Bad Mercruiser Fuel Pump - iboats Boating Forums
May 14, 2011 · Re: Bad Mercruiser Fuel Pump hay have same problem just decided to replace pump on 89 454 mercruiser original and thats when flooding problem started also bought mercruiser pump …
Mercruiser electric fuel pump issues - iboats Boating Forums
Aug 1, 2019 · No help but cheap peace of mind. Then I traced and replaced the oil pressure cutoff switch and primed the system by disconnecting the fuel line from the carb and putting suction on it …
Mercruiser Mag MPI Fuel Pressure Problem - iboats Boating Forums
Jan 11, 2009 · Re: Mercruiser Mag MPI Fuel Pressure Problem Injectors won't make the fuel pump pressure low, but you could have a problem with the pressure regulator. Perhaps the vacuum hose …
mercruiser 5.0 MPI fuel pump issue (s) - iboats Boating Forums
Jul 31, 2013 · Re: mercruiser 5.0 MPI fuel pump issue (s) Hi there, no there is no pressure switch that shuts off the electric fuel pumps, that is controlled by the ECM. Judging by your description, it sounds …
Mercruiser 5.0 MPI fuel problems - iboats Boating Forums
Jun 28, 2022 · Just some background, have a 2012 Bayliner with a 5.0 Mercruiser MPI sterndrive After the winter we tried to start the boat and it wouldn't crank over. Realized we didn't hear the fuel pump …
Mercruiser Mag MPI 350 Fuel Pump (s) Replacement
May 17, 2013 · This 100% eliminated any other issues other than the fuel pump. The mercruiser mag mpi 350 has 2 pumps. One in the fuel cooler (high pressure) and the priming pump (low pressure) at …
4.3L MerCruiser possible fuel problems!!! - iboats Boating Forums
Aug 17, 2007 · Re: 4.3L MerCruiser possible fuel problems!!! I installed a fuel pressure gauge right before the carb, just like the diagram in my shop manual. At idle, the pressure was around 2.3 psi. …
MerCruiser 3.0L fuel supply issue? - iboats Boating Forums
Jun 16, 2017 · Of course, my first thought was the fuel pump. But just out of curiosity, I disconnected the fuel feed/suction line that runs from the fuel pump to the tank, and I used a small screwdriver to …
496 Mag Fuel Pump | Boating Forum - iboats Boating Forums
Dec 9, 2008 · Re: 496 Mag Fuel Pump You should refer to Mercruiser service bulletin 2004-05 "Gen III Cool Fuel Module Diagnostics" But in my interpetation of that bulletin; 1)Running on an alternate fuel …
No power to fuel pump on 1994 4.3L V6 Mercruiser
Oct 3, 2008 · Re: No power to fuel pump on 1994 4.3L V6 Mercruiser OK - first, I tried the jumper across the oil pressure switch with no change in results. Second, I traced all the connections in the …