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Old 02-29-2012, 10:55 AM   #5
Road_Clam
Senior Member
 
Join Date: Feb 2012
Location: sounthern NH
Posts: 146
Re: Bike stalls at 50 MPH

Quote:
Originally Posted by 7653
I use my bike to commute in a big city and usually stay off freeways. The highest speed I will go is usually 40MPH. However, today I decided to take it on a short ride through the interstate going through my city. After riding my bike for several minutes at 50MPH it stalled in the middle of my ride. I eventually fired up my bike again but after about ten minutes of riding it stalled again at around 35MPH. The engine just went silent. Headlights and everything else were still functional.

What is the issue? How can I fix it?

I looked up several related forum topics:
-2003 gz250 stalls at highway speeds
viewtopic.php?f=3&t=3484

-higher speed "stall"
viewtopic.php?f=7&t=2480

Thank you!
Sounds like a fuel starvation issue. Try to replicate the running condition (you don't have to be traveling 60 mph on the highway. Find a long less traveled backroad, shift the bike up to 3rd and just hold the throttle about 3/4 and let the engine rpms rev high, you should encounter the same issue. Try to establish a pattern of exactly how the engine dies, do you feel a slight hesitation or bucking ? Does it feel like you just shut the key off ? There are quite a few possibilities and we need more details.
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1984 GPz1100
1987 GSX-R 750
2006 HD Fatboy
2001 KX500
2007 YZ450F
2001 GZ250 (Wife's !)



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