Oldfeller--FSO
Serious Thumper ModSquad
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Hobby is now "concentrated neuropany"
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Fayetteville, NC
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Float assemblies tend to stick when they get to the absolute ends of their travel.
Vac petcock illness can fuel starve a bike and the float assembly goes down to the low end of its travel and it can stick in the open position.
Supply gas again with the float stuck open and you can get the gross flooding symptoms mentioned above.
Heck, I had mine stick the other way, in the closed position too.
Same fix in either condition -- whack the bowl 2-3 times with a screwdriver handle and jar the float assembly so it starts moving again and things will tend to even out in the center 'NORMAL FLOAT TRAVEL" position provided you finally have a petcock that always provides gas in quantity when expected.
"Floats getting stuck" goes hand in hand with the float level irregularities of a sick vac petcock showing its stiffness of diaphragm gas starvation arse -- you don't even have to go to the extreme of splitting the vac petcock diaphragm to get some serious flooding.
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And yes, I/we think vac petcock irregularities happen to get involved in a lot of "different stuff" -- sad thing is when the Raptors go in the shite stops happening.
(so far anyway Raptors have proven out to be a fix).
Eventually whatever it is won't stop and I'll be wrong and then you can say a hearty
"Aha !! I done told ya so !!"
Odds are it will happen, but right now I'd have to screw up a whole lot of times to equal out the times I've already been right.
Most controversial item that I think that has been done by the vac petcock is damaging engines due to minor galling of the pistons due to lean/overheating and/or lube film dilution -- but we got at least one clean confirmation on that theory now just recently. We are still waiting for somebody to offer evidence of sudden onset oil consumption, but logically that is just a mild case of the partial seizure that has already been confirmed.
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<Vent tubes are connected to the bowl right?
So at anything less then WOT, gas flow into the bowl exceeds gas used and fills up the bowl then out the vent tubes.>
Let's just say a float sticks in the full down position due to gas starvation emptying out the bowl completely.
(starvation happens, we know the bikes die and give trouble starting back up cause the bowl is EMPTY)
Stuck open float flooding that would be massive enough to fill up the bowl and to go up an additional vertical 3-4 inches worth of vent tubes would also be gushing out of the main jet around the slide needle clearance (and the pilot jet and any other passage between bowl and venturi areas) and mebbe this flow of loose gas could be running down the intake rubber to the head and getting past a cracked open intake valve to the top of the piston and going around and down past the ring gaps and down the cylinder walls into the sump, washing off oil film as it goes ....
(and that's if the engine isn't running, if it IS running and sucking in masses of air to pick all that gas up into overwet torrents of mist and then sucking it all directly into the cylinder, well it gets there quicker and it isn't all going to burn because there isn't enough air to burn it all so the walls get washed down with gas droplets that again dribble down and wind up in the sump ......)
Now let's throw this into "everything all running at once" motion with the vac petcock partially starving things while the float is stuck open trying to flood things -- wow, I think it could get downright confusing ....
Throw in a split in the diaphragm if you really really really think you need to.
.... you already can't sort out which from what and "why" is already floatin' and a bobbin' in the bilges right next to the sorry rascal bad vac petcork which started the whole durn thing to spinning ....
So far Raptors make the bad stuff stop
and so far Raptors haven't been seen to put any gas into any sumps
not yet anyway
(perhaps because floats are staying in the normal zone in the middle rather than going to the ends of travel all the time)
But we are all looking for it, you me Routy Verslagen and Serobot and everybody else ....
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