Mercury 2002 40HP 4 stroke fuel issue

fishingjack14

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Jun 25, 2014
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My Mercury seems to be starved for fuel. It will run perfect for awhile and then rpm's drop and it's lugging. I replaced fuel filter, fuel bulb and line from tank to motor.
I also tried running the engine using external fuel source (to rule out problem with existing fuel in tank). So far the best I can get is 4-5 minutes before the engine shuts down. Each time the fuel bulb is also collapsed, but the fuel filter reservoir remains full.

What am I missing?
 
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