Quote:
Originally Posted by bigshrimpin
MJ - I think it's bogging cause it's not getting the fuel it needs at higher RPM (above 4500). Whether it's the fuel pump, carbs, or some restriction b/w the tank or motor . . . We'll have plenty of time to go through the entire system this winter and replace/rebuild everything. Those motors run HOT at lower speeds, you can add a H20 pressure gauge and a temp gauge to ease you mind. I run snipped tstats during the warm months, so the motor runs colder and pees right away . . . but you can flood the motor when starting (as I showed you almost everytime we went out) Hopefully Spares or Ferm will come along and chime in here.
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I vote for the restriction between tank and carb....along with a different winter gasoline formulation. The anti-siphon valve takes a couple ounces of pressure to open the spring.....The butane added in the fall up north, and the south in November causes vapor lock if you happen to have a anti-siphon valve with a slightly stiff spring. I've been there and got the T-shirt....boat would bog down past 4000 rpm and stall if you didn't quickly pull the throttle back. Figuring that one out wasn't cheap or quick.