On my X2 the regulator on the top of the fuel pump assembly regulates the fuel pressure to the motor. Any residual fuel is emptied directly back down into the tank. The regulator assures that the motor only gets the pressure that it needs.
I have read all this post (Fuel Pump 101) and and a few others. I had my fuel pump act up this past Monday. I've got a 2005 TT 197. After reading the post I wrote down all the fuel pump part numbers and off to the parts store I went. While at the parts store looking at the fuel pumps the PSI output on all the pumps referenced in this post their output was anywhere from 80 to 95 PSI. From talking to a couple different Mastercraft mechanics they stated that this was to much pressure. I would to hear from other Mastercraft owners that have installed these pumps on their boats to see if installing a higher PSI pump has caused any other motor problems (blown o rings, put to much fuel into the cylinder and scorched the piston, etc.)? Thanks for the help!
Team MasterCraft Member
2005 X-2 MCX
Common sense is the least common of all the senses.