Always replace the plugs when there is any doubt and maybe even if there
isn't. Did the fuel filter get replaced? It sounds like a fuel problem
to me. I'm not a bike mechanic though.
Larry Steimel KD0DG
Saint Louis, Missouri
1996 Yamaha Virago 1100
kd0dg@xxxxxxxxxxxxx
-----Original Message-----
From: owner-virago@xxxxxxxxxxxx [mailto:owner-virago@xxxxxxxxxxxx] On
Behalf Of Doug Simmons
Sent: Wednesday, August 27, 2003 9:52 AM
To: virago@xxxxxxxxxxxx
Subject: requesting help diagnosing a misfiring (?) bike
Hi. I spent some time searching the archives. I got a few ideas, but
nothing exactly matching my bike's symptoms, so I wanted to see if
anyone with a more similiar experience could help me. FYI: My 75k mile
XV500K has had a recent carb service (clean and synch) and regular
general maintenance (fluid changes, valve adjustments, etc) at a dealer.
Good clean air filter, plugs are both a healthy grey when I clean them.
The bike starts very reliably.
There is one consistent problem and two intermittent ones:
The consistent problem is that I can't get full throttle. The bike
starts to cough and I have to back off. This seems independent of how
hot the bike is.
The intermittent problems are when the bike has run long enough to get
good and hot, there are two minor problems that arise: 1. Very
intermittently (2 or 3 times in twenty miles): while cruising on the
highway, the bike will skip a beat, almost like it is starting to run
out of fuel (which it isn't), or like the coils forgot to fire, or
something cut off its air, seemingly for just one revolution. Its very
quick when it happens. 2. When I go from cruising to stopping at a
light, I have to stay on the throttle in small, brief increments to keep
the idle from dipping down low enough to die.
So far the things I have come across that seem worth looking at are: 1.
Carb overflow tubes plugged? 2. plug replacement 3. coil check
Is there anything else that is just screaming to someone out there for
me to check? I'm going to take any suggestions and go over the bike with
a fine-toothed comb this weekend.
Thanks in advance for any tips provided,
Doug Simmons
Microcomputer Support Specialist II
Instructional Support Services
Morris Library
Southern Illinois University Carbondale
________________________________________________________________________
___
(un)subscribe info, archive: http://archives.itg.uiuc.edu/virago/
___________________________________________________________________________
(un)subscribe info, archive: http://archives.itg.uiuc.edu/virago/
