Throttle snap in neutral = bike dies... every time
Posted June 01, 2003 - 10:53 AM
Posted June 01, 2003 - 05:38 PM
Posted June 01, 2003 - 06:07 PM
Posted June 01, 2003 - 06:30 PM
Posted June 02, 2003 - 05:46 AM
the other thing is that my MJ would still be rich at 4,500ft and it could come down below my 150MJ or so i shouldn't bet-especially on the new 450's.
my bike had what you americans would describe as a canook pipe on it. noisier than your's but about as restricted as a WB pipe at it's quietest. so the 150MJ i ran would be about right for an open pipe at 4,500ft.
smidgen of APJ
same starter jet as mine-probably. but because i can't remember a single reply once, ever to the request "what does it do on choke" i can't tell you!
Posted June 02, 2003 - 06:14 AM
Does ANYONE'S bike actually snap to life instead of die when snapping the throttle in neutral? I've messed with the fuel screw and the acc. pump screw a lot with no improvement whatsoever.
Why do you care how the bike behaves in neutral? This does not mimic any riding situation I can think of.
Posted June 02, 2003 - 02:13 PM
Posted June 02, 2003 - 02:22 PM
So to answer your question: yes, this has everything to do with RIDING, not just messing around while stopped. When riding in a high gear around idle rpm, grabbing a handful of throttle does the same thing as the kill button for a couple of seconds.
Posted June 02, 2003 - 02:50 PM
Get the PAS from sudco or whoever, and some pilot jets and experiment. When you get the PJ/PAS/needle right you won't belive how low you can lug it.
Posted June 02, 2003 - 05:25 PM
When riding in a high gear around idle rpm, grabbing a handful of throttle does the same thing as the kill button for a couple of seconds.
At your altitude I'm sure you are too rich. Your problem with idle to 1/4 throttle, for example, is going to be the pilot/idle/needle straight.
If it were me, I would be one size leaner on the pilot, main, clip and needle straight (almost) before I ever rode it. Unless you are at pretty cool temps I'm sure you are too rich.
Here is the needle I would try first, Yamaha PN:
Or maybe this one, a bit leaner still off the pilot:
Take this w/ a grain of salt, because I don't own a 450. But I'm sure you will like any change on any jet that is in the direction of leaner. Try a 40 pilot (assuming a 42 is stock) and reset the idle mix first. That is probably 80% of your problem.
Hope this helps.