Originally Posted by
secondsupra2004
What year/make boat? Carb, TBI or MPI engine? Indmar or PCM?
First guess would be fuel related. If its not sputtering or backfiring I wouldn't think ignition. Not sure what's going on with your oil pressure. You could buy an inexpensive pressure gauge and screw it right in where the sending unit goes to see if it duplicates what your dash gauge shows.
This is what all I've done with zero change...
New Plugs...Wires...Distributor...Rotor..Fuel Pump...Filter...Air Filter...Still doing the same ...I keep reading and now seeing possibly throttle position sensor...possibly ICM or ECM.... The boat runs like showroom floor up to 4000rpms....If I can't figure it out I'm gonna run it to end of season and then have it plugged up...but I thought for sure what I've done would have some sort of impact....kinda why I'm thinking and reading more along the lines of a sensor or electronic part.....
And it's 325 Indmar Assault EFI...
Before you embark on a journey of revenge....dig 2 graves...
Confucius