merc 150 2strk fuel pressure

[ajuscg]

Our Mercury 150 otb loses fuel pressure after 4000 rpm, under a load. any quick suggestions on a probable problem .

 

[andy6374]

Re: merc 150 2strk fuel pressure

Try squeezing the primer bulb while this happens, if this saves the engine from falling on its face then it's time for a fuel pump rebuild.

How do you know it loses fuel pressure? Did you hookup a gauge?