View Full Version : 1999 205 prostar LTR fuel psi

05-31-2013, 10:51 PM
Help! I replaced fuel pump . Psi still at 24 psi at psi port. This is a non return system. Does anyone know the correct psi I should have?

06-01-2013, 07:07 AM
According to Indmar, the pressure on all 96 and up TBIs should be 30 psi normal and range from 27-33 between idle to WOT.

06-01-2013, 09:15 AM
LTR is multiport injection. Not sure if the fuel pressure numbers are the same as the Indmar TBI.

06-01-2013, 10:02 AM
Here is the fuel pressures for the Indmar motors from the Indmar website.

Guess I didn't look at the other line.

Port Fuel 3 BAR System. Pre 2004 Models 36-39 38-42 40-45 40

06-01-2013, 11:59 AM
I'm so lost it ain't even funny! I have checked voltage , checked to make sure lines are clear. What controls the psi?

06-01-2013, 12:09 PM
I tryed to post a pic of boat and fuel psi reg. lookn at the regulator I don't see how I could control the psi . Got a new one from napa and it had no plug in bottom of it like the one off the boat. All the automotive guys say that's where the return line would hook and regulate the psi. But since mine has no return and is plugged off it does nothing. Still lost lol

Engine Nut
06-01-2013, 02:32 PM
I believe on that returnless system, the fuel pressure is actually regulated at the fuel pump in the tank.

06-02-2013, 01:18 PM
Found this info as well.