 2005 Mercury 90 h.p. saltwater series motor. After a short period of time running the motor, if I try to run between 5000 - 6000 rpm the motor starts to surge like it starving for fuel. If I lower the rpm to about 4000 to 4500 rpm she seems to run ok. it is a little hard to start sometimes. My boat has been sitting for several months with fuel in the tank. I use Stabil. Does anyone have any ideas on what it might be?


"It is a terrible thing to see and have no vision"
Re: 2005 Mercury has surging problem. [Re: Chief Mike] #8098311 10/11/12 01:39 AM
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Matt M Offline
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Check your fuel line if its grey w/red writing and is feeling a littl e like bubble gum the inner liner may have broke down and causing a fuel restriction. Other than that start with your basics, spark,compression.

Carb job is a possibility


Matts Marine Service
903-450-3539
Re: 2005 Mercury has surging problem. [Re: Matt M] #8102093 10/12/12 12:01 AM
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Grand Lizard Offline
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Spark plugs are probably fouled.

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