I will call the mechanic today and have the gauges installed. Thank you for your thoughts, you have been most gracious with your time and expertise. I will let you know what we find.
I just noticed why there was confusion as to the actual engines in the boat. Sorry, my mistake in incorrectly referring to the engines as 5.7 in my original posting. The engines, per the three manuals I received when I bought the boat in November of 1998, are the Model MP454 XLi, serial numbers...
Gentlemen, Thank you both, and your suggestions are excellent and VERY much appreciated. I had not thought of a fuel vacuum, as both tank vents are clear and I have recently mounted clamshells over the vents to ensure water was not suddenly getting into the tanks after all of these years. I will...
I have at 1999 Silverton 392 Motor Yacht with Crusader 5.7 MPI (454 TBI) engines. I have owned the boat since it was new, have always been meticulous with regular maintenance, and these Crusader 5.7 MPI engines have provided excellent service for twenty years.
In the fall of 2019, the engines...