Fuel range went from over 200 miles per tank to about 150

[Iroquois]

I nearly always ride on Prime, which pulls from the reserve spout, right?  On and Reserve on my petcock are junk.  Well, I don't know about Reserve, I don't really use it.  But the On position, guaranteed if I wring the throttle out onto the highway, it'll start stumbling eventually.  I'd really just like to replace the whole fuel line assembly with something much simpler.  I'd be cool with just an on/off valve.  Not really sure how I should go about doing that yet, though.

Sorry Charlie, it's designed like that for a reason. If you have it in the "On" position and it stumbles on the highway, there is probably something else going on that you dont realize. The petcock runs off of a vacuum, so if you always have it on "prime", fuel is always flowing into the carbs (I think). How have you not flooded your engine yet?

[Anaconda]

How about while overtaking a truck?

Half way along the bike just died. I knew I was close but... quickly switched and all was well. 

Of course, the first time on the GS I hit reserve I went to reach for where it was on my previous bike. Not being able to find it in the blind like this I was forced to pull over. That was on the highway.

Michael

cool, because I ride on freeways/bridges quite often and I would really not like to have to do that, as it usually takes about 15 seconds for it the fuel to kick in from reserve.  Luckily that has only happened to me on street roads, so I just park it on the curb and wait

[Toledo Jim]

How about while overtaking a truck?

Half way along the bike just died. I knew I was close but... quickly switched and all was well. 

Of course, the first time on the GS I hit reserve I went to reach for where it was on my previous bike. Not being able to find it in the blind like this I was forced to pull over. That was on the highway.

Michael

cool, because I ride on freeways/bridges quite often and I would really not like to have to do that, as it usually takes about 15 seconds for it the fuel to kick in from reserve.  Luckily that has only happened to me on street roads, so I just park it on the curb and wait

At highway speeds and rpms with it in gear, the switch to reserve should appear to happen almost immediately. (The fuel lines aren't all THAT long.) At least it does for me.... 

[dchrist]

FWIW I have an 01 jetted for performance exhaust and I hit res at between 130 and 150 depending on how I've ridden that tank. I ride on pri on the highway or if I'll be wringing it out cause if I'm at wot and going up hill its going to fuel starve every time with the on position. sometimes I remember to turn it back to on sometimes i don't. it only flooded once but that was after I had to trailer it for a few miles this spring. if your float valves are in good shape flooding shouldn't be an issue.