It took me a little bit to get back to updating my thread, but I'm very happy to report that after BRP dealership replaced that old tank with the crack in the filler neck tube--this thing runs great. Great end to this season. Hopefully the weather holds up for a few more runs!
In regard to the old cracked tank...I really think there must have been something going on where sometimes the crack in the tank was really lined up and not allowing in much air (no symptoms)...and then after some time hitting waves or warming up the engine, somehow that tank flexed enough to let air in. When the ski was working...it worked fine. But when it wasn't working well, the best way I can describe it is like if you try to drink a beverage through a straw with a hole in it. It seems like you have to try so hard just to drink. And it was similar with the fuel delivery and working the throttle, and feeling like engine could get enough fuel.
Anyway...now all of that problem is gone. I ran it for a solid hour+ and took it through plenty of turns, waves, etc, and it had really good performance.
One question i still have, is does anyone know what the normal RPM Max limit is (not the rev limiter), but what is the top number that should be referenced when the engine is under load and at full throttle?
I added a tiny tachometer to mine to set the idle speed...so now that it's running well at all speed ranges, I was wondering if 6030 as a top RPM is normal or not? (as a reminder, this is a white motor 5817 GTS). 6030 was my max RPM on really smooth water. I tried to look this up myself in the manual...but the only note I can find is around the rev limiter. And there is also a note around setting timing that says to bring RPMs up to 6000. But is 6000 the top end that should be expected under load in the water? Or something else? Appreciate any help!
