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115ELPT4S 2006 115 mercury serial 1B391413

fleury

New member
my outboard runs well for a few minutes then the fuel rail pressure drops off and the engine stalls , the lift pump works fine and the fuel rail pump runs to 42 lbs no load , a bit before it stalls you can see air and fuel going back to the main tank this is viewed thru a clear hose, it eventually lowers the fuel so the high pressure pump cant keep the fuel rail supplied and the lift pump won't kick in to refill the fuel module . how can air pressure get into the module to push the fuel backwards in the supply line????
 
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