I believe it's a diaphragm type pump, which would require huge suction from the float bowl (which does not happen) to pull through.
Side note: SKWEARpeg, did you change your float valve and seat?
Yes, but I used the Suzi valve instead of the 3.0 Yammie valve for the Grizzly. I plan on an upgrade, and I still haven't checked the float level via the yammie approved method. I just set it by the Odo method.
Riding two up, and hitting the rev
limiter in first, and then second, and I can make her stumble in second. Under normal 'not trying to break something' conditions, I have no problems right now.
I figure the float level may be a tad low yet, or the 2.5 suzi is on the low flow side.